Answer:
30 easy
Step-by-step explanation:
2x+7x= 180
9x=180
x=20
Plug the x value in to both expressions
2(20)=40
7(20)=140
Final answer: 40 degrees, 140 degrees
Answer:
The unit rate is 20.8 ft/ sec.
Step-by-step explanation:
It is given that the displacement of 644.8 ft in 31 s.
When the rate is define in the quantity of 1, then it is called unit rate.
In 31 s the displacement is 644.8 ft.

Divide both sides by 31,


For one second the value of the displacement is 20.8.
Therefore the unit rate for 644.8 ft in 31 s is 20.8 ft/sec.
The answer would be 2.83 because you'd round the .82 up to .83 because of the 8 in the thousandths place.
Answer:
C. the mean is greater
Step-by-step explanation:
took the test