Answer:
-13a
Step-by-step explanation:
3x^2 - 8= 40
add 8 to both sides
3x^2= 48
divide both sides by 3
x^2= 16
take the square root of x and 16
x= 4
ANSWER: x=4
Hope this helps! :)
Answer:
472.5 cm^3
Step-by-step explanation:
Find the volume of the bottle
V = l*w*h
V = 7*5*18
V = 630 cm^3
She drank 1/4 of the water, so there is 3/4 of the water left
3/4 * 630
472.5 cm^3
Answer:
Time taken to reach maximum height=0.875 seconds
Maximum height = 78.25 ft
Step-by-step explanation:
The function which models the height of the ball is given as:
The function s(t) reaches its maximum height at the axis of symmetry. For a quadratic equation of the form
, the axis of symmetry occurs at
.
In s(t), a=-16, b=28

The ball reaches its maximum height after 0.875 seconds
(b)Maximum Height
Given 
At t=0.875

Maximum height = 78.25 ft
The answer is A because square root of 81 is 9 and 90.—— is the square root of 9.5. Therefore square root 86 is between 9 and 9.5