Answer:
it is 123 degrees
Step-by-step explanation:
The answer is x equals 1/2.
Answer:
Two solutions (-4,-7) and (4,7)
Step-by-step explanation:
x = y + 3
x*y = 28
(y+3)*y=28
y^2+3y-28=0
(y+7)(y-4)=0
y=-7, y=4
x=-4, x=7
Answer:
100
Step-by-step explanation:
10 + 45*2
10 + 90
100
She'll have traveled approximately 431.07 km in 8.5 hours, also, 267.85448 miles per hour.