Hello there,

For problem one
The mile is an appropriate unit to measure the distance run over a one-week period.

For problem two
The pound is an appropriate unit to measure the weight of a bag of sugar.

For problem three
The yard is an appropriate unit to measure the distance run on a football field.

Hope this helps!

8 0

3 years ago

The radius of a car wheel is 14 inches. how many revolutions per minute is the wheel making when the car is traveling at 60 mph.

Dovator [93]

Answer:

$721\ \frac{rev}{min}$

Step-by-step explanation:

step 1

Find the circumference of the wheel

The circumference of a circle is equal to

$C=2\pi r$

we have

$r=14\ in$

substitute

$C=2\pi(14)$

$C=28\pi\ in$

assume

$\pi=3.14$

$C=28(3.14)=87.92\ in$

step 2

$1\ mile=63,360\ inches$

$1\ hour=60\ minutes$

we have that

The speed of the car is 60 miles/hour

Convert the speed to inches/minute

$60\ \frac{mi}{h}=60(\frac{63,360}{60})=63,360\ \frac{in}{min}$

step 3

Remember that

The circumference of the wheel subtends one revolution

$1\ rev=87.92\ in$

Convert the speed to rev/min

$63,360\ \frac{in}{min}=\frac{63,360}{87.92}=721\ \frac{rev}{min}$

3 0

3 years ago

A water tank is 1/8 full. the tank is 3/4 full when 42 gallons of water are added to the tank. how much water can the tank hold

Rashid [163]

Let, the water capcity of tank = x

it would be x*3/4 = 42

x = 42*4 / 3 = 168/3 = 56

So, the tank can hold up to 56 gallons

3 0

4 years ago

Read 2 more answers

The slopes of perpendicular lines _____.

HACTEHA [7]

Hey there

The slopes of perpendicular lines are negative reciprocals. Perpendicular lines have slopes that are negative reciprocals of each other.

= (C)

7 0

4 years ago

Read 2 more answers