3 years ago

Simplify this expression 3x +2a +5x +4a

Mathematics

1 answer:

umka21 [38]3 years ago

5 0

Answer: 8x + 6a

Step-by-step explanation: Combine your "x" terms and your "a" terms.

So 3x + 5x is 8x and 2a + 4a is 6a.

So the answer is 8x + 6a.

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Cheyenne ran a 5.6-kilometer race in 40 minutes. What was her speed in kilometers per hour? A. 224 B. 8.4 C. 7.1 D. 0.14

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Hey there! :D

Let's find what Cheyenne runs in 10 minutes.

Divide 5.6 by 4.

5.6/4= 1.4

Multiply that by 6. (there are 60 minutes in an hour)

1.4*6= 8.4

"B" is the answer.

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Sold 12 rolls of wrapping paper and 21 ribbon for $143.25. Then 16 rolls of wrapping paper and 25 ribbon for $181.25. How much i

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Step-by-step explanation:

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3 years ago

Simplify ten to the eighth divided by ten to the negative third.

In-s [12.5K]

Answer:

$10^{11}$

Step-by-step explanation:

A statement is given i.e. "ten to the eighth divided by ten to the negative third."

It means that 10 to power 8 divided by 10 to the power -3.

Mathematically,

$\dfrac{10^8}{10^{-3}}$

We know that, $\dfrac{x^a}{x^b}=x^{a-b}$

Here, x = 10, a = 8 and b = -3

So,

$\dfrac{10^8}{10^{-3}}=10^{8-(-3)}\\\\=10^{8+3}\\\\=10^{11}$

So, the answer is $10^{11}$

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3 years ago

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Alecsey [184]

Answer:

Step-by-step explanation:

Square root of 100 is 10

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6% sales tax, hotel charges $265 find cost before tax?

Mama L [17]

265 x 0.06 = 15.9

265 - 15.9 = 249.1

249.1 is your answer

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3 years ago

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