(distribute)
(collect like-terms)
(we flipped the sign because we divided by a negative)
Answer:
105 feet cubed
Step-by-step explanation:
1/2 cubed is 0.125 Since there are 840 wooden blocks, .125x840 is 105 feet cubed
If Gail practises swimming for 1 and 1/4 hours a day, then in a week she'll do:
1 1/4 * 7 = 5/4 * 7 = 35/4 = 8 3/4 [hours]
In other words she'll practice 8 hours and 45 minutes a week (assuming that she's still practicing on weekends).
Answer:
First, we bring the equation to the form ax²+bx+c=0, where a, b, and c are coefficients. Then, we plug these coefficients in the formula: (-b±√(b²-4ac))/(2a) . See examples of using the formula to solve a variety of equations.
