Answer:
t=-6
Step-by-step explanation:
Answer:
c
Step-by-step explanation:
because I had a test on these
Answer:
Step-by-step explanation:
Given
x² + x
To complete the square
add ( half the coefficient of the x- term )² to x² + x
x² + 2(
)x + ( )² = x² + x +
= (x + )² ← perfect square
17.775 is the most precise since it has the most decimals. However, it may not be correct.
Answer:
12 hr. mowing lawns
28 hr. working at Mc Donalds
Step-by-step explanation:
Let t = time mowing lawns
then 40 - t = time working at McDonalds
7,5(40 - t) + 6t = 282
300 - 7.5t + 6t = 282
-1.5t = -18
t = 12 hr. mowing lawns
40 - t = 40 - 12 = 28 hr. working at Mc Donalds
