Question 6
1) [tex]\overline{AB} \cong \overline{BD}[/tex], [tex]\overline{CD} \perp \overline{BD}[/tex], O is the midpoint of [tex]\overline{BD}[/tex], [tex]\overline{AB} \cong \overline{CD}[/tex] (given)
2) [tex]\angle ABO, \angle ODC[/tex] are right angles (perpendicular lines form right angles)
3) [tex]\triangle ABO, \triangle CDO[/tex] are right triangles (a triangle with a right angle is a right triangle)
4) [tex]\overline{BO} \cong \overline{OD}[/tex] (a midpoint splits a segment into two congruent parts)
5) [tex]\triangle ABO \cong \triangle CDO[/tex] (LL)
Question 7
1) [tex]\angle ADC, \angle BDC[/tex] are right angles), [tex]\overline{AD} \cong \overline{BD}[/tex]
2) [tex]\overline{CD} \cong \overline{CD}[/tex] (reflexive property)
3) [tex]\triangle CDA, \triangle CDB[/tex] are right triangles (a triangle with a right angle is a right triangle)
4) [tex]\triangle ADC \cong \triangle BDC[/tex] (LL)
5) [tex]\overline{AC} \cong \overline{BC}[/tex] (CPCTC)
Question 8
1) [tex]\overline{CD} \perp \overline{AB}[/tex], point D bisects [tex]\overline{AB}[/tex] (given)
2) [tex]\angle CDA, \angle CDB[/tex] are right angles (perpendicular lines form right angles)
3) [tex]\triangle CDA, \triangle CDB[/tex] are right triangles (a triangle with a right angle is a right triangle)
4) [tex]\overline{AD} \cong \overline{DB}[/tex] (definition of a bisector)
5) [tex]\overline{CD} \cong \overline{CD}[/tex] (reflexive property)
6) [tex]\triangle ADC \cong \triangle BDC[/tex] (LL)
7) [tex]\angle ACD \cong \angle BCD[/tex] (CPCTC)
Factorise x^2-4x-32 please
Answer:
(x - 8) (x + 4)
Step-by-step explanation:
x^2-4x-32
Consider the form x^2+bx+c. Find a pair of integers whose product is c
and whose sum is b. In this case, whose product is −32 and whose sum is −4.
-8,4
Write the factored form using these integers and we get the answer
(x - 8) (x + 4)
Care dintre urmatoarele numar este prim 91,29,85,39
Answer:
29,
Step-by-step explanation:
1
6
m25=
5
3
If 41 42 = 23, 24 = 25, and m 24 = m23 +10°, What is m/45?
D
4
PLEASE HELP MEEE!! ASAPP!!!
The value of m∠5 = m∠4 + 10° or m∠3 + 20°.
How to calculate exterior angle of polygon?The exterior angle of a polygon is the angle formed by one side of the polygon and the extension of the adjacent side. The measure of each exterior angle of a polygon is equal to the sum of the interior angles of the polygon divided by the number of sides of the polygon.
To calculate the exterior angle of a polygon, use the following formula:Exterior angle = (Sum of interior angles of the polygon) / (Number of sides of the polygon)For example, if a polygon has 6 sides, the sum of its interior angles is equal to (6 − 2) × 180° = 720°. Therefore, the exterior angle of the polygon is 720° / 6 = 120°.Knowing how to calculate the exterior angle of a polygon is helpful in solving problems related to geometry and trigonometry. It is also important in understanding the properties of polygons and their characteristics.Solution:
The given value of m∠4 = m∠3+ 10°
The value of m∠5 is increase in 10° of m∠4
The answer is m∠5 = m∠4 + 10°.
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For what value of x does 4* =
-(1)***
8
O -15
O-3
03
O 15
?
For the function 4^x=(1/8)^(x+5), the value of x, using exponents' properties is obtained as option 2: x = -3.
What is an exponent?
The way of representing huge numbers in terms of powers is known as an exponent. Exponent, then, is the number of times a number has been multiplied by itself.
