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3 years ago

15

PLS HELP ME I need this done super fast plsss

1 answer:

lawyer [7]3 years ago

4 0

25) 2%, 2 x 10^(-1), 0.2 with the bar on top, 7/25, 4^(-1), square root of 2

26) 51.2%, 35/2, 4.8 x 10^2, 8^3, 3^6, 1.7 x 10^3

27) 5^(-2), 5%, 1.25 x 10^(-1), 1/2, square root of 5, cube root of 125

28) 7.81 x 10^1, square root of 61, cube root of 343, 0.78, 7/9, 8%

29) 2/5, square root of 1/9, 0.3, 3^(-2), 3.4 x 10^(-2), 3%

I can't fully see 30

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To determine the value of $f(g(x))$ , let us first substitute the value of $g(x)$ .

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3 years ago

Working together, it takes Sam, Jenna, and Francisco two hours to paint one room. When Sam works alone, he can paint one room in

lutik1710 [3]

Answer: 12 hours

Step-by-step explanation:

Given : Working together, it takes Sam, Jenna, and Francisco two hours to paint one room.

When Sam works alone, he can paint one room in 6 hours. When Jenna works alone, she can paint one room in 4 hours.

Let 't' be the time taken by Francisco to paint one room on his own.

Then , we have

Rate of work of Sam +Rate of work of Jenna + Rate of work of Francisco =Rate of work they all do together

$\dfrac{1}{6}+\dfrac{1}{4}+\dfrac{1}{t}=\dfrac{1}{2}$

i.e. $\dfrac{1}{t}=\dfrac{1}{2}-(\dfrac{1}{6}+\dfrac{1}{4})$

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i.e. $\dfrac{1}{t}=\dfrac{6-5}{12}$

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i.e. t= 12

Hence, Francisco would take 12 hours to paint one room on his own.

8 0

3 years ago