Topic is Solving Systems by Elimination. Need the work
- 7x + 3y =- 24
2x - 4y =- 12
Answers
Related Questions
A math class is having a discussion on how to determine if the expressions 4x-x+ 5 and 8-3x-3 are equivalent using
substitution.
The class has suggested four different methods.
Which describes the correct method?
O Both expressions should be evaluated with one value. If the final values of the expressions are both positive, then the
two expressions must be equivalent.
OBoth expressions should be evaluated with one value. If the final values of the expressions are the same, then the
two expressions must be equivalent.
O Both expressions should be evaluated with two different values. If for each substituted value, the final values of the
expressions are positive, then the two expressions must be equivalent.
O Both expressions should be evaluated with two different values. If for each substituted value, the final values of the
expressions are the same, then the two expressions must be equivalent.
Answers
Answer:
the correct answer is the second one
Step-by-step explanation:
Answer:
B
Step-by-step explanation:
When you are trying to find if they are equivalent, you only want to use one value. If they are both positive, it doesn't mean that they are quivalent. They would have to be the same.
Find the values of x, y, and z. The diagram is not to scale.
Answers
Answer:
95 = x
85 = z
75 = y
Step-by-step explanation:
**remember** all triangles contain 180 degrees
this means that the triangle to the left should add up to 180 to we can set up this equation
180 = 60 + 25 + x
180 = 85 + x
95 = x
now **remember** a flat line is 180 degress so x + z is 180... we can set up this equation:
x + z = 180
plug in x = 95 from before
95 + z = 180
z = 85
**remember** again that a triangle in 180 degrees so for the right one we can set up this equation by pluggging in the z=85
180 = 20 + 85 + y
180 = 105 + y
75 = y
Answer:
first option
Step-by-step explanation:
The sum of the 3 angles in a triangle = 180° , thus
x = 180° - (60 + 35)° = 180° - 95° = 85°
The exterior angle of a triangle is equal to the sum of the 2 opposite interior angles.
z is an exterior angle of the triangle , thus
z = 60° + 35° = 95°
Using the sum of angles in a triangle, then
y = 180° - (95 + 20)° = 180° - 115° = 65°
Thus
x = 85°, y = 65°, z = 95°
how do you solve for x?
Answers
Answer: x = 6
Step-by-step explanation:
m<CAD = m<BAC
m<CAD = 4x
m<CAD + m<BAC = m<BAD
4x + 4x = 10x - 12
8x = 10x - 12
-10x -10x
-2x = -12
x = -12/-2
x = 6
Please help number 7
Answers
Answer:
Ok, so first, at the end of the equation, It says "+ 4" , right? So you put a point on positive 4 on the y-axis (the one that goes up and don, the vertical line.). Then, 2x means that's your slope, but since your graph only goes up to five, you gotta count down ward. So, go down from your point on the y-axis (4) twice and over to the LEFT (<--) once. Plot your point where you end up. then use a straightedge like a ruler, and connect your two points on the graph, and you have your line!
Hope this helps!
Answer:
it is cubix 12
Step-by-step explanation:
yw hope it helps!
write an equation in slope-intercept form of the line that passes through the points (-2,3) and (2,7)
Answers
Answer:
y = x+5
Step-by-step explanation:
First find the slope
m = ( y2-y1)/(x2-x1)
= ( 7-3)/(2 - -2)
( 7-3)/(2+2)
4/4
1
Then slope intercept form is
y = mx+b where m is the slope and b is the y intercept
y = 1*x+b
y = x+b
Substitute a point into the equation
7 = 2+b
7-2 =b
5=b
y = x+5
Answer:
M=1
Step-by-step explanation:
find the slope (M)
the slope is 1
Hope this helps Bodhi,
The answer is 10 but just tell me why its ten and I will give brainliest
Answers
Answer:
10 inches
Step-by-step explanation:
[tex]\frac{192}{375}[/tex]=[tex]\frac{8}{x}^{3} }[/tex]
[tex]\frac{192}{375}[/tex]=([tex]\frac{512}{x^{3} }[/tex])
x^3=512*[tex]\frac{375}{192}[/tex]
x^3=1000
[tex]3\sqrt{x^{3} }[/tex]=[tex]3\sqrt{1000}[/tex]
x=10 in
Answer:
it equals 10
Step-by-step explanation:
simply the following (z⁵)²
Answers
Answer:
Z^10
Step-by-step explanation:
Answer:
multiply 5*2=10
your answer will be =z^10
Step-by-step explanation:
if anyone could help that'd be great! :)
Answers
Answer:
Option 2
Step-by-step explanation:
Step 1: Translate
"a number" = x
"product" means multiply
"-2/3" = -2/3
"is" means equal
"-9/10" = -9/10
Step 2: Set up equation
-2/3x = -9/10
Step 3: Solve for x
Divide both sides by -2/3: x = 27/20Simplify: x = 1 7/2050 POINTS!!!!!!!!
