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gulaghasi [49]
4 years ago
15

The City of Oz has to repaint its cylinder-shaped water tower. Only the top and sides need to be painted. If the water tower has

a height of 60 feet and a radius of 20 feet, how many square feet must be painted? A) 400π ft2 B) 2400π ft2 Eliminate C) 2800π ft2 D) 4400π ft2
Mathematics
1 answer:
scoundrel [369]4 years ago
6 0
Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.
Among the choices provided the answer should be letter C. Below is the solution:

top 
<span>pi r^2 or pi * 400 </span>
<span>sides </span>
<span>2 pi r * 60 </span>
<span>40 * 60 pi </span>
<span>2400pi </span>

<span>so add the top and side we get p*400 + p*2400 = 2800 pi ft^2</span>

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Select the two values of x that are roots of this equation.<br> 2x-5=-3x^2
lakkis [162]

Answer:

A & D

Step-by-step explanation:

=> 3x²+2x-5 = 0

=> <em><u>Using Mid-term Break Formula</u></em>

=> 3x²-3x+5x-5 = 0

=> 3x(x-1)+5(x-1) = 0

=> (3x+5)(x-1) = 0

<u><em>Either,</em></u>

3x+5 = 0    <em><u>OR</u></em>   x-1 = 0

x = -\frac{5}{3}        <em><u>OR</u></em>    x = 1

3 0
3 years ago
An object travels along a circular path so that it completes one revolution in 8 seconds. If the linear velocity of the object i
natima [27]

Answer:

Using the concept of speed-distance-time, we find that the diameter of the circular path is 12 inches.

Step-by-step explanation:

Given that the object completes one revolution in 8 seconds. So, the circular speed of the object is 2πr/8 = πr/4 inches per seconds, where r is the radius of the circular path. The speed can be written as:

πr/4 inches per seconds = 60πr/4 inches per minute = 15πr inches per minute.

But, it is given that the circular speed of the object is 90π inches per minute. So,

90π = 15πr

r = 6 inches

Since, diameter is the double of radius, d = 2r = 12 inches.

For more explanation, refer the following link:

brainly.com/question/17978382

#SPJ10

4 0
2 years ago
Pleasee what are the answers??
uranmaximum [27]

Answer:

Step-by-step explanation:

y=(x-a)²+h

vertex (a,h)

axis of symmetry  x-a=0 or x=a

x-intercepts (none)

y-intercepts (none)

graph upper parabola (don't understand what it requires )

Domain (-∞,∞)

Range [0,∞)

3 0
3 years ago
(4^3)^7 <br><br> please answer quickly!!
faltersainse [42]

Answer:

4,398,046,510,000 or 4^21

Step-by-step explanation:

If you need to solve:

(4^3)^7

4^3= 64

64^7= 4.39804651×10^12 or 4,398,046,510,000

If you just need the exponents answer:

You multiply exponents so the answer would be 4^21

4 0
3 years ago
Fifteen bicyclists entered a race. In how many different orders can the top five finish so that awards can be given?
postnew [5]

Answer:

They can finish the race in 15 x 14 x 13 x 12 x 11 = 360360 order.

Step-by-step explanation:

There are 15 bicyclists in the race. The first position would come from the first bicyclist to the 15th. Meaning the first position can be occupied by 15 individuals. The second position can only be occupied by 14 individuals since one person is already first. Same way the third, fourth and fifth positions can be occupied by 13, 12 and 11 individuals respectively.

Therefore, they can finish the race in

15 x 14 x 13 x 12 x 11 = 360360 order.

5 0
3 years ago
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