Find the angle between a diagonal of a cube and one of its faces ?
Answer:
35.26°
Step-by-step explanation:
You have to visualize this or draw a diagram
If a cube has side a, the face diagonal of the cube is √2a . The diagonal of the cube is √3a
One side of length a, another side of length √2a (face diagonal) and the third of √3a form a right triangle with the angle opposite √3a being the 90° angle
Therefore we can find the angle [tex]\theta[/tex] which the cube diagonal makes with the face diagonal using the fact
[tex]\dfrac{a}{\sqrt{2}a} = \tan\theta[/tex]
[tex]\theta = tan^{-1}\left(\dfrac{1}{\sqrt{2}\right)} \\= 35.26^\circ[/tex]
Write and solve the system of equations for each of the following problems. You have to write two equations for each problem PLEASE
1. A plane makes a 600 mile trip in 3 hours flying with the wind, but the return trip against the same wind takes 4 hours.
What is the rate of the plane in still air and the rate of the wind?
2. Two pizzas and four sandwiches cost $62. Four pizzas and 10 sandwiches cost $140. How much does each pizza
and sandwich cost?
Consequently, the airplane's speed in still air 250 mph and Therefore, the wind's speed is 50 mph.
what is equation ?Its simplest form is thought to be the number's smallest equivalent fraction. How to determine the simplest form. Look for shared factors in the denominator and numerator. A fractional number can be checked to discover if it is a prime number. A statement having two spherical geometry and an equal sign in the middle is referred to as a mathematical equation. Every variable's degrees are listed in descending order in the general form of any equation. The formula for a linear equation is x + b = 0.
given
Now solve any problem for one variable. In the first equation, I'll find the value of x:
200mph = p - w
On both sides, add w:
p = 200mph Plus w
Now that we have the x from the first equation, we can use it to solve for w in the second equation:
200 mph + w + w Equals 300 mph
Add related phrases together for 300 mph: 200 mph plus two
200 mph on both sides are subtracted:
100mph = 2w
50 mph divided by two is w.
Therefore, the wind's speed is 50 mph.
To find the plane's speed, enter the value we just discovered back into either equation. I'll enter it into the first equation.
200 mph = (p - 50 mph)
50 mph extra on both sides
250mph = p
Consequently, the airplane's speed in still air 250 mph .
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What is the equation of the graph below?
The solution ax2 + bx + c = 0 can be solved using quadratic equation
x = (-b (b2 - 4ac))/2a to get the roots of the problem.
Quadratic equations: what are they?Just using equations x = ax2 + bx + c = 0 and a 0, a quadratic function is a 2nd polynomial problem in one variable. It is a third polynomial problem, hence the foundational theorem of algebra guarantees that there is least one solution. There may also be real or sophisticated solutions. The quadratic formula makes solving any quadratic equation easier for us. In order to solve this equation, we must first change its form to appear as ax2+bx+c=0, in which a, b, and d are the coefficients. Therefore, we add these coefficients to the method: (-b(b2-4ac))/ (2a).
Here,
The problem ax2 + bx + c = 0 can be solved using
the method x = (-b (b2 - 4ac))/2a to get the roots of the problem.
D = b² - 4ac provides the discriminant value. If D > 0, the equation has two genuine, separate roots.
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Many students choose to take courses in statistics and computer science as elective. Suppose that in a certain university 41% take computer science, 48% take statistics, and 63% take at least one of these two courses. What is the probability a randomly selected student takes both a computer science and a statistics courses as elective? Round your answer to two decimal places.
The probability that a randomly selected student takes both computer science and statistics courses as electives is 0.26
What is probability?Probability is defined as the possibility of an event being equal to the ratio of the number of favorable outcomes and the total number of outcomes.
We can use the formula for the probability of the intersection of two events:
P(A and B) = P(A) + P(B) - P(A or B)
where A and B are the events of taking computer science and statistics courses as electives, respectively.
Given:
P(A) = 0.41 (probability of taking computer science)
P(B) = 0.48 (probability of taking statistics)
P(A or B) = 0.63 (probability of taking at least one of these two courses)
So,
P(A and B) = 0.41 + 0.48 - 0.63 = 0.26
Therefore, the probability is 0.26, rounded to two decimal places.
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Solve this you won't.
The linear equation that is represented in the table is:
y = 3*x + 2
How to write the linear equation?A general linear equation can be written in the form:
y = m*x + b
Where m is the slope and b is the y-intercept.
First, notice that on the table we can see the point (0, 2), then the y-intercept of the linaer function is b = 2
Then we can write:
y = m*x + 2
Now we can use any other point on the table to find the value of the slope m.
