All categories

3 years ago

Which expression is equivalent to 3a+9a+7b-b

Mathematics

1 answer:

LuckyWell [14K]3 years ago

3 0

Answer:

12a+6b

Step-by-step explanation:

3a+9a+7b-b

Combine like terms

3a+9a +7b-b

12a +6b

You might be interested in

6th grade math I mark as brainliest

worty [1.4K]

Answer:

Step-by-step explanation:

Exponents are representations of repeated multiplication.

For example: 5³ = 5 x 5 x 5 or 125. If we want to compare values, we must evaluate each expression and then compares the final values for each.

3⁶ = 3 x 3 x 3 x 3 x 3 x 3 = 729

6³ = 6 x 6 x 6 = 216

729 > 216

We can immediately notice that 3⁶ is much larger than 6³

6 0

3 years ago

Is my answer correct ??

Tpy6a [65]

The largest triangle and the triangle whose hypotenuse is x are similar. So:

(21 + 4)/x = x/4

Cross multiply:

x^2 = 100

x = 10

Your answer is incorrect. It should be 10, not 20.

5 0

3 years ago

Read 2 more answers

Which model represents 2.36 divided by 4?

AnnZ [28]

Answer:

$= \frac{2.36}{4} \\ = \frac{59}{100} \\ = 0.59$

5 0

3 years ago

Manuel made $80 for 5 hours of work.

Virty [35]

Answer:

13 hours

Step-by-step explanation:

Let's first start by finding how much he makes in 1 hours:

$\frac{\$80}{5} =\$16$

Now we can set up two ratios

$\frac{16}{1} = \frac{208}{x}$

Solve by cross multiplying (multiply the numerator of the first fraction with the denominator of the second fraction and the numerator of the second fraction with the denominator of the first fraction)

16x=208

Divide both sides by 16 to isolate x

x=13

He would have to work 13 hours to make $208

3 0

2 years ago

3. Which sample size would give the

Alex17521 [72]

I think it would be 45 or 30

3 0

3 years ago