A wheel has a diameter of x inches and a second wheel has a diameter of y inches. The first wheel covers a distance of d feet in 100 revolutions. How many revolutions does the second wheel make in covering d feet?

Answers

Answer 1

Answer: You'd want an expression which relates to x, y and d.
The distance d is x times pi times 100. One divides back by pi and by y to get the # of revolutions (that 100 :)) ) and so one gets $(100x)/(y)$ as the number of revolutions.

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Hello! I could use some help with this algebra question:)
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Perimeter of a hexagon with 3.25 m sides

What is the area of the shaded region? A. 21 mm squared
B. 24 mm squared
C. 42 mm squared
D. 48 mm squared

Answers

Hello!

Answer:

$\boxed{ \bf The~area~of~the~shaded~region~is~B.~24 mm^2}$

______________________________________________________

Explanation:

To find the area of the shaded region, we must find the area of the inner white triangle and subtract it from the area of the outer blue one.

Outer:

A = $(1)/(2)$ bh

A = $(1)/(2)$ (12 · 5)

A = $(1)/(2)$ (60)

A = 30 mm²

Inner:

A = $(1)/(2)$ bh

A = $(1)/(2)$ (4 · 3)

A = $(1)/(2)$ (12)

A = 6

30 - 6 = 24

Please help I don’t know

Answers

Answer: Still air: 150 mph

Wind speed: 30 mph

Step-by-step explanation:

Answer:

The speed of the airplane in still air is ____ miles per hour.

The wind speed is _____ miles per hour

Step-by-step explanation:

So typically you just have to read the problem and understand it..

the answer in no.1 is 150

the answer in no.2 is 30

A store is selling a pair of sneakers for $80. However, they are having a sale that everything is 15% off. What is the new price of these sneakers after the sale.

Answers

The new price after the sales is $68

Step-by-step explanation:

The cost of a pair of sneakers = $80

Discount / sales offer= 15% off

New price = $80- 15% of $80

15% of $80 = 15 x 80/100

= $12

New price = 80 - 12

= $68

The new price after the sales is $68

Kayla earns a weekly salary of $290 plus a 5.5% commission on sales at a gift shop. How much would she make in a week if she sold $5799 worth of merchandise. How do I set up this problem?