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irinina [24]
3 years ago
13

What is the equation? Please help me!

Mathematics
1 answer:
OLga [1]3 years ago
8 0

Answer:

Triangle 7

The red one 2

Step-by-step explanation:

2+2+3+3 =10

7 + 3 = 10

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it takes an air pump 4.0 minutes to fill a twin sized air mattress (39 by 8.75 by 75 inches). How long will it take to fill a qu
Ivahew [28]

Volume of twin sized mattress =

39* 8.75* 75 = 25593.35 cubic inch

Volume of queen sized mattress =

60* 8.75* 80 = 42000 cubic inch

To fill 25593.35 cubic inch it takes 4 minutes

To fill 1 cubic inch it will take = \frac{4}{25593.35} minutes

So to fill 42000 cubic inch it will take = \frac{4}{25593.35} * 42000

= 6.56 minutes.



7 0
4 years ago
#13 please help solve this
rusak2 [61]

Answer:

The change in the total cost for each book printed is $10

The cost to get started is $1250

Step-by-step explanation:

In the linear equation y = m x + b, where

  • m is the rate of change per unit
  • b is the initial amount (value y at x = 0)

∵ y represents the total cost of publishing a book in dollars

∵ x represents the number of copies of the book printed

∵ y = 1250 + 10 x

- Compare it with the linear equation y = m x + b

∴ m = 10

∴ b = 1250

∵ m = Δy/Δx

- That means m is the change in the total cost per book

∴ The change in the total cost for each book printed is $10

∵ b is value y at x = 0

- That means b is the cost to get started before print any book)

∴ The cost to get started is $1250

5 0
4 years ago
Bobby bought 3 5/12 ft of red ribbon and 5 1/12 ft of yellow ribbon. ribbon costs $1.20 a foot. How much did Bobby spend on ribb
puteri [66]
First multiply the big numbers. 3*1.20= ($3.60) and 5*1.20= ($6) 
Now the fractions, 1/12 would equal 10 cents. 5/12 + 1/12= 6/12 which would also equal (60 cents).   3.60+6.00+.60= $10.20
6 0
3 years ago
How do I solve this equation?
xxMikexx [17]

Answer:

Step-by-step explanation:

1. Set 3x + 20 and 5x - 50 equal to each other

3x + 20 = 5x - 50

3x = 5x - 70

-2x = -70

x = 34

2. Once you've solved for x plug that in to 3x + 20 or 5x + 50

3(35)+ 20

105 + 20

125

3. After plugging in the x take that answer and subtract from 180 which will give you y

180 - 125 = y

55 = y

8 0
3 years ago
Read 2 more answers
Find the value of x. <br> 2 questions, 10 points each
Vsevolod [243]

Answer:

22

Step-by-step explanation:

25+23=48+22=70 in degree

8 0
4 years ago
Read 2 more answers
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