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3 years ago

Help plz need help on all of them

Mathematics

1 answer:

Keith_Richards [23]3 years ago

4 0

$a.\ V=x^3,\ V=1728\ in^3\\\\x^3=1728\to x=\sqrt[3]{1728}\\\\x=\sqrt[3]{64\cdot27}\\\\x=\sqrt[3]{64}\cdot\sqrt[3]{27}\\\\x=4\cdot3\\\\\boxed{x=12\ in}$

$b.\ A_s=x^2\ (\text{the side is a square})\\\\A_s=12^2=\boxed{144\ in^2}$

$c.\ \boxed{SA=6x^2}\ (\text{six squares})$

$d.\ SA=6\cdot144=\boxed{864\ in^2}$

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Answer:

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Step-by-step explanation:

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x=106

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3 years ago

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3 years ago

Mike watches a caterpillar climbing on a tree trunk. He writes the expression -5/8 - (-1/8 - 1/2) to show the change, in feet, o

Lunna [17]

Answer:

A. $\frac{-5}{8}+(\frac{1}{8}+\frac{1}{2})$

B. $\frac{-5}{8}+(\frac{5}{8})$

D. $\frac{-5}{8}-(\frac{-1}{8}+(\frac{-1}{2}))$

Step-by-step explanation:

- Mike watches a caterpillar climbing on a tree trunk

- He writes the expression $\frac{-5}{8}-(\frac{-1}{8}-\frac{1}{2})$

- We need to find the equivalent expressions to this expression

∵ The expression $\frac{-5}{8}-(\frac{-1}{8}-\frac{1}{2})$ has a

common sign negative in the bracket

∴ $\frac{-5}{8}-(-)(\frac{1}{8}+\frac{1}{2})$

∵ (-)(-) = (+)

∴ $\frac{-5}{8}+(\frac{1}{8}+\frac{1}{2})$

∵ The expression $\frac{-5}{8}+(\frac{1}{8}+\frac{1}{2})$ is

equivalent to the expression $\frac{-5}{8}-(\frac{-1}{8}-\frac{1}{2})$

∵ In the expression $\frac{-5}{8}-(\frac{-1}{8}-\frac{1}{2})$ , lets

add the two terms in the bracket

$(\frac{-1}{8}-\frac{1}{2})=(\frac{-1}{8}-\frac{1(4)}{2(4)})=(\frac{-1}{8}-\frac{4}{8})=(\frac{-5}{8})$

∴ The expression = $\frac{-5}{8}-(\frac{-5}{8})$

∵ (-)(-) = (+)

∴ The expression = $\frac{-5}{8}+(\frac{5}{8})$

∴ The expression $\frac{-5}{8}+(\frac{5}{8})$ is equivalent to

the expression $\frac{-5}{8}-(\frac{-1}{8}-\frac{1}{2})$

∵ In the expression $\frac{-5}{8}-(\frac{-1}{8}-\frac{1}{2})$ , we can

write the bracket as $(\frac{-1}{8}-\frac{1}{2})=(\frac{-1}{8}+(\frac{-1}{2}))$

because (+)(-) = (-)

∴ The expression $\frac{-5}{8}+(\frac{5}{8})$ is equivalent to

the expression $\frac{-5}{8}-(\frac{-1}{8}+(\frac{-1}{2}))$

* <em>The equivalent expressions are A , B and D</em>

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4 years ago

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Eva8 [605]

Answer:

F(t<0.1 ) = 0.91791

Step-by-step explanation:

Solution:

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4 years ago