I need to use the distributive property to simplify each expression 2(5x-7)

Mathematics

2 answers:

n200080 [17]2 years ago

5 0

So you have to distribute the 2 into the 5x-7. So you will have 2(5x)-2(7) which equals 10x-14. So the answer is 10x-14

Westkost [7]2 years ago

3 0

Answer:

10x-14

Step-by-step explanation:

The Distributive property says that a(b+c) = ab+ac

In my example you distribute the value on the outside to the things on the inside

In your problem, you have a two on the outside that needs to be distributed to a 5x and a -7.

1) two multiplied by 5x equals 10x giving you the first part of your answer!

2) two multiplied by -7 equals -14 giving you the second part of your answer!

Put the two values together to get 10x-14

Let me know if you have any further questions :)

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2 years ago

Explain why ???? ??

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The answer is B.

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3 years ago

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S_A_V [24]

Answer:

The answer to question 14 is (6, 5), and the answer to question 15 is D) x = -2 and y = 1.

Step-by-step explanation:

Question 14 explanation: Because each line on the graph represents a different function, that means that the point where they intersect is the answer, as the point both appear on the equations $y = \frac{1}{2} x+2$ and $y=x-1$ . Since the two equations' point of intersection is (6, 5), that means the solution to the system of equations is the point (6, 5).

Question 15 explanation: The solution to the system of equations $3x+4y=-2$ and $2x-4y=-8$ would be the x and y values that satisfy both equations. If you select the pair on selection D, you'll find that it's valid. $3(-2)+4(1)=-2$ ⇒ $-6+4=-2$ ⇒ $-2 = -2$ , which is true, so choice D works for the first equation. $2(-2)-4(1)=-8$ ⇒ $-4-4=-8$ ⇒ $-8=-8$ , which is also true. This means that x = -2 and y = 1 is the solution to the system of equations, making choice D the correct answer.