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2 years ago

5.

Mathematics

1 answer:

Serhud [2]2 years ago

7 0

3•4=12
16-12=4

She has 4feet left

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25 — 3x = 40<br> x =<br><br> Please answer quick thanks

Keith_Richards [23]

Answer:

x=-5

Step-by-step explanation:

-3x+25=40. You want to isolate x so you have to subtract 25 from both sides. -3x=15. We then want x to be isolated so we have to divide both sides by -3 to make x by itself. x=-5. Therefore, x=-5.

If this helps please mark as brainliest

4 0

2 years ago

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How much money is 1 quarter,1 dime and 1 nickle?

Alex73 [517]

Answer:
40 ¢
0Step-by-step explanation: 25 + 10 + 5 = 40

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2 years ago

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A vertical cylinder is leaking water at a rate of 4m3/sec. If the cylinder has a height of 10m and a radius of 2m, at what rate

Katyanochek1 [597]

Answer:

Therefore the rate change of height is $\frac{1}{\pi}$ m/s.

Step-by-step explanation:

Given that a vertical cylinder is leaking water at rate of 4 m³/s.

It means the rate change of volume is 4 m³/s.

$\frac{dV}{dt}=4 \ m^3/s$

The radius of the cylinder remains constant with respect to time, but the height of the water label changes with respect to time.

The height of the cylinder be h(say).

The volume of a cylinder is $V=\pi r^2 h$

$=( \pi \times 2^2\times h)\ m^3$

$\therefore V= 4\pi h$

Differentiating with respect to t.

$\frac{dV}{dt}=4\pi \frac{dh}{dt}$

Putting the value $\frac{dV}{dt}$

$\Rightarrow 4\pi \frac{dh}{dt}=4$

$\Rightarrow \frac{dh}{dt}=\frac{4}{4\pi}$

$\Rightarrow \frac{dh}{dt}=\frac{1}{\pi}$

The rate change of height does not depend on the height.

Therefore the rate change of height is $\frac{1}{\pi}$ m/s.

4 0

3 years ago

Two hot-air balloons, one red and one blue, took off at the same time from different platforms. Each began ascending at a consta

Nataly_w [17]

Answer:

1. the red balloon

2.they both ascended at the same rate

Step-by-step explanation:

4 0

2 years ago

What does x equal. I need help

Misha Larkins [42]

Do 90 minus 20 I think

4 0

3 years ago