MATHEMATICS HIGH SCHOOL

The diameter of a ball is 8 in. What is the volume of the ball?

Answers

Answer 1

Answer: Given that the formula of a sphere is V = 4/3 π r³
Your answer would be 268.083 in.³

Answer 2

Answer:

Answer:

the correct answer is 267.95,i took the test

Step-by-step explanation:

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Find the slope of the line y = 9/10x + 3/10

Answers

Answer:

Step-by-step explanation:

To find the slope of the line, we can look at the coefficient of x in the equation. In this case, the coefficient of x is 9/10. Therefore, the slope of the line is 9/10.

What is the sin, cos, and tan of -495 degrees, and -20π/3 ??

Answers

sin-495 = 0.98
cos-495 = 0.19
tan-495 = 4.95

sin-20π/3 = 0
cos-20π/3 = 0.3
tan-20π/3 = 0

joannna baked some cookies. She tried to divide them evenly between two plates,then three plates and finally four plate. Each time, she had one cookie left over. How many cookies did Joanna bake? (A)10 ( B) 13 (C) 11 (D) 9 (E) 12

Answers

Answer: 13 cookies

Step-by-step explanation: 13 divided by 2 is 6 with a remainder of 1. 13 divided by 3 is 4 with a remainder of 1. 13 divided by 4 is 3 with a remainder of 1.

Answer:

Step-by-step explanation:

Divide each option by 4.

13/4= 3.25

.25 x 4 =1(whole cookie)

Sienna has 80 yards of fencing to enclose a rectangular area. Find the dimensions that maximize the enclosed area. What is the maximum area?

Answers

$2x+2y=80\ \ \ /:2\n\n2x:2+2y:2=80:2\n\nx+y=40\ \ \ /-x\n\ny=40-x\ \ \ (D_x:x\in(0;\ 40))$

$Area=xy\n\nsubstitute\ y=40-x\n\nArea=x(40-x)=-x^2+40\n(it's\ quadratic\ function\ where\ a=-1;b=40;c=0)\n\nvertex\ of\ parabola:p=(-b)/(2a)\to p=(-40)/(2\cdot(-1))=(-40)/(-2)=20-it's\ max\n\nx=20\ then\ y=40-20=20\n\nAnswer:dimensions\ of\ rectangular\ is\ 20\ yd\ *\ 20\ yd,\nand\ area\ is\ 20^2=400\ yd^2.$

How many liters of peroxide should be added to 12 liters of an 8% peroxide solution so that the resulting solution contains 16% peroxide