The given function is - 4^x=(1/8)^(x+5)
This function can be solved using the properties of exponents.
The first property of exponents is - (a^m)^n = a^(m·n)
The second property of exponents is - 1/(a^n) = a^-n
Simplify the left hand side of the function -
4^x = (2²)^x
Using the first property of exponents -
(2²)^x = 2^(2x)
Simplify the right hand side of the function -
(1/8)^(x+5) = (1/2^3)^(x+5)
Using the second property of exponents -
(1/2^3)^(x+5) = (2^-3)^(x+5)
Using the first property of exponents -
(2^-3)^(x+5) = 2^(-3x - 15)
The function then becomes -
2^(2x) = 2^(-3x - 15)
Since, the base is same they cancel out.
2x = -3x - 15
2x + 3x = -15
5x = -15
x = -3
Therefore, the value of x is obtained as x = -3.
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7/6 u = 42
how do i solve u
Answer:
36
Step-by-step explanation:
7/6 u=42
7u =42×6
u=252/7
u=36
Hikers are traveling at 3.5 miles per hour. They leave camp and hike N72°W for 2 hours. They change course to S23°W for 4 hours. How many miles is the trip directly back to camp? What bearing should the hikers take to head back to camp?
Answer: To solve this problem, we can use the law of cosines. The law of cosines is a useful tool for solving problems involving distances and angles between points in two-dimensional space. We can use the law of cosines to find the distance between the starting and ending point of the hike, and the bearing to get back to camp.
The law of cosines states that:
c^2 = a^2 + b^2 - 2ab * cos C
where c is the distance between the two points, a and b are the distances of the two legs of the hike, and C is the angle between them.
Using the given information, we can set a as the distance traveled at 3.5 miles per hour for 2 hours, which is 3.5 * 2 = 7 miles,
b as the distance traveled at 3.5 miles per hour for 4 hours which is 3.5 * 4 = 14 miles,
C as the angle between the two legs of the hike which is (72 + 23) = 95 degrees.
Now we can substitute this values into the law of cosines formula:
c^2 = 7^2 + 14^2 - 2(7)(14) * cos 95
Solving this equation will give us the square of the distance between the starting and ending point of the hike. To find the actual distance, we'll have to take the square root of that.
The distance directly back to camp is √(196 - 98*(√2/2)) = √(196 - 98*(√2/2)) ≈ 8.14 miles
To find the bearing to head back to camp, we must know that the bearing of a line is defined as the angle between the line and the North direction, measured clockwise.
We can use the bearing of N72°W and S23°W to find the back bearing to camp.
The back bearing is (180 + 72 + 23) = 275 degrees. The hikers should take a bearing of 275 degrees to head back to camp.
Step-by-step explanation:
What is quadratic inequalities Grade 9?
A quadratic inequality is an inequality that can be written in the form of "ax² + bx + c < or > 0" where a, b and c are real numbers and x is a variable.
The solutions to a quadratic inequality are the values of x that make the inequality true. To solve a quadratic inequality, we first set the expression equal to zero and then find the roots (also known as the zeroes or solutions) of the equation. We then use these roots to divide the number line into three regions: the region where the expression is less than zero, the region where the expression is greater than zero, and the region where the expression is equal to zero.
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If a mountain rises 25.0 centimeters (cm) in 125 years:
The rate of uplift is
cm/yr
Answer: 0.2 cm/yr
Step-by-step explanation:
simply divide centimeters by years
25.0 cm ÷ 125 yr
0.2 cm/yr ... answer
The rate of uplift is 0.2 cm/yr
hope that helps...
Pls help with this rounding
Answer:
0.36
0.0068
0.043
0.00048
Step-by-step explanation:
trust me bro
PLEASE HELP IM DESPERATE
[tex]\frac{sqrt{5} }{3}[/tex]
Step-by-step explanation:
Its root 5 over 3
Answer:
cos (90 - m)° = 2/3--------------------------------------
If m° is one of the angles of a right triangle, the complementary angle is (90 - m)°.
