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Nostrana [21]
3 years ago
9

JUST NEED THE ANSWER PLEASE I WILL MARK AS BRAINLIEST

Mathematics
2 answers:
finlep [7]3 years ago
6 0
-49/15 -3 4/15...........
stepan [7]3 years ago
6 0

The answer would be -3 4/15.

If x = -3/5, and y = 2/3, then x - 4y would equals -3/5 - 4(2/3), which would equals -3/5 - 2 2/3.

-3/5 - 4(2/3)
= -3/5 - 2 2/3
= -9/15 - 2 10/15
= -2 19/15
= -3 4/15
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Gravel is being dumped from a conveyor belt at a rate of 15 ft3/min, and its coarseness is such that it forms a pile in the shap
gayaneshka [121]

Answer:

0.13 ft/min

Step-by-step explanation:

We are given that

\frac{dV}{dt}=15ft^3/min

We have to find the increasing rate of change of height of pile  when the pile is 12 ft high.

Let d be the diameter of pile

Height of pile=h

d=h

Radius of pile,r=\frac{d}{2}=\frac{h}{2}

Volume of pile=\frac{1}{3}\pi r^2 h=\frac{1}{12}\pi h^3

\frac{dV}{dt}=\frac{1}{4}\pi h^2\frac{dh}{dt}

h=12 ft

Substitute the values

15=\frac{1}{4}\pi(12)^2\frac{dh}{dt}

\frac{dh}{dt}=\frac{15\times 4}{\pi(12)^2}

\frac{dh}{dt}=0.13ft/min

7 0
3 years ago
What is the length of line segment EF?
luda_lava [24]
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olga2289 [7]
Answer:
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Ann [662]

Answer:

The second one is correct.

6 0
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