I don't know these types of questions sorry
Answer:105
Step-by-step explanation:
Answer:
x={-2,2}
Step-by-step explanation:
Graph them when intersecting.
Algebraically:
x^2 + 1 = -x^2 + 9
Add x^2 on both sides and subtract 1 on both sides.
2x^2 = 8
Divide 2 on both sides
x^2 = 4
Square root on both sides
|x| = 2
Remove abs value by putting + or - on the other side
x = {-2,2}
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Answer:
24.62 in^2
Step-by-step explanation:
The area of a circle is A=pi*r^2
Circumference is C=2*pi*r
Given a circumference of 17.6 inches, we get:
17.6=2*3.14*r
17.6=6.28r
2.8025=r
Given a radius of roughly 2.8 inches, we can find the area:
A=3.14*2.8^2
A=3.14*7.84
A=24.6176
So the area is around 24.62 in^2
Answer:
The rental fee is 25
Step-by-step explanation:
Total cost = rental fee plus cost per hours * number hours
t = f + 8*h where t = total cost, f = rental fee, h = hours
73 = f + 8*6
73 = f+ 48
Subtract 48 from each side
73 - 48 = f+48-48
25 = f
The rental fee is 25
