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Anuta_ua [19.1K]
3 years ago
5

Please may someone help me with these two questions I'm struggling with above.​

Mathematics
1 answer:
34kurt3 years ago
5 0

Answer:

Perimeter = 21 units

Volume = 110 cubic units

Step-by-step explanation:

Let the center of circle be (x,y).

(x+2)^{2} +(y-7)^{2} = (x)^{2}+(y+2)^{2}

4x - 18y = - 45

(x)^{2}+(y+2)^{2}=(x-2)^{2}+(y-2)^{2}

4x + 8y = 4

x + 2y = 1

Solving these 2 equations,

4 - 26y = -45

y = \frac{49}{26}

x = \frac{-36}{13}

radius = 3.35

Perimeter = 2\pi r = 21 units

Volume of cylinder = \pi r^{2} h

We have to add the volumes of the cylinders.

Volume of smaller cylinder = \pi \times 2^{2} \times 2 = 8\pi

Volume of larger cylinder = 27 \pi

Total volume = 35\pi = 110 cubic feet

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Y=x+12 please answer quickly and plus i need 20 characters<br>​
snow_tiger [21]

Answer:

I do not fully know your question, but your slope is m=1, your y-intercept is 12, and your x-intercept would be (-12,0). I hope this helps. Try to reconstruct your question next time.

5 0
3 years ago
NEED HELP PLEASE ASAP!!!
Blababa [14]

Answer:

13.5

Step-by-step explanation:

213.21/15.8 --->  ((213.21)100)/((15.8)100)

21321/1580 = 13 R 781.

781/1580 = 0.49~~~

We only need to be concerned about the tenth and hundredth place digits.

The decimal tells us that it rounds up from 4, so it's 5.

Thus, the answers 13+0.5, which is 13.5

7 0
1 year ago
The population of a city has decreased by 35% since it was last measured. If the current population is 9100 , what was the previ
Alina [70]

The previous population was 14000.

Explanation

The population decreased by 35% since the last measurement. So the current population is less than the previous population.

current population=9100

previous population =x

current population is 35% less than the previous population x

9100=x*(100-35)/100\\9100=(x*65)/100\\x=(100*9100)/65=14000

The previous population was 14000.

4 0
3 years ago
A race car driver won a 300 mile race with a speed of 194 miles per hour. Find the drivers time.
agasfer [191]
Time = distance / speed

time = 300/194
time = 1.546 hrs...not sure if u need that rounded...if so, then it is 1.5 hrs or 1 1/2 hrs
8 0
3 years ago
Roger is building a storage shed with wood blocks that are in the shape of cubic prisms. Can he build a shed that is twice as hi
azamat

Complete question is;

Roger is building a storage shed with wood blocks that are in the shape of cubic prisms. Can he build a shed that is twice as high as it is wide?

A. Yes. For every block of width, he could build two blocks high.

B. Yes. He could use half as many blocks for the height as the width.

C. There is no way to determine if he can do this.

D. No, it is not possible to do this

Answer:

A. Yes. For every block of width, he could build two blocks high.

Step-by-step explanation:

We are told that the wood blocks are in the shape of cubic prisms.

Now, cube shapes means that all sides are equal.

Now, if he divides the cube into 2, he can use one have to add to the top to make the height double since the sides are equal.

Thus, the height will now be twice a side of the cubic prism.

Thus, he can build a shed twice as high as its width.

6 0
3 years ago
Read 2 more answers
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