2 a² + a - 28 =
= 2 a² + 8 a - 7 a - 28 =
= 2 a ( a + 4 ) - 7 ( a + 4 ) =
= ( a + 4 ) ( 2 a - 7 )
To find the number of soccer balls that would be needed to cover the distance to the goal, you will need to find the diameter of the soccer ball.
To find the diameter use be formula for circumference to solve for the diameter.
C = pi x d
28 = 3.14 x d
d = 8.9 inches
The distance to cover is 24 feet, so convert to inches and divide by 8.9 inches.
24 x 12 = 288 inches
288/8.9 = 32.4 balls
You will need about 32 soccer balls to cover the distance.
Answer:
Step-by-step explanation:
we know that
The formula to solve a quadratic equation of the form
is equal to
in this problem we have
so
substitute in the formula
Answer: D
Step-by-step explanation:
1. Subtract 36 to 28.80
2. Divide the answer to the first price (36.00)- 7.5 divided by 36.00 or 36
3. When you calculate and find the answer as a decimal, then make it into a percentage
So if... you divide 7.5 divided by 36, you get the decimal of 0.2, and when you move the decimals two places only, you get your answer of 20%.
Hopefully it helped you!. Have a good day :-).