Beth travelled the remaining distance with an average speed of 52 mph
<u>Solution:</u>
Given, Beth drives 200 miles in 4 hours.
<em><u>The formula for distance speed is given as:</u></em>
--- eqn 1
<em><u>Calculating time taken for 18 miles:</u></em>
She drives the first 18 miles at an average speed of 36 mph.
Here distance = 18 miles
speed = 36 mph
Plugging in values in eqn 1 we get,
<em><u>Calculating average speed for the rest of the journey:</u></em>
Now, remaining distance = 200 miles – 18 miles = 182 miles
And time used for remaining journey = total time – time taken for first 18 miles
Plugging in values in eqn 1, we get
Thus the average speed for rest of journey is 52 mph
Lets width od field is x , x>0 (if x<0 it is no sense) yards and length is (x+40)yards
So square of field is x(x+40)=6000
x²+40x=6000
x²+40x-6000=0
(x+100)(x-60)=0
x₁=-100 no sense
x₂=60 yards - width of field
x+40=x+60=100 yards - length of field
Answer: 60 yards - width of field, 100 yards - length of field
:') alright. Break down the composite shape into 2 separate shapes:
The radius of the semi-circle is 14/2=7cm
So the area of the semi-circle is (pi×7^2)/2=77cm^2 to 1 d.p.
The area of the rectangle is 14×20=280cm^2
280+77=357cm^2 is the area of the composite shape
Answer:
the value of n = 0
Step-by-step explanation:
0 times anything always equals zero