40 = 0.5r
40/0.5 = r
80 = r
just divide the number in front of the r so that you can figure it out
2(100)2
200x2
400
Is the answer
Answer:
The correct answer is H
Step-by-step explanation:
1/4 of a wall in 2/3 of an hour is 40 min
so a wall takes 160 min which is 2 hours and 40 min
so 3 walls takes 8 hours
What is the absolute value of -70.
X^2/2 = 7x
x^2 = 14x
x^2 - 14x = 0
A quadratic equation is of the form ax^2 + bx + c
Therefore, in 3x^2 + 5x + 7, c = 7