Using the second point (1, 5),replacing the values we will get:
5 = m*1 + 2
Solving for m, we will get:
5 = m + 2
5 - 2 = m
3 = m
Then the linear equation is:
y = 3*x + 2
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What shape results from a plane passing through a cone that is perpendicular to the base?
Isosceles Triangle
Circle
Parabola
Ellipse
The shape that results from a plane passing through a cone that is perpendicular to the base is option B: Circle.
What is the Circle about?When a plane passes through a cone perpendicular to the base, it intersects the cone at a circle. This is because the plane is cutting the cone at a 90-degree angle to the base, and so it is cutting through the circular cross-section of the cone.
Therefore, If the plane were to be tilted or angled, the shape of the intersection would be an ellipse, which is a flattened circle. This is because an ellipse is the shape that results when a plane intersects a cone at an angle that is not perpendicular to the base.
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NO LINKS!!!!
1. A savings account starts with $720 and earns an annual rate of 4.8%. Write an equation and find the amount of money in the account for 12 years.
Equation:
Solution
2. Bacteria can multiply at an alarming rate when each bacteria splits into two new cells , thus doubling. If we start with only one bacteria, which can double, how many bacteria will we have be the end of 3 days?
Equation:
Solution:
Answer:
[tex]\textsf{1.\;\;Equation:\quad$A=720(1.048)^{t}$}[/tex]
[tex]\textsf{Solution:\quad$\$1263.77$}[/tex]
[tex]\textsf{2.\;\;Equation:\quad$y=2^x$}[/tex]
[tex]\textsf{Solution:\quad$8$}[/tex]
Step-by-step explanation:
Question 1Assuming the account earns annual compound interest.
[tex]\boxed{\begin{minipage}{7 cm}\underline{Annual Compound Interest Formula}\\\\$ A=P\left(1+r\right)^{t}$\\\\where:\\\\ \phantom{ww}$\bullet$ $A =$ final amount \\ \phantom{ww}$\bullet$ $P =$ principal amount \\ \phantom{ww}$\bullet$ $r =$ interest rate (in decimal form) \\ \phantom{ww}$\bullet$ $t =$ time (in years) \\ \end{minipage}}[/tex]
Given values:
P = $720r = 4.8% = 0.048Substitute the given values or P and r into the annual compound interest formula to create an equation for the amount of money in the account after t years:
[tex]\implies A=720(1+0.048)^{t}[/tex]
[tex]\implies A=720(1.048)^{t}[/tex]
To find the amount of money in the account after 12 years, substitute t = 12 into the equation:
[tex]\implies A=720(1.75523549...)[/tex]
[tex]\implies A=1263.76955...[/tex]
[tex]\implies A=1263.77[/tex]
---------------------------------------------------------------------------------
Question 2[tex]\boxed{\begin{minipage}{9 cm}\underline{General form of an Exponential Function}\\\\$y=ab^x$\\\\where:\\\phantom{ww}$\bullet$ $a$ is the initial value ($y$-intercept). \\ \phantom{ww}$\bullet$ $b$ is the base (growth/decay factor) in decimal form.\\\end{minipage}}[/tex]
Given values:
a = 1 (initial number of bacteria)b = 2 (as the bacteria doubles)Substitute the given values or a and b into the exponential function formula to create an equation for the number of bacteria after x days:
[tex]\implies y=1(2)^x[/tex]
[tex]\implies y=2^x[/tex]
To find the number of bacteria after 3 days, substitute x = 3 into the equation:
[tex]\implies y=2^3[/tex]
[tex]\implies y=8[/tex]
Which unit of length would a microscope best help to see?
Answer:
The unit of length that a microscope best helps to see is 1 millimeter.
Step-by-step explanation:
Microscopes are instruments used for viewing objects that cannot be seen with eyes. The unit length of an object that a microscope can view should be a length that is very small
How much of a 14% ethanol fuel mixture should be mixed with 8 gal of 3% ethanol fuel mixture to get a mixture that is 12% ethanol?
(blank) gal of 14% ethanol solution is needed to produce a 12% ethanol solution.
Answer:
Step-by-step explanation:
A = x 14%=.14x
B=8 (4%)=.04(8)
=8x 12%= .12*8x
.14x+.04(8)=.12(8x)
.14x+.32=96x-.14x
.32=.82x/x
.32/.82=.39
The amount of 14 % of ethanol that needs to mixed is A = 36 gallons
What is an Equation?Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.
It demonstrates the equality of the relationship between the expressions printed on the left and right sides.
Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.
