Write an equivalent expression for 27x + 18.

Mathematics

1 answer:

Ugo [173]3 years ago

3 0

Answer:

9 (3x+2)

Step-by-step explanation:

27x + 18 = 9 (3x+2)

By simplifying the Given expression you get 9 (3x+2)

and no matter how many times you simplify that expression you always get the expression you started with so in other word their equavalent to each other

Hope this helps

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Solve the following system of equations by graphing and select the correct answer below: 3x + 5y = 38 4x − 2y = 16

grigory [225]

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Step-by-step explanation:

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How many bucketloads would it take to bucket out the world’s oceans? Write your answer in scientific notation.

kodGreya [7K]

Answer: $7\times10^{19} buckets$

Step-by-step explanation:

Given: A cubic kilometer= $10^{15}$ cubic centimeters

The volume of world’s oceans= $1.4\times10^{9}$ cubic kilometers of water.

⇒ The volume of world’s oceans= $1.4\times10^{9}\times10^{15}$ cubic centimeters of water.

Volume of a bucket = 20,000 cubic centimeters of water.

The number of bucket-loads would it take to bucket out the world’s oceans

$n=\frac{\text{volume of ocean}}{\text{volume of bucket}}=\frac{1.4\times10^{9}\times10^{15}}{20000}$

$\Rightarrow\ n=\frac{1.4\times10^{9+15}}{0.2\times10^5}......[a^n\times a^m=a^{m+n}]\\\Rightarrow\ n=7\times10^{24-5}.....[\frac{a^m}{a^n}=a^{m-n}]\\\Rightyarrow\ n=7\times10^{19}$