We know that sine of the angle is same as the cosine of the complementary angle. It means:
sine m° = cos (90 - m)°Therefore the value of cos (90 - m)° is 2/3.
y = 5x + 22
y - 4 = 10x
please help need a solution
Answer:
x=18/5, y=40. (18/5, 40).
Step-by-step explanation:
y=5x+22
y-4=10x
---------------
y=10x+4
10x+4=5x+22
10x-5x=22-4
5x=18
x=18/5
y-4=10(18/5)
y-4=36
y=36+4
y=40
When 12 is subtracted from a number, the result is 5. What is the number?
When 12 is subtracted from a number, the result is 5. What is the number?
Answer:
? - 12 = 5
? = 17
Step-by-step explanation:
You can just do:
12 + 5
= 17
Now you can see that it fits:
17 - 12 = 5
You're welcome
Each image shows a quadrilateral in a plane. The quadrilateral has been dilated using a center above the plane and a scale factor between 0 and 1.
Match the dilation with the scale factor used.
Match the image with the letter it belongs with.
image 1
Image 2
Image 3
A) 1/2
B) 3/4
C) 1/4
In this quadrilateral, Dilation A will have largest scale factor. Dilation B is smallest and will have smallest scale factor. Now for the given scale factors: 3/4 > 1/2 > 1/4
what is quadrilateral?A quadrilateral is a four-sided polygon in geometry that has four edges and four corners. The word is a derivative of the Latin words quadri and latus (meaning "side"). Having four sides, four vertices, and four corners, a rectangle is a two-dimensional form. Concave and convex come in primarily two varieties. Additionally, there are several subclasses of convex quadrilaterals, including trapezoids, parallelograms, rectangles, rhombuses, and squares. Four straight sides make up a rectangle, which is a two-dimensional form. There are several different types of quadrilaterals, including parallelograms, trapezoids, rectangles, kites, squares, and rhombuses.
here,
in this quadrilateral
Dilation A will have largest scale factor.
Dilation B is smallest and will have smallest scale factor.
Now for the given scale factors:
3/4 > 1/2 > 1/4
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im really confused pls help
Janelis makes bandanas to sell an clothing stores Janelis needs 0.5 yards of fabric to make a bandara if the forces $1.20 per bot what is the total cost of one bandana?
The total cost of one bandana is $0.60.
What is the total cost of one bandana?The theory used in this question is the multiplication principle, which states that when multiplying a number by a factor, the product will be equal to the number multiplied by the factor. In this case, the number is 0.5 yards of fabric, and the factor is 2, so the product is $1.20.
Step 1: Calculate the cost of 0.5 yards of fabric.
Step 2: Multiply the cost of 0.5 yards of fabric by 2, since you need 0.5 yards of fabric to make a banana.
Step 3: The total cost of one bandana is the cost of 0.5 yards of fabric multiplied by 2, which is $1.20.
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Zachary wants to get a new video game. He is saving $2.50 each week from his allowance. He has also saved $20 that he got as a gift. Write an equation that shows the relationship between the number of weeks Zachary has been saving, x, and the total amount he has saved, y.
Answer:
y=2.50(x)+20
Step-by-step explanation:
Answer:
y=2.50x+20
Step-by-step explanation:
dont forget the x
How many roots exist for polynomial function?
The Fundamental Theorem of Algebra asserts that this 2 n d degree polynomial must have precisely two roots.
What is algebra?According to the Fundamental Theorem of Algebra, this 2 n d degree polynomial must have precisely two roots. Algebra is the branch of mathematics that aids in the representation of problems or situations using mathematical expressions. In algebra, we utilize integers with definite or fixed values such as 2, 7, 0.068, and so on. In algebra, we employ variables such as x, y, and z in addition to integers. Elementary algebra, advanced algebra, abstract algebra, linear algebra, and commutative algebra are all sub-branches of algebra. In algebra, an algebraic expression is composed of integer constants, variables, and the basic arithmetic operations of addition(+), subtraction(-), multiplication(), and division(/). 5x + 6 is an example of an algebraic expression.
