Answer:
area = 2 π r 2 + 2 π r h
Step-by-step explanation:
She has 21 out of 21/28 marbles left. So 21 ÷ 28 = .75. To convert a decimal to a percent, multiply by 100. .75*100=75
Answer:
Down below
Step-by-step explanation:

Answer:
B and C
Step-by-step explanation:
7 would be B. m = 2
8 would be C m = -1/2
If a line is parallel, then the slop is the same. If it is perpendicular, the it will be the opposite sign and the reciprocal. So parallel would be 2 and perpendicular would be -1/2
Hope this helped! :)
The coordinates consist of x coordinate and y coordinate
(x₁,y₁) = (-1,7)
(x₂,y₂) = (3,-3)
To find the midpoint of x coordinate, use this following formula
x midpoint = (x₁ + x₂)/2
x midpoint = (-1 + 3) / 2
x midpoint = 2/2
x midpoint = 1
To find the midpoint of y coordinate, use this following formula
y midpoint = (y₁ + y₂)/2
y midpoint = (7 + (-3))/2
y midpoint = (7 - 3)/2
y midpoint = 4/2
y midpoint = 2
ANSWER
The midpoint is (1,2)