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IRISSAK [1]
2 years ago
9

If a car makes a trip of 422 miles in 8 hours, what is its average speed per hour?

Mathematics
1 answer:
borishaifa [10]2 years ago
5 0

Answer:

52.75 miles per hour (MPH)

Step-by-step explanation:

422÷8 is equal to 52.75

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The rectangular floor of a classroom is 20 feet in length and 36 feet in width. A scale
vova2212 [387]

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5 0
2 years ago
Read 2 more answers
A triangle has an area of 64 square feet. If the height of the triangle is 8 feet more than its base, x, what are its height and
Nitella [24]

Answer:

8 feet

Step-by-step explanation:

Given data

Area= 64 square feet

Base= x feet

Height= x+8 feet

The expression for the area

A= 1/2b*h

substitute

64= 1/2*x*(x+8)

64= 1/2*x^2+8x

64= (x^2+8x)/2

cross multiply

64*2= x^2+8x

128= x^2+8x

rearrange

x^2+8x-128= 0

using the quadratic formula

a=1

b=8

c=-128

x= -b±√b^2-4ac/2a

x= -1±√8^2-4*1*-128/2*1

simplifying

x= 8

x=-16

Hence the height of the base is

h= 8 feet

7 0
2 years ago
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