Here,
According to the Fundamental Theorem of Algebra, this 2 n d degree polynomial must have precisely two roots.
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A pizza parlor has a choice of 10 toppings for its pizzas. From these 10 toppings, how many
different 8-topping pizzas are possible?
I
On solving the provided question, we can say that by permutation, 90 different 8-topping pizzas are possible
what is permutation?The permutation of a set in mathematics is essentially the rearranging of its elements if the set is already ordered, or the arrangement of its members in a linear or sequential order. The act of altering the linear order of an ordered set is referred to as a "permutation" in this context. The mathematical calculation of the number of possible arrangements for a given set is known as permutation. Permutation, in its simplest form, refers to the variety of possible arrangements or orders. The placement of the elements matters with permutations. The placement of items in a specific order is known as a permutation. Here, the set's components are sorted in either chronological order or linear order.
here,
by permutation
[tex]^{10}P_8[/tex] = 10!/2/1 = 10 X 9 / 1 = 90 ways
90 different 8-topping pizzas are possible
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An object is launched into the air at 60 feet per second from a platform 80 feet high given by the equation f(t) = -16t2+60t+80.
What is the maximum height?
Answer:
Below
Step-by-step explanation:
For the Quadratic Equation - 16t^2+ 60t + 80
the max value will occur at t = - b/2a = -60 / (2 * -16) = 1.875 s
use this value f t in the equation to find max height = 136.25 ft
The table represents a function. X y 0 6 2 8 4 10 6 12 complete the statement by selecting from the drop-down menu. The rate of change in the function y = x + 4 is choose. The rate of change of the function represented in the table.
The table represents a function. X y 0 6 2 8 4 10 6 12 complete the statement by selecting from the drop-down menu. The rate of change in the function y = x + 4 is equal to the rate of change of the function represented in the table.
Consider the function shown in the table.
The table's coordinates are as follows:
(0,6) (2,8) (4,10) and (6,12) (6,12)
Take into account the first two coordinates (0, 6) and (2,8)
x₁=0, y₁=6, x₂=2, y₂=8
Linear equation is provided by (y-y₁) =m(x-x₁)
Where 'm' is the slope (rate of change), the following formula is used:
m = y₂ - y₁
x₂ - x₁
So,
m = 8 - 6 = 1
2 - 0
So, the line's equation is:
(y-6)= 1 (x-0) (x-0)
y-6=x
y=x+6
Putting it up against the common equation of the line y=mx+c with slope "m."
Thus, m(Rate of Change)=1 is obtained.
Now,
We will calculate the slope for the function y=x+4
Putting it up against the common equation of the line y=mx+c with slope "m."
Thus, m(Rate of Change)=1 is obtained.
The rate of change in the function y=x+4 is therefore equal to the rate of change of the function shown in the table.
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please help me with this
Answer: 185 minutes
c is the correct option
Step-by-step explanation:
let x = number of minutes
0.46x = 85.10
x = 85.10/0.46 = 185 minutes
Answer:
185 minutes
Step-by-step explanation:
See the attached worksheet. Note that there are no inequalites mentued in the problem. That eliminates options 1 and 4. Option 2 is set up correctly, except that the units are incorrect. The unit for 0.46 is $/min, not just $. The final unit should be minutes, not $.
Option 3 has the correct equation, and units. Note how the word problem can be translated to an equation. Start with setting up an equation, before mentally trying to answer the question. An guess at the answer might be helpful, but work with the equation to insure the details are included. A correct equation will allow proper unit cancellation, which will help verify that the answer is correct. In this case we wanted an answer with just minutes. Dividing $ by $/min reduces to only minutes ($/$/min = min).
========
Making an estimate first is a good safeguard against mistakes. We can mentally round up $0.46 to 50 cents/minute. If the total bill is almost $90, we'd expect an answer around 180 minutes ((90/0.5). We got 185, so we can feel comfortable that the problem was done correctly and quickly move on.