Given data ,
Let the equation be represented as A
Now , the value of A is
Substituting the values in the equation , we get
14% ethanol fuel mixture should be mixed with 8 gal of 3% ethanol fuel mixture to get a mixture that is 12% ethanol
So , the equation is
A ( 14 % ) + ( 8 ) ( 3 % ) = ( A + 8 ) ( 12 % )
On simplifying , we get
14A + 24 = 12A + 96
Subtracting 12A on both sides , we get
2A + 24 = 96
Subtracting 24 on both sides , we get
2A = 72
Divide by 2 on both sides , we get
A = 36 gallons
Therefore , the value of A is 36 gallons
Hence , the equation is A = 36 gallons
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At Dubble High School, 42% of the students play sports, 34% of the
students play a musical instrument, and 24% do both. What is the
probability that a randomly selected student at Dubble High School
plays a sport or a musical instrument?
Help me I need to finish this by tmr
5 por ciento es un número entero
Los números enteros están constituidos por todos los números que no tienen cifras decimales, por lo que sería verdadero afirmar que 5% es un numero entero.
¿Qué son los números enteros?
Los números enteros son un conjunto de números que se caracterizan por no tener cifras decimales. En general, los números enteros incluyen los positivos, negativos y el cero.
De acuerdo con lo anterior, podemos inferir que es verdadero afirmar que el 5% es un numero entero debido a que no tiene cifras decimales y es un número positivo. Por otra parte, si fuera 5.2% u otro valor con cifras decimales sería falsa la respuesta.
Nota: Esta pregunta está incompleta debido a que tiene información faltante. Aquí está la información faltante:
De acuerdo a reglas sobre los números, se puede concluir que 5 por ciento si es un número entero.
Opciones
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Please help me !!!!!!!!
Answer: y = 40deg, x = 80deg
Step-by-step explanation:
1. Because we see that there are parallel lines in the triangle to the left, we know that two of the angles of that triangle are 50deg
2. using the fact that triangles have a total of 180deg we get x = 80deg
To solve for y, we also know that there are two angles in that triangle which are the same, and one of them is y, therefore 2y + 100deg = 180deg, meaning 7 = 40deg
the checking account fees for banks a b c d are shown below on the table
Therefore, when comparing all the banks, Bank B has the lowest fees. Bank B is the best choice, thus.
what is linear equations?The algebraic equation y=mx+b is known as a linear equation. M serves as the y-intercept, and B serves as the slope. The previous clause has two variables, y and x, and is sometimes referred to as a "linear equation with two variables". Bivariate linear equations are those with two independent variables. The following are a few examples of system of equations: 2x - 3 = 0, 2y = 8, m + 1 = 0, x/2 = 3, x + y = 2, and 3x - y + z = 3. When an equation takes the form y=mx+b, with m denoting the slope and b denoting the y-intercept, it is referred to as being linear. The term "linear" refers to an equation having the form y=mx+b, where m stands for the slope and b for the y-intercept.
given
Charges are equal to $13.25 when 23 checks are signed from bank A.
Charges will be equal to $11.50 when 23 checks are signed from bank B.
Charges are equal to $15 when 23 checks are signed from bank C.
Charges are equal to $12.30 when 23 checks are signed from bank D.
Therefore, when comparing all the banks, Bank B has the lowest fees. Bank B is the best choice, thus.
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The complete question is :-
The checking account fees for Banks A, B, C, and D are shown in the table below.
Monthly Service Fee Per-Check Fee
Bank A $7.50 $0.25
Bank B None $0.50
Bank C $15.00 None
Bank D $10.00 $0.10
If a customer writes 23 checks per month, which bank will charge her the least in fees? Show your work.
Find the mode for the Following sets of numbers 83,97,85,84,96,80,87,91,80
Answer:
80
Step-by-step explanation:
80,80,83,84,85,87,91,96,97
in this numbers there is one mode which is 80 . it is mono.
BRAINLIEST EASY PROBLEM!!!!!!!!!!! 7th grade) find x and y.
Answer:
x = 20
y = 20
Step-by-step explanation:
In the given triangle, we can deduce that angle x is congruent to angle y using the Isosceles Triangle Theorem. Hence, we can construct the equation xº = yº.
We also know that the measures of the interior angles of a triangle add to 180º. Hence, we can construct the equation xº + yº + 140º = 180º.
