3 years ago

Can someone help, please?!

Mathematics

1 answer:

sergiy2304 [10]3 years ago

4 0

Answer:

one solution

Step-by-step explanation:

You might be interested in

When Danielle goes grocery shopping, she usually buys a gallon of milk and some dinner rolls. She has noticed that there seems t

nika2105 [10]

Answer: The answer is actually C

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

How many batches of trail mix can Eric make with 16 cups of peanuts, 15 cups of raisins, and 8 cups of walnuts?

vazorg [7]

Answer:27

Step-by-step explanation:

Are you in middle school

5 0

3 years ago

Which expression is equivalent to StartFraction 2 a + 1 Over 10 a minus 5 Endfraction divided by StartFraction 10 a Over 4 a squ

const2013 [10]

Answer:

$\frac{(2a + 1)^2}{50a}$

Step-by-step explanation:

Given

$\frac{2a + 1}{10a - 5} / \frac{10a}{4a^2 - 1}$

Required

Find the equivalent

We start by changing the / to *

$\frac{2a + 1}{10a - 5} / \frac{10a}{4a^2 - 1}$

$\frac{2a + 1}{10a - 5} * \frac{4a^2 - 1}{10a}$

Factorize 10a - 5

$\frac{2a + 1}{5(2a - 1)} * \frac{4a^2 - 1}{10a}$

Expand 4a² - 1

$\frac{2a + 1}{5(2a - 1)} * \frac{(2a)^2 - 1}{10a}$

$\frac{2a + 1}{5(2a - 1)} * \frac{(2a)^2 - 1^2}{10a}$

Express (2a)² - 1² as a difference of two squares

Difference of two squares is such that: $a^2- b^2= (a+b)(a-b)$

The expression becomes

$\frac{2a + 1}{5(2a - 1)} * \frac{(2a - 1)(2a + 1)}{10a}$

Combine both fractions to form a single fraction

$\frac{(2a + 1)(2a - 1)(2a + 1)}{5(2a - 1)10a}$

Divide the numerator and denominator by 2a - 1

$\frac{(2a + 1)((2a + 1)}{5*10a}$

Simplify the numerator

$\frac{(2a + 1)^2}{5*10a}$

$\frac{(2a + 1)^2}{50a}$

Hence,

$\frac{2a + 1}{10a - 5} / \frac{10a}{4a^2 - 1}$ = $\frac{(2a + 1)^2}{50a}$

4 0

3 years ago

Are the ratios 4:9 & 12:18 equivalent?

Zigmanuir [339]

No they aren't because they both can't be multiple by the same number

7 0

3 years ago

Read 2 more answers

What is the solution for x in the equation? 4x − 3 + 5 = 2x + 7 − 8x

Ivan

The answer is x= 1/2

7 0

3 years ago