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mihalych1998 [28]
3 years ago
14

When y=3. Which expression is equivalent to 5y-7y

Mathematics
2 answers:
Flura [38]3 years ago
8 0
The answer would be c
VMariaS [17]3 years ago
5 0

Answer:

Step-by-step explanation:

5y-7y=-2y=-2(3)=-6

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A jug of milk holds 4 quarts. How many liters of milk does the jug hold? Round your answer to the nearest hundredth of a liter.
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Answer:

The answer is 3.785, but rounding it to the nearest hundredth is 3.68 or 3.79, depending on rather they wanted you to take the t and round up or just leave it off.

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3 years ago
14 divided by 2/7 how do I divide it and what is the anwer?
Anika [276]
Dividing by a fraction is like multiplying with the inverse.

So 14 / (2/7) is the same as 14 * 7/2, which is 49
7 0
3 years ago
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By rounding to 1 significant figure, estimate<br> 22.4 x 49.8
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Julio bought 4 pencils and 3 erasers for $0.37 and David paid $0.33 for 3 pencils and 4 erasers. What is the cost of one pencil?
grigory [225]

cost of pencil = x = 0.07

and cost of eraser = y = 0.03

Step-by-step explanation:

let cost of pencil = x

and cost of eraser = y

So, we have equations:

4x+3y=0.37\\3x+4y=0.33

Solving both equations to find value of x and y

Let:

4x+3y=0.37\,\,\,eq(1)\\3x+4y=0.33\,\,\,eq(2)

Multiply eq(1) with 4 and eq(2) with 3 and subtract

16x+12y=1.48\\9x+12y=0.99\\-\,\,\,-\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,-\\--------\\7x=0.49\\x=0.07

Putting value of x in equation 1:

4x+3y=0.37\\4(0.07)+3y=0.37\\0.28+3y=0.37\\3y=0.37-0.28\\3y=0.09\\y=0.03

So, x= 0.07 and  y = 0.03

cost of pencil = x = 0.07

and cost of eraser = y = 0.03

Keywords: System of equations

Learn more about system of equations at:

  • brainly.com/question/9045597
  • brainly.com/question/3739260
  • brainly.com/question/13168205

#learnwithBrainly

4 0
3 years ago
The sum of the measures of angle A and angle B equal 90 degrees. What is cos B​
stira [4]

Answer:I think it is 12/25

Step-by-step explanation:

4 0
3 years ago
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