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allochka39001 [22]
3 years ago
10

Combine like terms. Please help me.

Mathematics
1 answer:
My name is Ann [436]3 years ago
3 0

Answer:

15y^2-45

Step-by-step explanation:

5y^2+10y^2-45 = 15y^2-45

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2 years ago
Can someone help me solve this?
Dovator [93]

Answer:

5 felt pads.

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Step-by-step explanation:

Remark

  • The total number of items is 12
  • So let the felt sheets be x
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Equations and Solution

x + y = 12

Now the price is 7.75 that she has to pay for the 12 items. She wants to come back with 0 dollars.

0.5x + 0.75y = 7.75             Multiply this equation by 2

x + 1.5y = 15.50                    write the first equation underneath and subtract.

<u>x +    y =   12</u>

      .5y =  3                          Divide by 0.5

y = 3/0.5

y = 7

So she can get 7 cards.

x + y = 12

x + 7 = 12

x = 12 - 7

x = 5

So she can buy 5 felt pads.

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2 years ago
Find the arc length. Round the answer to two decimal places.
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Answer:

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A bakery sold 115 cupcakes in one day. The head baker predicted he would sell 95 cupcakes that day. What was the percent error o
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Solve inequality √(2−x) &lt; x.
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