The average speed he must ride to get to the store before they close is a minimum of 10 mph
<h3>How to calculate average speed?</h3>
We are given;
Distance to store = 2.5 miles
Time to get to store = 15 minutes = 15/60 hours = 0.25 hours
Now, formula for average speed is;
Average speed = distance/time
Thus;
Average Speed = 2.5/0.25
Average Speed = 10 mph
Thus, we conclude that average speed he must ride to get to the store before they close is a minimum of 10 mph
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Answer:
8/7 =x
Step-by-step explanation:
3 - 2(x - 4) = 5x + 3
Distribute
3 -2x +8 = 5x+3
Combine like terms
11 -2x = 5x+3
Add 2x to each side
11-2x+2x = 5x+2x+3
11 = 7x +3
Subtract 3 from each side
11-3 = 7x +3-3
8 = 7x
Divide each side by 7
8/7 =7x/7
8/7 =x
1: R= 4cm, h=14cm, volume outside of the sphere:
r^2=l^2-h^2
14-4=10cm
tanx=4/10
x=21.8 degrees
so tan(21.8)=r/14
r=5.6 cm
