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2 years ago

Do 4x and 15 + x have the same value when x is 5? How do you know?

Mathematics

2 answers:

Masteriza [31]2 years ago

6 0

Yes, 4x = 4x5 which is 20. 15 + 5 is also 20 so it is equal

uysha [10]2 years ago

4 0

Answer:

yes

Step-by-step explanation:

4(5)= 20 and

15 + 5 = 20

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2 years ago

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2 years ago

Simplify (use only positive exponents) : (3y^10)(2y^2)/8y^5

nadezda [96]

When multiplying variables with exponents, all you have to do is to add the exponents and that’s the ‘product.’

So;

(3y^10)(2y^2) is equal to (3)(2)(y^10+2).

6y^12/8y^5

When dividing exponents, you do the opposite and subtract the exponents. And you divide the whole number by half.

6y^12/8y^5 = 3y^7/4

5 0

3 years ago

What is (x+4)(3x+7)/(x+4)(x+2) simplified?

iren2701 [21]

Answer:

$\frac{3x+7}{x+2}$

Step-by-step explanation:

Given the following question:

$\frac{(x+4)(3x+7)}{(x+4)(x+2) }$

In order to simplify the expression given we can only cancel the common factor which is four.

$\frac{(x+4)(3x+7)}{(x+4)(x+2) }$
$cf=(x+4)$
$\frac{x+4}{x+4}$
$=\frac{3x+7}{x+2}$

Cannot be simplified further due to it not having any more common factors. Your answer is "3x + 7 / x + 2."

Hope this helps.

8 0

1 year ago

Read 2 more answers