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Kazeer [188]
3 years ago
11

What is 3/9 =4/y y equals

Mathematics
1 answer:
mariarad [96]3 years ago
4 0

Answer:

Y = 12

Step-by-step explanation:

3/9 = 4/y

By cross multiplying, we get

3*y = 4*9

3y = 36

Y = 12

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A student earned a grade 80% on a math test that had 20 problems. How many problems on this test did the student answer correctl
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Answer:

16

Step-by-step explanation:

5,10,15,20,25,30,35,40,45,50,55,60,65,70,75,80

8 0
2 years ago
Is the following number rational or irrational?
Travka [436]

6.\overline{6}=6\dfrac{2}{3}=\dfrac{20}{3}

Since it can be expressed as fraction, it's a rational number.

4 0
3 years ago
Read 2 more answers
Hexagon DEFGHI is translated on the coordinate plane below to create hexagon D'E'F'G'H'I':
dem82 [27]
<span>Hexagon DEFGHI is translated on the coordinate plane below to create hexagon D'E'F'G'H'I'
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</span><span> d. (x, y)→(x + 7, y − 7)
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5 0
2 years ago
The cost of 4 notebooks and 3 pens is $14.50. The cost of 5 notebooks and 6 pens is $21.50. Part A: What is the cost of each ite
White raven [17]

Answer:

notebook: $2.5

pen: $1.5

part B, he can buy 3 pens

Step-by-step explanation:

A

let the cost of notebook be n, cost of pen be p

1. 4n + 3p = 14.5

2. 5n + 6p = 21.5

by 1, you can get 3p = 14.5 - 4n, put it into 2

5n + 2(14.5 - 4n) = 21.5

5n + 29 - 8n = 21.5

3n = 29 - 21.5 = 7.5

n = 2.5

put n = 2.5 into 1

4(2.5) + 3p = 14.5

3p = 4.5

p = 1.5

B

Waseem buy 3 notebooks for each pen, let number of pen be m, then the number of notebook will be 3m

m(2.5) + 3m(1.5) < 27

2.5m + 4.5m = 7m < 27

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6 0
2 years ago
Two friends work at different companies, P and S. Both companies use the number of hours that an employee works to calculate tha
tia_tia [17]

Answer:

62.4 hours

Step-by-step explanation:

For P:

Number of hours off on 10 hours of working=0.4

Number of hours on 2080 hours of working=2080/10*0.4

=83.2 hours

For S:  

Number of hours off on 100 hours of working=7

Number of hours on 2080 hours of working=2080/100*7

=145.6 hours

The difference between the vacation hours of P and S is of 62.4 hours. S will get more hours of vacation.  

6 0
3 years ago
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