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Debora [2.8K]
3 years ago
5

168

Mathematics
1 answer:
LiRa [457]3 years ago
7 0

Answer:

Books read             Points earned

7                                  5

1                                   0.71

3                                  2.14

10                                 7.14

13                                 9.28

Step-by-step explanation:

If Chloe read 7 books she would earn points = 5

Now for finding points earned for 1 book, we would divide 5 by 7

For 1 book she would earn points = 5/7 = 0.71 points

Now if 1 book is read, points earned are 5/7 or 0.71

Now, finding points earned for 3,10 and 13 books read:

For 3 books she would earn points = 5/7 * 3 = 2.14 points

For 10 books she would earn points = 5/7 * 10 = 7.14 points

For 13 books she would earn points = 5/7 * 13 = 9.28 points

So, The table would be:

Books read             Points earned

7                                  5

1                                   0.71

3                                  2.14

10                                 7.14

13                                 9.28

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Simon drove for 2 1/2 hours to get from his house to the beach. Simon averaged 55 miles per hour on the trip. What is the distan
Sav [38]

Answer:

The distance from Simon's house to the beach is 137.5 miles

Step-by-step explanation:

we know that

The speed is equal to the ratio of the distance and the time

Let

s ----> the speed in mph

x ----> the distance in miles

y ---> the time in hours

s=\frac{x}{y}

we have

s=55\ mi/h

y=2\frac{1}{2}\ h=\frac{2*2+1}{2}=\frac{5}{2}\ h

substitute in the formula and solve for x

55=\frac{x}{(5/2)}

x=(5/2)55\\x=137.5\ mi

3 0
3 years ago
What does the division fact 30 ÷ 5 = 6 mean?
Sholpan [36]
The division fact means that 5 can go into 30 6 times.

hope this helped!!!!
3 0
3 years ago
How many solutions does the following equation have?<br> -6(x + 7) = -4.x - 2
mestny [16]

Answer:

x=-20

Step-by-step explanation:

Given

-6(x+7)= -4x - 2

First of all, we have to solve brackets

So,

-6x-42=-4x-2

To find the solution of this equation, we have to isolate x on one side of the equation.

Adding 4x on both sides

-6x-42+4x = -2-4x+4x

-2x-42 = -2

Adding 42 on both sides

-2x-42+42 = -2+42

-2x=40

Dividing both sides by -2

-2x/2 = 40/-2

x = -20

The equation has only one solution which is x=-20 ..

5 0
3 years ago
Fond the value of x and the unknown angle in each problem
Airida [17]
I think its 9. Welcome

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MArishka [77]

Answer:

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Step-by-step explanation:

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