Answer:
D. Subtract 4 from both sides
Explanation:
I just learned about quadratic equations in school. The first step of solving quadratic equations is to make sure it is in standard form and equal to 0.
Standard form:
ax^2 + bx + c = 0
The probability that the next 4 winners will all be 7th grade students is 3/4
The answer to this question comes out to be 0.8 kilometers
I kilometer is equal to 1,000 meters, so in order to get your answer, you divide 800 by 1,000.
Answer:
and 
Step-by-step explanation:
when you solve for r in the given equation, you need to apply the square root property, which gives positive and negative answers (both should therefore be considered):

then you need to include these two possible solutions:
and 