What is an equivalent expression for 5x + 15

Mathematics

2 answers:

Lena [83]3 years ago

8 0

<h3>The answer is 5(3 + x)</h3>

Step-by-step explanation:

<h3>Factor out the Greatest Common Factor ( GCF) , '5'</h3>

<h3>Final result :</h3><h3>5( 3 + x)</h3>

andreyandreev [35.5K]3 years ago

4 0

We can write an equivalent expression by factoring this polynomial.

Since the GCF for these terms is 5, we can factor out a 5.

That leaves us with each term divided by 5 inside the parenthses.

So we have 5(x + 3).

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the runner's time to complete the marathon is 45 minutes. The time to complete the last marathon was 49.5 minutes. What is the p

Lana71 [14]

Answer:

9.09%

Step-by-step explanation:

To find percent decrease you have to use this equation:

$Percent Decrease = \frac{Initial -New}{Initial} x 100$

Initial = 49.5

New = 45

Plug in and solve:

$PD = \frac{49.5-45}{49.5} x 100\\\\PD = \frac{4.5}{49.5} x 100 \\\\PD = 0.0909 x 100\\\\PD = 9.09$

The percent decrease is 9.09%

<em>Hope this helps!!</em>

6 0

3 years ago

I NEED HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Dmitriy789 [7]

Answer:

LOL HAHAHAHAHA

answer: 2

8 0

3 years ago

Read 2 more answers

A^3+a+a^2+1 2a^2+2ab+ab^2+b^3

Vikentia [17]

$\frac{a^3+a+a^2+1}{a^3+a^2+ab^2+b^2} \cdot \frac{2a^2+2ab+ab^2+b^3}{a^3+a+a^2b+b} =\frac{a(a^2+1)+1(a^2+1)}{a^2(a+1)+b^2(a+1)} \cdot \frac{2a(a+b)+b^2(a+b)}{a(a^2+1)+b(a^2+1)} =\\\\=\frac{(a^2+1)(a+1)}{(a+1)(a^2+b^2)} \cdot \frac{(a+b)(2a+b^2)}{(a^2+1)(a+b)} = \frac{2a+b^2}{a^2+b^2}$