Abbie, Chloe, and Xander are playing a dice game. The game consists of ten rounds. In each round, each person takes a turn rolling two dice and earns or loses points based on what they role. Points are awarded according to the following table: Roll Points Same number on both dice +3 Different numbers, with an even sum +1 An odd sum -2 At the end of ten rounds, the person with the highest number of points wins. In the first three rounds, Xander had the following rolls. Write an addition expression that can be used to find his point total at the end of the three rounds
Answers
Same number on both dice ( in first throw) + Different numbers ,with an even sum (in second throw) + An odd sum(third throw) + An odd sum(fourth throw) + Different numbers ,with an even sum (in fifth throw)
How to solve rolled dice problems?From the given ,question Abbie, Chloe, and Xander are playing a dice game.
They are playing with two dices.
The game rules are;
Same number on both dice = +3
Different numbers, with an even sum = +1
An odd sum = -2
After five rounds, score of Chloe = +1
1 = 3 + 1 + (-2) + (-2) + 1
⇒ Same number on both dice ( in first throw) + Different numbers ,with an even sum (in second throw) + An odd sum(third throw) + An odd sum(fourth throw) + Different numbers ,with an even sum (in fifth throw)
If we alter the arrangements, In each case you will get sum as (+1), as integers satisfy both Commutativity and Associativity with respect to addition.
Complete question is;
Abbie, Chloe, and Xander are playing a dice game. The game consists of ten rounds. In each round, each person takes a turn rolling two dice and earns or loses points based on what they role. Points are awarded according to the following table:
Same number on both dice +3
Different numbers, with an even sum +1
An odd sum -2
In the first five rounds, Chloe had a combined score of 1 point. Determine what five types of rolls she had in these first rounds. Express your answer in complete sentences.
Read more about Dice rolls at; https://brainly.com/question/2140973
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Answer:
-2
-2
-2
-2
-2
The least number of rounds will be four. She will need to throw four, (different numbers, with an even sum).
Step-by-step explanation:
Simplify (3x-7)^2
Step by step
Answers
Answer:
9x² - 42x + 49
Step-by-step explanation:
Given
(3x - 7)² = (3x - 7)(3x - 7)
Each term in the second factor is multiplied by each term in the first factor, that is
3x(3x - 7) - 7(3x - 7) ← distribute both parenthesis
9x² - 21x - 21x + 49 ← collect like terms
= 9x² - 42x + 49
Claire bought 10 chicken nuggets for $17.00. If Claire spent $5.00, how many chicken nuggets did she buy
Answers
Answer
She would have 3.4 chicken nuggets i she spent $5 so she would have 3 chicken nuggets.
Step-by-step explanation:
17.00 divided by 5 = 3.4 or round down to 3.
hope it helps :b
Pls help...
It is chose from A, B or C
Thanks
Answers
Answer:
The answer would be 'C'
It follows the criteria accurately.
which linear inequality is represented by the graph graph
Answers
Answer: choice A
Step-by-step explanation:
The linear inequality represented by the graph is y≥1/3x-1
What is Slope of Line?The slope of the line is the ratio of the rise to the run, or rise divided by the run. It describes the steepness of line in the coordinate plane.
The slope intercept form of a line is y=mx+b, where m is slope and b is the y intercept.
The slope of line passing through two points (x₁, y₁) and (x₂, y₂) is
m=y₂-y₁/x₂-x₁
Let us find slope of line passing through points (0, -1) and (3, 0)
Slope = 0+1/3
=1/3
y intercept we have to find
0=1/3(3)+b
b=-1
So equation of line is y=1/3x-1
As the shading is away from origin, we use the greater than or equal to symbol.
y≥1/3x-1
Hence, the linear inequality represented by the graph is y≥1/3x-1
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A 24-ounce bag of name brand of cereal is $1.19. How much is it per ounce? Round to the nearest cent.
Answers
Answer:
It would be around 5 cents an ounce
Step-by-step explanation:
0.04958333333 would be the answer but you have to round to the nearest cent so the correct and proper answer would be .05 cents per ounce
what is 87 divided by 15 with remainder
\
Answers
Answer:
5.8
Step-by-step explanation:
87/15 = 5.8
convert 8/3 to a mixed number
Answers
============================================
Work Shown:
8/3 = (6+2)/3
8/3 = 6/3 + 2/3
8/3 = 2 + 2/3
8/3 = 2 & 2/3
The whole part is 2. The fractional part is 2/3.
-----------
Another way you could do the problem is to use long division as shown in the diagram below.
The result of the long division is
8/3 = 2 remainder 2
The quotient 2 forms the whole part and the remainder is the numerator of the fractional part 2/3.
So that's another way to get 2 & 2/3
ANSWER FAST What is an equation of the line that passes through the point (1,3) and is perpendicular to the line x+3y=9?
Answers
y = 3x + 0 is the answer I believe.
