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Yanka [14]
2 years ago
10

A. 36 B. 12 C. 80 D. 60 E. 48 F. 20

Mathematics
1 answer:
Art [367]2 years ago
6 0

Answer:

it's d because it's correct

Step-by-step explanation:

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What is an equation of the line that passing through the points (-2, -5) and (4, 7) ?
monitta

Answer:

y=2x-1

Step-by-step explanation:

Use the slope-intercept formula: y=mx+b where m is slope and b the y-intercept.

(-2,-5)(4,7)

Use the slope formula for when you have two points:

\frac{y(2)-y(1)}{x(2)-x(1)}=\frac{rise}{run}

Rise over run is the change in the y-axis over the change in the x-axis. Insert values:

\frac{7-(-5)}{4-(-2)}

Simplify parentheses (negative+negative=positive)

\frac{7+5}{4+2}

Simplify

\frac{12}{6}=2

2 is the slope:

y=2x+b

Now use one of the points to find the y-intercept by substituting the x and y values into the equation. Solve for b:

(4,7)

y=2x+b\\7=2(4)+b

7=8+b\\7-8=8-8+b\\7-8=b\\-1=b\\b=-1

The y-intercept is -1. Insert into the equation. Change the + symbol to -:

y=2x-1

Done.

6 0
3 years ago
A bag contains 2 red marbles, 4 blue marbles, and 8 green marbles. What is the probability of choosing a blue marble?
bixtya [17]

Answer:

okay

Step-by-step explanation:

the probability of choosing blue marble is

p(blue)= 4/14

4 0
2 years ago
Explain why the sum 2x^2 + 4x^2<br><br>  is not equivalent to 6^4  <br>What is the correct answer?
Greeley [361]
6x^2 is the correct answer to the problem.
8 0
3 years ago
Read 2 more answers
Solve the following equations for x<br><br> 13−(2x+2)=2(x+2)+3x
Montano1993 [528]

Answer:

x = 7

Step-by-step explanation:

Distribute the 2 on the right and the -1 on the left: 13 - 2x - 2 = 2x + 4 + 3x

Combine like terms on each side of the equation: 11 - 2x = 5x + 4

Add 2x to both sides, and subtract 4 from each side: 7 = 7x

Divide both sides by 7: x = 7

4 0
3 years ago
What is the constant of proportional
Bond [772]

Answer:

The constant value (often written k) relating amounts that rise or fall uniformly together. It is the ratio of the amounts y and x: k = y/x. Put another way: y = kx.

5 0
3 years ago
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