3 years ago

Make Sense and Persevere What do you know? Whatare you trying to find?

Mathematics

1 answer:

marysya [2.9K]3 years ago

3 0

Answer:

Step-by-step explanation:

5x30= 150

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A = √7 + √c and b = √63 + √d where c and d are positive integers.

mrs_skeptik [129]

Answer:

$\displaystyle a:b=\frac{1}{3}$

Step-by-step explanation:

<u>Ratios </u>

We are given the following relations:

$a=\sqrt{7}+\sqrt{c}\qquad \qquad[1]$

$b=\sqrt{63}+\sqrt{d}\qquad \qquad[2]$

$\displaystyle \frac{c}{d}=\frac{1}{9} \qquad \qquad [3]$

From [3]:

$9c=d$

Replacing into [2]:

$b=\sqrt{63}+\sqrt{9c}$

We can express 63=9*7:

$b=\sqrt{9*7}+\sqrt{9c}$

Taking the square root of 9:

$b=3\sqrt{7}+3\sqrt{c}$

Factoring:

$b=3(\sqrt{7}+\sqrt{c})$

Find the ration a:b:

$\displaystyle a:b=\frac{\sqrt{7}+\sqrt{c}}{3(\sqrt{7}+\sqrt{c})}$

Simplifying:

$\boxed{a:b=\frac{1}{3}}$

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3 years ago

Please hurry.

Pie

Answer:

3i-1

Step-by-step explanation:

2+3i-3

3i-1

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3 years ago

The expression -2(x-4) is the same as?

Tomtit [17]

Answer:

-2x + 8

Step-by-step explanation:

I applied the distribution technique to the original question.

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2 years ago

Select the correct answer.What is 2/5 divided by 4/7 by equal to?A.7/5 B.7/10 C.10/7 D.7/5

qwelly [4]

The answer would be A . 7/5

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3 years ago

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PLEASE HELLP PLEASE!!!!! Create a problem that uses the commutative property to find the sum of at least 2 rational numbers. Sho

lyudmila [28]

<span>2+4 = 4+2
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would be your answer

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3 years ago

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Make Sense and Persevere What do you know? Whatare you trying to find?​

Make Sense and Persevere What do you know? Whatare you trying to find?