<span>3.12
First, write an equation to express what you know.
g = number of girls
b = number of boys
b * 2.52 + g * x = 2.88(b+g)
Solve for x, first substitute known values for g and b
12 * 2.52 + 18 * x = 2.88(12+18)
Add and multiply what you already know
30.24 + 18x = 86.4
Subtract 30.24 from both sides
18x = 56.16
Divide both sides by 18
x = 3.12
Therefore the GPA of the girls is 3.12</span>
Answer:
the answer is 1188
Step-by-step explanation:
PLEASE MARK AS BRAINLIEST
Answer:
4x - 6
Step-by-step explanation:
2 × 2x = 4x
2 × -3 = -6
4x -6
Both equal so set equal to each other
-1/3y+4/3=2y+6
times both sides by 3
-y+4=6y+18
add y to both sides and minus 18 both sides
-14=7y
divide both sides by 7
-2=y
sub back
x=2y+6
x=2(-2)+6
x=-4+6
x=2
(2,-2)
Answer:
5.97
Step-by-step explanation:
If the radius of the circle = r then
pi r^2 = 56
r^2 = 56/pi
r = sqrt(56/pi)
The radius of the circle is equal to half of a diagonal of the square. That is,
r = (1/2) sqrt (2x^2)
= x (sqrt 2)/2
= x/(sqrt 2)
So x = r sqrt 2
= sqrt (56/pi) sqrt 2
= 4 sqrt (7/pi)
= 5.9708