Alicia paid $1.32 for a bag of pinto beans. The beans cost $.55 per lb. How much did the bag of pinto beans weigh?
The weight of the bag of pinto beans she bought is; 2.4 lbs
How to solve Algebra Word problems?Algebraic word problems are defined as questions that require translating sentences to equations, after which we then solve those equations.
Now, we are told that;
Amount paid by Alicia for a bag of pinto = $1.32
Cost of beans = $0.55 per lb
Now, the weight of the bag of pinto beans that Alicia bought will be;
Weight = Amount paid/cost per lb
Weight = 1.32/0.55
Weight = 2.4 lbs
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-Ready
counters
Practice: Division Word Problems with Remainders-Quiz - Level D
Moses volunteers at an animal shelter with 4 dogs. He has 14 dog treats.
He gives each dog the same number of treats, and he gives as many treats as
he can. How many treats does Moses give each dog? How many treats are left?
X
Using the division method it is obtained that Moses is left with 2 dog treats after feeding the 4 dogs with 3 dog treats each.
What is division?
One of the four fundamental mathematical operations—the others being addition, subtraction, and multiplication—is division. Division is the process of dividing a larger group into smaller groups so that each group contains an equal number of things.
Number of dogs Moses volunteers with, x = 4
Number of dog treats Moses have, y = 14
Number of dog treats Moses gives to each dog = a
So, to find the value for a use the division method -
a = y/x
a = 14/4
a = 3(2/4)
Where, 3 is the quotient and 2 is the remainder.
Therefore, Moses gives each dog 3 treat and have 2 treats left.
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Use the drop-down menus to compare −5.25 and −6.
A number line. Points are plotted at negative 5 and 25 hundredths and at negative 6.
CLEAR CHECK
−5.25
−6 because −5.25 is ...
−6 on the number line.
−5.25 > −6.
There are two of them.
These two numbers need to be compared.
A number's square root is always less than?A number's square root is never greater than the number itself.
According to the question, we have -
A = −5.25
B = −6.
Clearly, A > B
Hence,−5.25 > −6.
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Select the action you would use to solve x - 3 = 12. Then select the property
that justifies that action.
Select all that apply.
A. Action: Add 3 to both sides.
OB. Action: Multiply both sides by 3.
C. Action: Subtract 3 from both sides.
D. Property: Addition property of equality
E. Property: Multiplication property of equality
F. Property: Subtraction property of equality
To solve the equation add 3 to both sides using addition property of equality.
What is expression?In mathematics, an expression or mathematical expression is a finite combination of symbols that is well-formed according to rules that depend on the context.
Mathematical symbols can designate numbers (constants), variables, operations, functions, brackets, punctuation, and grouping to help determine order of operations and other aspects of logical syntax.
Given is the equation as -
x - 3 = 12
You should follow the given steps -
Action : Add 3 to both sides.
Property : Addition property of equality
Therefore, to solve the equation add 3 to both sides using addition property of equality.
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QUICK HELP ME LOL!!!!!
On solving the provided question, we can say option a) 5x+4 is the simplified form of the equation.
What is equation?Equations in mathematics are logical statements with two algebraic expressions on either side of the equals (=) symbol. The equality of the expressions on the left and right in relation to one another is shown. LHS = RHS (left hand side = right hand side) is the first step in any mathematical equation. You can solve equations to determine a variable's or quantity's value. It is not an equation if the statement lacks the "equal to" sign. It will be thought of as a phrase. Later on in this essay, there will be an explanation of the distinctions between an expression and an equation.
Given:
=>(−3x − 12) + (16 + 8x)
=> -3x-12+16+8x
=> 5x+4
So 5x+4 is the simplified form of the equation
Therefore option a) 5x+4 is the simplified form of the equation
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What is the solution to this system of equations 2x y 40 x − 2y − 20?