Liam earned $1,200 in 2 weeks at his job. Matthew earned $1,450 in 4 weeks at his job. Which explains who earned more per week? A. Liam earned more per week because in 2 weeks he earned $250 more than Matthew earned in 4 weeks. B. Liam earned more per week because in 2 weeks he earned almost the same amount as Matthew earned in 4 weeks. C. Matthew earned more per week because in 4 weeks he earned $250 more than Liam earned in 2 weeks. D. Matthew earned more per week because he worked twice as many weeks as Liam worked.
Answers
Answer:
B. Liam earned more per week because in 2 weeks he earned almost the same amount as Matthew earned in 4 weeks.Step-by-step explanation:
in this problem we want to find who earns more between Liam and Mathiew
given
Liam earned $1,200 in 2 weeks
Matthew earned $1,450 in 4 weeks
Another way to find out who earns more per week is to find their weekly earns
for Liam earned $1,200 in 2 weeks
in a week he will earn= 1200/2
=$600 per week
for Mathew earned $1,450 in 4 weeks
in a week he will earn= 1450/4
=$362.5 per week
In a week Liam earns more
a roofer charges $60 for the first hour of service call and $25 per hour for each additional hour. The roofer also charges a fee for all materials used plus 30% over the cost of the materials. Let r-roofer's cost of materials and h= number of hours worked. What expression could be used to find the cost of a service call
Answers
Answer:
y=60+25h+0.3rStep-by-step explanation:
let y be the total charges
given that the hour is h
and the cost for raw material is r
therefore
1. The first hour of service call = $60
2. For each additional hour= 25h
3. 30% over the cost of the materials.= 30/100*r=0.3r
total charges
y=60+25h+0.3r
therefore the expression is
y=60+25h+0.3r
What is the quotient of 6 and 2?
?
-12.
1
12.
0
12.
0 12.
Answers
Answer:
-12
Step-by-step explanation:
I got it right on edgen
Is this a function or Not function? How do you know?
Answers
Answer:
No
Step-by-step explanation: because multiple points have the same x value and it fail the vertical line test
Jayden recently learned that the atmosphere is made of gases. Which is NOT a way in whichgases are helpful to life on Earth?A.It provides carbon monoxide to help plants growB.It protects us from the Sun's harmful raysC.It allows us to breatheD.It protects us from meteors
Answers
Answer:
A. It provides carbon monoxide to help plants grow.
Step-by-step explanation:
The only incorrect option is that carbon monoxide is required by plant, but the correct statement would be carbon dioxide is required my plants, for its growth, which helps to perform the process of photosynthesis.
The rest of the statements are correct.
As, the atmosphere acts as a blanket, which protects the earth from the harmful rays of the sun.
And, atmosphere constitute of various gases, which enables the living organisms to breath.
And, the atmosphere protects from any meteors entering from space.
A government is investing Heavily in many different industries. It is improving roads to allow companies to ship their products more easily, making sure high speed Internet is available at a low cost, and loaning money to start up companies. It is also increasing funding for education to make sure the next generation of workers as the skills that needs to be productive. Which macroeconomic goal is this government trying to achieve?
A. Decreasing per capita GDP
B. Reducing unemployment
C. Reducing inflation
D. Increasing GDP
Answers
What the government is trying to achieve is to incease the output within the borders of the country which will result to: D. increasing GDP.
What is GDP?GDP stands for gross domestic product. It is the monetary value of of goods and services produced in a country over a period of time by the final user.
GDP aacounts for all output that are generated within a country's border.
Therefore, the macroeconmic goal that the government aims to achieve through its given actions is: D. increasing GDP.
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Answer:reducing unemployment
Step-by-step explanation:just took test
Please answer this.. please
Answers
PLEASE PLEASE HELP 5 MINUTES HELPP HELPP WILL MARK BRAINLIEST!!!!!
Answers
Answer:
The answer is the first choice and the last choice.
Step-by-step explanation:
The first one is already solved for y, so when you plug 9 into the equation in the x spot since 9 is the x-coordinate of the point, you get -2, which is correct because it is the corresponding y-value.
The second one is a mess when trying to solve and it clearly doesn't yield the right answer.
For the last one, when you solve for y and then plug in 9 for x, you get -2, the y-value making it correct.
A,B,C OR D
PLS HELP..
Answers
Answer:
DDDDDDDDDDDDDd
Step-by-step explanation:
Answer:
its d
Step-by-step explanation:
its steeper than the others
You are baking a casserole. The recipe calls for of a cup of beans to
make 5 servings. How many cups of beans would you need to make 25
servings?
Answers
A copy machine produces 40 copies in 5 minutes. How many copies can the machine make in 3 minutes? Solve and explain your solution.
Answers
Answer:
24
Step-by-step explanation:
40 divided by 5 = 8
8 x 3 = 24
Plz mark me brainsliesttttt
What is the probability that a randomly selected person is a woman given that they own a pet
Answers
Answer:
lmk if i am incorrect
Step-by-step explanation:
78/100 is .78
there is a 78 percent chance that a woman has a pet
1. If f(x)=10- xạ, then which of the following is the value of f (-2)?