3 years ago

Proportional or not proportional 18/72 4/16

1 answer:

7 0

If you want to simplify, its basically division. 18/72 goes to 9/36 4/16 is 1/4 and 9 times 4 is 36. Both problems are proportional to 1/4. Yes

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Express each number in scientific notation.

Alchen [17]

Answer:

1.3 x 10^6

8.825 x 10^8

1.25 x 10^4

5.167 x 10^7

Step-by-step explanation:

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3 years ago

Can someone please simplify 6r times s times 4rt?

Ahat [919]

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3 years ago

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Free_Kalibri [48]

$1 \frac{1}{2} = \frac{3}{2}\\\\2 \frac{1}{2} = \frac{5}{2}\\\\\\\\\frac{3}{2} \times \frac{5}{2} = \frac{3\times 5}{2\times 2} = \huge{\boxed{\frac{15}{4}=3\frac{3}{4}}}$

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3 years ago

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vazorg [7]

I think it might be 3/7

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3 years ago

3 times the sum of r and s squared minus 2 times the sum of r and d square

coldgirl [10]

Answer:

r^2 + 6rs - 4rd - 2d^2 + 3s^2

Step-by-step explanation:

3(r+s)^2 - 2(r+d)^2

PEMDAS

parenthesis, exponents, multiplication, division, addition, subtraction

in that order

3( r^2 + 2rs + s^2 ) - 2(r^2+ 2rd + d^2)

3r^2 + 6rs + 3s^2 - 2r^2 - 4rd - 2d^2

r^2 + 6rs - 4rd - 2d^2 + 3s^2

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2 years ago