Answer:
The radius is 5 in
Step-by-step explanation:
The area of a circle is given by the formula
A = pi *r^2
We know the area = 78.5 in^2 (volume would be in^3 area is in^2)
78.5 = 3.14*r^2
Divide each side by 3.14
78.5/3.14 = 3.14/3.14*r^2
25 = r^2
Take the square root of each side
sqrt(25) sqrt(r^2)
5 =r
Answer:
x+ 3/2y= 15
Step-by-step explanation:
8x+12y=120
To put the equation into standard form, the leading coefficient has to be 1. So, divide the whole equation by 8.
x+ 3/2y= 15
y=-4x+7
the -4 is the slope and the 7 is the y-intercept
ANSWER
EXPLANATION
The given line has equation;
The slope of this line is
-4
The given line is parallel to this line so it has the same slope:
The equation of this line is in the form:
We substitute the slope and the point:
(3,6)
Answer: x = -5
Step-by-step explanation: you add -3 to the other side, which will look like x = 3 - 8
