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2 years ago

12

a well is being dug into the ground. the well needs to reach the depth of 120 feet. a machine can dig down in 12 minutes. what i

s the change in depth each minute the machine is digging

1 answer:

vladimir1956 [14]2 years ago

3 0

Answer:

10 feet

Step-by-step explanation:

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Use f(x)=1/2x and f^-1(x)=2x to solve the problems f^1(-2), f(-4), f(f^-1(-2)?

neonofarm [45]

F^1(-2) = 2(-2) = -4
f(-4) = 1/2 * -4 = -2

f(f^-1(x)) = x so answer is -2

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3 years ago

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An 118 inch board is cut into two pieces. one piece is 14 inches longer than the other piece find the length of each piece

IRINA_888 [86]

Step by step, 118-14=104, you would then divide 104 by 2 giving you 52, 52+14= 66, one piece is 66 inches while the other is 52 inches, adding them together would be 118

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3 years ago

Y1=4(5x-1), y2-=5x+1 and y1 is 344 more than 2 times y2

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$y_1=4(5^x-1)$ and $y_2=5^x+1$

$y_1=344+2y_2$
$y_1=344+2(5^x+1)$
$4(5^x-1) = 344 + 2(5^x+1)$
$(4)(5^x)-4=344+2(5^x)+2$
$4(5^x)-2(5^x)=344+2+4$
$2(5^x)=350$
$5^x= \frac{350}{2}$
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$log(5^x)=log(175)$
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3 years ago

I need help with this pls !

lord [1]

Answer:

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Step-by-step explanation:

idk and bala

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2 years ago

Polygon ABCDE is an irregular pentagon. Find the perimeter of the polygon. Round to the nearest tenth. Round to give final answe

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Answer:

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Step-by-step explanation:

AB = $\sqrt{2^{2}+3^{2} }$ = $\sqrt{13}$

BC = $\sqrt{2^{2}+2^{2} }$ = $2\sqrt{2}$

CD = $\sqrt{1^{2}+2^{2} }$ = $\sqrt{5}$

DE = 3

EA = $\sqrt{1^{2} + 2^{2} }$ = $\sqrt{5}$

The sum of all of these (in decimal form) is (approx.) 12.9

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2 years ago

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