The system of equations 2x + y = 40 and x - 2y = -20 has a solution of x = 12 and y = 16. We can solve this system by using the method of substitution or elimination.
One way to solve the system is to use the method of substitution. We can first solve one of the equations for one of the variables and substitute that expression into the other equation.
For example, we can solve the first equation for y by isolating y on one side: y = 40 - 2x. Then we can substitute that expression into the second equation and solve for x:
x - 2(40 - 2x) = -20
x - 80 + 4x = -20
5x = 60
x = 12
Then we can substitute x = 12 into the first equation, or either equation to find the value of y:
2(12) + y = 40
y = 16
So the solution to the system of equations is x = 12 and y = 16.
Another way to solve the system of equations is to use the method of elimination. This involves adding or subtracting the equations to eliminate one of the variables. For example, we can add the equations and get:
3x - y = 20
Then we can solve for x or y and substitute it back into either of the equation to find the other variable.
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The complete question is:
What is the solution to this system of equations 2x + y = 40 and x - 2y = -20?
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If m = −7/2 is slope, y - intercept is 12 and the point ( x, 5 ) lies on the line. What is the value of x ?
5=-7/2x+12
-7=-7/2x
x=2
Jenny ha 50 quare tile he arrange the tile into a rectangular array of four row how many tile will be left over
Two tiles will be left over. Jenny will have two square tiles left over after arranging her tiles into a rectangular array of four rows.
50 quare tiles divided by 4 rows = 12.5 quare tiles
12.5 quare tiles per row x 4 rows = 50 quare tiles
50 quare tiles used - 50 quare tiles = 0 quare tiles
Remaining tiles = 0 quare tiles
50 quare tiles - 0 quare tiles = 50 quare tiles
Left over tiles = 2 quare tiles
Jenny has 50 square tiles which she arranges into a rectangular array of four rows. To work out how many square tiles are left over, first divide 50 by 4. This gives us 12.5 tiles per row, however this is not possible so we need to round this number down to 12. Multiplying 12 by 4 gives us 48 tiles used in the rectangular array. Subtracting the 48 tiles used from the 50 tiles that Jenny had originally gives us a result of 2 square tiles left over. In conclusion, Jenny will have two square tiles left over after arranging her tiles into a rectangular array of four rows.
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bryan is starting a tutoring company that charges 10 as an initial fee and 7.50 dollars per hour of tutoring. Laura is starting her own company and she wants to charge less for the initial fee, but more per hour. which equation could represent her charges? please explain why you chose this answer. i will mark you brainliest
The function that could represent Laura's charges is given by -
y = 5x + 12
What is expression?In mathematics, an expression or mathematical expression is a finite combination of symbols that is well-formed according to rules that depend on the context.Mathematical symbols can designate numbers (constants), variables, operations, functions, brackets, punctuation, and grouping to help determine order of operations and other aspects of logical syntax.Given is that bryan is starting a tutoring company that charges $10 as an initial fee and 7.50 dollars per hour of tutoring. Laura is starting her own company and she wants to charge less for the initial fee, but more per hour.
The function representing the amount charged by Brayan is -
{B} = 10 + 7.5x
Amount charged by Bryan per hour is -
$7.5
Amount charged by Bryan as an initial fee -
$10
The function which charge less for the initial fee, but more per hour is -
y = 5x + 12
Therefore, the function that could represent the amount charged by Laura is given by -
y = 5x + 12
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Twelve students were asked how long they spent doing homework last week. The scatter plot shows the results of the survey.
Is there an outlier in the data set? If there is an outlier, identify it and explain why it is an outlier.
The scatter plot shows the results of the survey and yes, there is an outlier in the data set which is the lowest time value of grade 11 and it is an outlier because it is an extremely low data point relative to the nearest data point.
What is an Outlier?This is referred to as an extremely high or extremely low data point relative to the nearest data point and the rest of the neighboring co-existing values in a data graph.
The outlier is at the lowest time value if grade 11 and it falls under such category because it is an extremely low data point relative to the nearest data point in the given graph.
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