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Pani-rosa [81]
2 years ago
15

How to add/subtract like radical expressions?​

Mathematics
1 answer:
N76 [4]2 years ago
4 0

9514 1404 393

Explanation:

"Like" radicals can be added and subtracted in the same way any like terms can be combined. It can be helpful to simplify the radical as much as possible so that it can be seen whether the radicals are "like" or not.

<u>Examples</u>:

  √2 +√3 . . . . cannot be combined

  √2 +√8 = √2 +2√2 = 3√2 . . . . the simplified radicals can be combined

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Explain how to use the sales tax rate to determine an item's total cost.
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Answer:

  A. Multiply the purchase price by the tax rate. Then add the result to the purchase price.

Step-by-step explanation:

The amount of tax is found by multiplying the taxed amount by the tax rate. The customer generally pays the sales tax, so the amount the customer will pay will be the sum of the purchase price and the tax.

7 0
2 years ago
What is the value of y?
kherson [118]

Answer:

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Step-by-step explanation:

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3 years ago
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3 years ago
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Scrat [10]

Answer:

y = 6 + 4x

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Step-by-step explanation:

Hi there!

Let x = the number of years that pass

Let y = the height of the tree (ft)

We're given that the 6-foot tree grows at a rate of 4 ft per year. This means that the height of the tree will be equal to 6 ft, the original height, plus another 4 ft every year that passes.

Height of tree = 6 feet + 4 feet × number of years that pass

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To solve for how tall the tree would be 4 years after Dina plants it, replace x with 4, since 4 years have passed:

y = 6 + 4(4)

y = 6 + 16

y = 22

Therefore, the tree would be 22 ft tall.

I hope this helps!

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