Answer:
38.48 inches
Step-by-step explanation:
A = πr²
r = d/2
r = 3.5
A = π(3.5)²
A = 12.25π ≈ 38.48
9514 1404 393
Answer:
Step-by-step explanation:
If we let x and y represent the costs of a lamp and end table, respectively, the two purchases can be written as ...
3x +2y = 520
2x -y = 20
__
These equations can be solved many ways. If we use "elimination", we can add twice the second equation to the first to eliminate y:
(3x +2y) +2(2x -y) = (520) +2(20)
7x = 560 . . . . simplify
x = 80 . . . . . . divide by 7
y = 2x -20 = 2(80) -20 = 140
The cost of a lamp is $80; the cost of an end table is $140.
Answer: 11621.1509596
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Answer:
x=5/7
Step-by-step explanation:
3(x-2)+7x=1/2(6x-2)
3x-6+7x=3x-1
10x-6=3x-1
10x-3x=-1+6
7x=5
x=5/7
Answer:
What ever it is, it should be minus. a = - 2
Step-by-step explanation:
Givens
v1 = - 2
v2 = - 10
t = 4 seconds
formula
a = (vf - vi)/t
Solution
a = (-10 - (-2)) / 4
a = (-10 + 2) / 4
a = (-8)/4
a = -2 m/s^2