We now have a system of equations, and since we already have an identity for xº (and also for yº), we can solve the system using the substitution method.
xº + yº + 140º = 180º
↓ substituting xº for yº
xº + xº + 140º = 180º
↓ subtraction 140º from both sides
2xº = 40º
↓ dividing both sides by 2
xº = 20º
↓ removing degree sign from both sides
x = 20
Now that we have solved for x, we have also essentially solved for y, as plugging this x-value into the equation xº = yº will just yield:
20 = y
y = 20
what is the greatest commen factor of 15 and 64
Answer: The greatest common factor for 15 and 64 is 1.
what is the value of the exponential expression below?
36 1/2
A pound of blueberries costs `\$3.50` and a pound of clementines costs `\$2.50`.
What is the total cost of `0.6` pounds of blueberries and `1.8` pounds of clementines?
The total cost of 0.6 pounds of blueberries and 1.8 pounds of clementine's is, $6.6.
What is Multiplication?To multiply means to add a number to itself a particular number of times. Multiplication can be viewed as a process of repeated addition.
Given that;
A pound of blueberries costs $3.50 and a pound of clementine's costs $2.50.
Hence, We get;
The total cost of 0.6 pounds of blueberries and 1.8 pounds of clementine's is,
⇒ 0.6 × $3.50 + 1.8 × $2.50
⇒ $2.1 + $4.5
⇒ $6.6
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What is one way a market economy affects the lives of private citizens?Citizens can change jobs relatively easily.Citizens cannot choose their own careers.Citizens do not have to pay for their housing.Citizens have little freedom and independence.
Citizens have the freedom and independence to choose their own career paths, as well as the ability to change jobs relatively easily if they desire.
In the Introduction, we saw Janet and Patrick discussing their favorite season of the year. They asked random ninth and tenth grade students to answer the following questions: Are you in ninth grade or tenth grade? What is your favorite season of the year: spring, summer, winter, or fall? Janet and Patrick surveyed a total of 219 students. Out of the 137 ninth graders who were surveyed, 28 said summer was their favorite season, and 12 said that winter was their favorite. The results showed 22 tenth graders said that spring was their favorite season, and 8 tenth graders said winter was their favorite season. A total of 45 students said that summer was their favorite season, and a total of 74 students said that fall was their favorite season. In this activity, you will construct two-way frequency tables to help Janet and Patrick analyze the data they gathered from their survey.
A frequency table is a list of objects with the frequency of each item given in the table. The frequency table is attached below.
What is a frequency table?The frequency of an occurrence or a value is the number of times it happens. A frequency table is a list of objects with the frequency of each item shown in the table.
The steps are lengthy to explain in words, but the process is fairly straightforward. So Start with figure 1 in the diagram below. The letters A through O represent the steps you'll take to replace them. we'll replace A with 219 since that's the grand total.
Then B is replaced with 137 since we're given that 137 girls were surveyed. Then C gets replaced with 219-137 = 82, and so on.
Using arithmetic (adding and subtracting) to gradually replace each letter with the proper number as figure 2 shows.
The alphabetical order directly corresponds to the order in which the values are given by teacher.
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Solve each system of equations below by graphing
Solution !
Y= -2/3x + 3
y = 2x-5
On solving the provided question, we can say that in these equation Y= -2/3x + 3 and y = 2x-5 let x = 1, Y = 7/3 and y = -3
What is equation?A mathematical equation is a formula that joins two statements and uses the equal symbol (=) to indicate equality. A mathematical statement that establishes the equality of two mathematical expressions is known as an equation in algebra. For instance, in the equation 3x + 5 = 14, the equal sign places the variables 3x + 5 and 14 apart. The relationship between the two sentences on either side of a letter is described by a mathematical formula. Often, there is only one variable, which also serves as the symbol. for instance, 2x – 4 = 2.
in these equation
Y= -2/3x + 3
y = 2x-5
let x = 1
Y = 7/3
y = -3
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Xochitl went into a movie theater and bought 6 bags of popcorn and 4 drinks, costing a total of $65. Alonso went into the same movie theater and bought 9 bags of popcorn and 8 drinks, costing a total of $107.50. Determine the price of each bag of popcorn and the price of each drink.
The price of each bag of popcorn and the price of each drink is $7.5 and $4 respectively.
How to calculate the equation?Let the drinks be represented as d.
Let the popcorn be represented as p.
From the information, Xochitl went into a movie theater and bought 6 bags of popcorn and 4 drinks, costing a total of $65. Thus will be:
6p + 4d = 65
Alonso went into the same movie theater and bought 9 bags of popcorn and 8 drinks, costing a total of $107.50. This will be:
9p + 8d = 107.50
Equating the equation
6p + 4d = 65 ..... i
9p + 8d = 107.50 ..... ii
Multiply equation i by 8
Multiply equation ii by 4
48p + 32d = 520
36p + 32d = 430
12p = 90
Divide
p = 90/12
= 7.5
6p + 4d = 65 .
