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3 years ago

Solve 3x − 5y = 17 9x − 15y = −4

Mathematics

2 answers:

dangina [55]3 years ago

8 0

Answer:

Step-by-step explanation:

lina2011 [118]3 years ago

3 0

Answer:

I don't know the answer but I highly recommend you use Math-way.

Step-by-step explanation:

It's very helpful with algebra, anyways good luck with your question, sorry I couldn't answer.

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3 years ago

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kobusy [5.1K]

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4 years ago

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A gardener measures the tallest of his prize -winning sunflowers and finds the height is 65 in. the sunflower has grown 12.1 inc

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4 years ago

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

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

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

hence, $7\times10^{19}$ bucketloads would it take to bucket out the world’s oceans.

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3 years ago