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Harrizon [31]
2 years ago
8

Which best proves why the expressions 4 (x + 3) + 2 x and 6 (x + 2) must be equivalent expressions?

Mathematics
2 answers:
Maksim231197 [3]2 years ago
8 0

Answer:

A. When x = 3, both expressions have a value of 30.

Step-by-step explanation:

The first expression is 4(x+3)+2x

The second expression is 6(x+2).

When we substitute x=3 into the first equation, we get:

4(3 + 3) + 2(3) = 4 \times 6 + 6 = 24 + 6 = 30

When we substitute x=3 into the second expression we get:

6(3 + 2) = 6(5) = 30

This proves that the two expressions are equivalent.

The correct choice is A

chubhunter [2.5K]2 years ago
4 0

Answer: A

Step-by-step explanation:

Hope this helps can i have brainly-est please

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*Hope I Helped*
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musickatia [10]

The sign of f on the interval -7/3 < x < -3/5 is always positive.

<h3>How to solve for the sign on the interval</h3>

We have the equation

(5x+3)(x−2)(3x+7)(x+5) > 0

Now when f(x) > 0

Then -7/3 < x < -3/5

This would tell us that the sign would become positive when it changes from the less than to greater than sign

<h3>Complete Question</h3>

f(x)=(5x+3)(x-2)(3x+7)(x+5) has zeros at x=-5, x=-7/3, x=-3/5, and x=2

What is the sign of f on the interval -7/3<x<-3/5?

answer choices

f is always positive on the interval

f is always negative on the interval

f is sometimes positive and sometimes negative on the interval

f is never positive or negative on the interval

Read more on polynomials here:

brainly.com/question/2833285

#SPJ1

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