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Lerok [7]
2 years ago
14

Jackie buys 5 books at $27 each and pays for them with 20 dollar bills. How many $20 bills does she need to pay for all the book

s?​
Mathematics
1 answer:
Reika [66]2 years ago
8 0

Answer:

7

Step-by-step explanation:

5 x 27 = 135

135 ÷ 20 = 6.75

round up to 7

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The average of a set of 18 consecutive integers is 22.5.what is the smallest set in the integer
Solnce55 [7]

Answer:

(y+17)÷18=22.5

y+17=22.5×18

y+17=405

y=405-17

y=388

5 0
2 years ago
Find the slope (or grade) of the treadmill shown. <br><br> The grade of the treadmill is___%
prisoha [69]

Answer:

grade=15%

Step-by-step explanation:

For 2 ft on x-axis it has elevated 0.3 ft on y-axis

m=0.3/2=0.15 ft

grade=m x 100

grade=15%

6 0
3 years ago
"Raju's father age is 5 years more than three times of Raju's age. Raju's father age is 50 years."​
Lana71 [14]

Let rajus age be x

  • His father=3x+5

ATQ

\\ \bull\tt\longmapsto 3x+5=50

\\ \bull\tt\longmapsto 3x=50-5

\\ \bull\tt\longmapsto 3x=45

\\ \bull\tt\longmapsto x=\dfrac{45}{3}

\\ \bull\tt\longmapsto x=15

8 0
2 years ago
Read 2 more answers
I'm completely lost
Vladimir [108]
Let x be the number of racing bikes, and let y be the number of mountain bikes.
1) 140x + 110y = 26150
2) 180x + 120y = 31800
Solve for one of the variables and plug that in to the other equation:
From equation 1: 140x = 26150 - 110y
x = (26150-110y)/140
Plug this into equation 2:
180((26150-110y)/140) = 31800
Solve for y, and find that y = 85 (the number of mountain bikes).
Plug that y into either equation to find x:
140x + 110(85) = 26150
x = 120 (the number of racing bikes).
So the answer is: 120 racing bikes and 85 mountain bikes.
4 0
3 years ago
I am trying to be a​
Angelina_Jolie [31]
Yes, X will equal 44
6 0
2 years ago
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