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Nat2105 [25]
3 years ago
15

4/5 n = 1 - 1/5 n solve for n: please help

Mathematics
2 answers:
borishaifa [10]3 years ago
8 0

Answer:

3/2 = 1/ 1/2

Step-by-step explanation:

1 1/5   divided by 4/5 is 1 1/2

tamaranim1 [39]3 years ago
3 0

Answer:

1

Step-by-step explanation:

4/5n=1-1/5n

so we collect the like terms

4/5n+1/5n=1

n=1

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Explain how subtracting 4/5 - 3/5 involves subtracting 4 and 3
Vesnalui [34]

Answer:

Explain how subtracting 4/5 - 3/5 involves subtracting 4 and 3

Step-by-step explanation:

Trains A and B, 200 km apart on the same straight track, travel at speeds of 50 km/hr and 65 km/hr respectively. At the end of 1 hour, the distance between the trains could not be

A. 85 km

B. 115 km

C. 185 km

D. 215 km

Apparently, the answer is B.) 115 km, but I need a solution.

3 0
2 years ago
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
Complete the equations and reasons to show that AC= EC
Aliun [14]

Answer:

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5 0
3 years ago
Lena has 2 boxes of buttons A and B.In total are 1.200 buttons .She move 360 buttons from box A to B.There are now 3 times as ma
Fittoniya [83]

Answer:

660

Step-by-step explanation:

Let  A = number of buttons in Box A

and B = number of buttons in Box B

We have two conditions:

(1)            A + B = 1200

(2)       B + 360 = 3(A – 360)     Remove parentheses

          B + 360 = 3A - 1080      Subtract 360 from each side

(3)                 B = 3A - 1440       Substitute (3) into (1)

A + 3A - 1440 = 1200               Combine like terms

      4A - 1440 = 1200               Add 1440 to each side

                4A  = 2640               Divide each side by 4

                   A = 660

6 0
3 years ago
2783 x 29 divided by 20 like plssss help me i don’t know this :(
Anna71 [15]

Answer:

4035,35

Step-by-step explanation:

I Think this is it!

7 0
3 years ago
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