6(7.5) + 4d = 65
4d = 65 - 45
4d = 20
d = 20/4
drink = 5
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Given the following system of equations, type the target variable matrix for y.
5x-y=6
2x+7y=9
The solution of the simultaneous equations using target matrix are; x = 51/37 and y = 33/37
How to use matrix to solve simultaneous equations?The target variable is defined as the variable whose values are modeled and predicted by other variables.
We are given the simultaneous equations as;
5x - y = 6
2x + 7y = 9
In matrix form, it is expressed as;
5 -1 6
2 7 9
row 2 = row 2 + row 1 * 7
This gives us;
37 0 51
Thus;
x = 51/37
Plugging in 51/37 for x in eq 1 gives;
5(51/37) - y = 6
Multiply through by 37 to get;
5*51 - 37y = 37*6
255 - 37y = 222
-37y = 222 - 255
y = 33/37
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Find the value of $10,000 in 10 years. The investment earns 8% for four years and then earns 4% for the remaining six years
Answer: After investing for 10 years at 8% interest
Step-by-step explanation: your $10,000 investment will have grown to $21,589 This calculator determines the future value of $10k invested for 10 years at a constant yield of 8.00% compounded annually
What two numbers multiply to 5 and add to -10
JTHF monitors offices for tax preparation fee averages, and considers averages greater than $625.00 to be excessive. Offices that consistently charge excessive fees may be subject to which of the following corrective actions? Select one: a. The office will immediately be terminated from the Program. b. The office will be fee capped, which will result in all Financial Product Applications with fees greater than $625.00 to be rejected. c. The office will be fee capped from charging any tax preparation fees. d. None of the above – the office can charge whatever tax preparation fees it wants. Incorrect
The corrective action that offices that consistently charged excessive fees would be subject to by JTFH is a. The office will immediately be terminated from the Program.
What is JTFH ?JTH Financial, LLC (JTHF) is a company that was formed in 2010 in Virginia and their goal and mode of operation is to help customers with tax settlement products that can help them get the best amount to pay for taxes.
JTH Financial, LLC has affiliate offices that engage in tax preparation for clients around the United States but they monitor these offices to ensure that their tax preparation fee averages is not excessive. If an office consistently has excessive fees charged to its customers, then JTH Financial terminates them from the program to protect its customers.
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HELP PLSSSSSSS GOD BLESS ILL GIVE BRAINLIEST
Jackson digs a hole at a rate of 3/5 feet every 10 minutes. After digging for 40 minutes, Jackson places a plant in the hole that fills exactly 9/10 feet of the hole. Relative to ground level, what is the elevation of the hole after placing the plant in the hole? Enter your answer as a mixed number in simplest form by filling in the boxes.
Answer:
[tex]2 \, \dfrac{4}{25} \textrm{ ft}[/tex]
Step-by-step explanation:
First, solve for how many feet Jason has dug after 40 minutes:
[tex]\dfrac{\dfrac{3}{5} \textrm{ ft}}{10 \textrm{ min}} \times 40 \, \textrm{min} = 2 \dfrac{2}{5} \, \textrm{ft}[/tex]
So, the hole he has dug is 2 2/5 ft deep.
Next, we can solve for how deep the hole will be after placing a plant in by simply multiplying 9/10 by the depth of the hole dug.
[tex]2\, \dfrac{2}{5} \times \dfrac{9}{10} = \dfrac{12}{5} \times \dfrac{9}{10} = \dfrac{6 \times 9}{5 \times 5} = \dfrac{54}{25} = 2 \, \dfrac{4}{25} \textrm{ ft}[/tex]
Reduce the answer to lowest terms 3/8÷ 1/7
Answer:
21/8
Step-by-step explanation:
When you are dividing fractions, use Keep-Change-Flip. See image.
Keep-Change-Flip changes the problem to a multiplication.
To multiply fractions, multiply straight across:
top × top and bottom×bottom see image.
We get 21/8 is already in lowest terms.
Help meeeee plssss I need to pass this by tmr
The statement means "whenever x is close to (but not equal to) a, then f(x) is a large positive number.
How do you find the limit of x approaches 0?When x is close to (but not equal to) a, then f(x) is a large positive number, according to the expression limxaf(x)=. In other words, f(x) grows larger and larger without bound as x approaches a.
For a rational function, we divide the numerator and denominator by the highest power of x that appears in the denominator to get the limits at infinity. This establishes which term in the overall expression controls how the function behaves at high x values.
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