3 years ago

91d + 3) + 23 = 4d help plz

Mathematics

1 answer:

iragen [17]3 years ago

5 0

Answer:

The answer is d= -26/87.

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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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There are 75 students enrolled in camp. The day before the camp begins, 8℅ of the students cancel. how many students actually at

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69 kids still attend

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3 years ago

A car went 64 miles on 2 gallons of gas in the morning, 16 miles on 1/2 gallon of gas at noon, and 32 miles on 1 gallon of gas a

Marina86 [1]

Answer:

Yes,

Step-by-step explanation:

You take 64 miles for 2 gallons and divide it by 2. And it leads up to 32 miles and 1 gallon. Now you divide that by 2 again and get 16 miles and 1/2 gallon. So, to check that you can take 16+16 and you get 32 and take 32+32 and you get 64.

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2 years ago

perform the indicated operation write the answer with the correct number of significant digits 895.136 m + 276.51 m

Serggg [28]

Answer:

1171.65 m

Step-by-step explanation:

$895.136m \: + \: 276.51m \\ = 1171.646 \: m \\ following \: manipulation \: rules \\ in \: addition \: we \: take \: the \: least \: number \: of \: decimal \: places \\ = 1171.65 \: m \: (6 \: significant \: figures)$

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2 years ago

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MrRissso [65]

The first one is -5,-3 ab.

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3 years ago