Answer:
if I solve for y do you have the value for x?
Work in the rates / minute
wilma:- in 120 minutes she mows 1 lawn
so in 1 minute she mows 1/120 lawn
similarly, Rock mows 1/80 lawn in 1 minute
working together 1/120 + 1/80 = 1/x where x is number of minutes working together
1/20 + 1/80 = 1/48
so 1/x = 1/48
x = 48
answer is 48 minutes
Answer:
0.595
Step-by-step explanation:
The computation of the percent error is as follows
Actual area is
= (720-yd × 120-yd)
= 86,400 square yards.
Estimated area is
= (700-yd × 50-yd)
= 35,000 square yards
Now
Error = (86,400 - 35,000)
= 51,400 square yards
Percent error is
= 51,400 ÷ 86,400
= 0.595
Answer:
Triangular Pyramid
Step-by-step explanation:
Answer:
The diameter of the model is 14.4 inches.
Step-by-step explanation:
The Diameter of the moon = 2,160 miles
The scale on the model represents 1 in = 150 miles
Let the model represents k inches in 2,160 miles.
So, by the Ratio of Proportionality:

⇒
or, k = 14.4 inches
⇒On the scale 2160 miles is represented as 14.4 inches
Hence the diameter of the model is 14.4 inches.