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3 years ago

125% of what number is 264

1 answer:

8 0

Let, the number = x
x * 125 / 100 = 264
x = 264*100 / 125
x = 26400/125
x = 211.2

So, that number & your final answer is 211.2

Hope this helps!

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bekas [8.4K]

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My answer is in the photo above

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2 years ago

Related rates(calculus)

telo118 [61]

Answer:

The volume increases at a rate of $125663.71 mm^ 3 / s$

Step-by-step explanation:

The rate of change of the radius with respect to time is 4 mm / s.

So:

$\frac{dr}{dt} = 4mm / s$

Now we must find a relationship between the volume of a sphere and its radius.

The equation of the volume of a sphere is:

$V = \frac{4}{3}\pi r^ 3$

So:

$\frac{dV}{dt} = \frac{4}{3}\pi * 3r ^ 2 * \frac{dr}{dt}\\\frac{dV}{dt} = 4\pi r ^ 2 * 4\\\frac{dV}{dt} = 16\pi r ^ 2$

The diameter of the sphere is 100 mm. Therefore its radius is 100/2 = 50 mm.

So:

$\frac{dV}{dt} = 16\pi (50) ^ 2\\\frac{dV}{dt} = 40000\pi mm^3 / s$

The volume increases at a rate of :

40000 π mm ^ 3 / s = 125663.71 mm^3/s

7 0

3 years ago

An elevator is on the twentieth floor. It goes down 11 floors and then up five floors. What floor is the elevator on now?

love history [14]

The answer is -4

because when you minus 11 and 20 that will get you -9 and then you add 5 that get you the answer

8 0

3 years ago

A rectangular photograph is surrounded by a border that is 1 inch wide on each side. The total area of the photograph and the bo

My name is Ann [436]

if 1 inch is added, you would add 2 inches to to each side of rectangle.

You would have: W+2, and, L+2,

Now let W+2 = x and, L+2 = y

Total area = x*y=M

If 1 inch is added again, like above you add 2 inches to both sides, you would then have:

(x+2)(y+2)=M+52;

xy+2x+2y+4=M+52;

xy=M

2x+2y=48

x+y=48/2=24

Now solve :

W+2+ L+2=24

W+L=20

The perimeter is 2(W+L)=20*2 = 40 inches.

6 0

3 years ago

If a coin is flipped 75 times, in how many ways could there be exactly two tails?

Dimas [21]

Answer:

2775 ways

Step-by-step explanation:

We have been given the case to choose exactly two tails when flipped 75 times means $^{75}C_2$

Since, $^nC_r$ is equal to $\frac{n!}{r!\cdot(n-r)!}$

Here n =75, r=2 substituting the values we will get

$\frac{75!}{2!(75-2)!}$

$n!=n\cdot (n-1)\cdot (n-2).....1$

After simplification we will get $\frac{75\cdot 74\cdot 73!}{2!\cdot73!}$

Cancel out the common term that is 73! we will get

after more simplification we will get $\frac{75\cdot 74\cdot}{2!}$

Finally, we will get $\frac{75\cdot 74\cdot}{2}=75\cdot37=2775$

4 0

3 years ago

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