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Hitman42 [59]
2 years ago
13

A student reads 3/5 of a book in 30 minutes. if the student is reading at the same speed in 40 minute how much of the book will

the student read
Mathematics
1 answer:
Doss [256]2 years ago
6 0
He will read 4/5 of the book in 40 minutes
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Fittoniya [83]
Number 2 is 12, Number 3 is 6, Number 4 is 15, Number 5 is 8, Number 6 is 12,
5 0
3 years ago
noah and his Children went into the grocery store and they were still in apples for one dollar each and mangoes for two dollars
expeople1 [14]

apples cost one dollars and he is buying 9 = $9  and mangoes cost $2 so pretty much he can buy 5.5 mangoes in all

5 0
2 years ago
Solve the system of equations below y=3/2x-2 and 2x+y=-4
Anettt [7]
Rewrite the 2nd equation as 

y = -4 -2x

then substitute into the 1st equation so you get

-4 - 2x =  \frac{3}{2} x - 2

then solve for x. 

when you get the value of x, substitute it into either equation to find y

hope it helps
5 0
3 years ago
Read 2 more answers
A single scoop of ice cream costs $4.75 at Salt & Straw Portland. What is one combination of bills and coins you could use t
ivolga24 [154]

Answer: You could use 4 dollar bills and 3 quarters

Step-by-step explanation:

3 0
3 years ago
He Earth completely rotates on its axis once every 24 hours.
mafiozo [28]

Answer:

A)

58/3 = 19.33 hours

B)

84.00 hours

C)

2074.29 miles

Step-by-step explanation:

Under the assumption the earth is a perfect circle, then in a complete rotation ( 24 hours) the earth will rotate through  360 degrees or 2π radians.

A)

In one day or 24 hours the earth rotates through 360 degrees. We are required to determine the duration it takes to rotate through 290 degrees. Let x be the duration it takes the earth to rotate through 290 degrees, then the following proportions hold;

(24/360) = (x/290)

solving for x;

x = (24/360) * 290 = 58/3 = 19.33 hours

B)

In 24 hours the earth rotates through an angle of 2π radians. We are required to determine the duration it will takes the Earth to rotate through 7π radians. Let x be the duration it takes the earth to rotate through 7π radians, then the following proportions hold;

(24/2π radians) = (x/7π radians)

Solving for x;

x = (24/2π radians)*7π radians = 84 hours

C)

If the diameter of the earth is 7920 miles, then in a day or 24 hours a point on the equator will rotate through a distance equal to the circumference of the Earth. Using the formula for the circumference of a circle;

circumference = 2*π*R = π*D

                         = 7920*3.142

                         = 24891.43 miles

Therefore a point on the equator covers a distance of 24891.43 miles in 24 hours. This will imply that the speed of the earth is approximately;

(24891.43miles)/(24 hours) = 1037.14 miles/hr

The distance covered by the point in 2 hours will thus be;

1037.14 * 2 = 2074.29 miles

7 0
2 years ago
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