MATHEMATICS MIDDLE SCHOOL

A cylinder has a radius of 12 m and a height of 9 m. What is the exact volume of the cylinder?A. 216pi m3
B. 108pi m3
C. 972pi m3
D. 1292pi m3

Answers

Answer 1
Answer: To find the answer you must do 12(radius) multiplied by 9(height) to find the volume So it's B
Answer 2
Answer:

Answer:

The answer is B

Step-by-step explanation:

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Find all real square roots of -121.

Answers

Answer:

11

Step-by-step explanation:

WHAT THREE EQUAL NUMBERS COULD YOU ADD TO GET 180

Answers

60 60 and 60. Hope I helped!
60 works 180/3 =60   hope i helped you

Tanya opened a savings account with a deposit of 550.she deposited 450 and withdrew 120.yesturday, Tanya deposited 720 into her account. What percentage of the new balance was the deposit?

Answers

550+450-120+720=1,600
720/1,600*100%
=720/160%
=45%
therefore, 45% of new balance

Remi has two cone-shaped containers with the same diameter. He will place the smaller container inside the larger one. Before he does this, he wants to fill the larger container with water so that it will be completely full but won't spill when he places the smaller container inside. The diameter of both containers is 14 cm. The height of the smaller container is 3 cm, and the height of the larger container is 17 cm.What volume of water must Remi put in the large container? Round your answer to two decimal places and use 3.14 to approximate pi.

Answers

use the formula for the cone
1/3 times (area of base) times height

so first we want to find the volume of both cones then subtract the volume of the smaller container from the larger one

area of base for both are equal
area of base=area of circle=pi times r^2
radius=diameter/2
diameter=14
radius=14/2
radius=7

pi times 7^2
pi times 49
3.14 times 49=153.86

smaller  so 1/3 times 153.86 times 3=smaller cone=153.86 cm^3

larger
so 1/3 times 153.86 times 17=871.873

subtract smaller from larger

871.873-153.86=718.013 cm^3
the volume of water needed is 718.01 cm^3

Could some one help me please / whats the answer for 4+3p= 19

Answers

To find p, you would first subtract the 4 from either side of the equation. You would then have 3p+15. Then you would divide by 3 on  both sides to get 9=5.

Therefore, p=5
4+3p=19
3p=19-4
3p=15
p=15/3
p=5

Find the values of k that make 2x^(2)+kx+7 factorable.

Answers

1)\n(2x+1)(x+7)=2x^2+14x+x+7=2x^2+15x+7\ \ \Rightarrow\ \ k=15\n\n2)\n(2x-1)(x-7)=2x^2-14x-x+7=2x^2-15x+7\ \ \Rightarrow\ \ k=-15\n\n3)\n(2x+7)(x+1)=2x^2+2x+7x+7=2x^2+9x+7\ \ \Rightarrow\ \ k=9\n\n4)\n(2x-7)(x-1)=2x^2-2x-7x+7=2x^2-9x+7\ \ \Rightarrow\ \ k=-9\n\n\nAns.\ there\ are\ four\ solutions:\ k\in \{15;-15;9;-9\}
the values of k that make >      2x² + kx + 7     factorable
the values of k are      9 & 15
thus
(2x² + 9x + 7)  =      (2x + 7)(x+ 1)              k -9
(2x²  + 15x + 7)  =    (2x +1)(x+7)                K  =15
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