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Anvisha [2.4K]
3 years ago
14

Expand and simplify 9 (x-y)^2-9(x+y)(x-y)

Mathematics
1 answer:
yuradex [85]3 years ago
5 0

To simplify the problem it would be: -18xy+18y^2

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Does anyone know how to do this?
KonstantinChe [14]
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3 0
3 years ago
9.) In a state with a sales tax of 7%, Hernando
alex41 [277]

Answer:

Final price = $79.16

Step-by-step explanation:

Given that:

Sales tax in the state  = 7%

Amount spent by Hernando = $73.98

Amount of sales tax = 7% of 73.98

Amount of sales tax = \frac{7}{100}*73.98

Amount of sales tax = 0.07 * 73.98

Amount of sales tax = $5.18

Final price = 73.98 + 5.18 = $79.16

Hence,

Final price = $79.16

5 0
3 years ago
Y is 1 1/3 times x.
ValentinkaMS [17]

Answer:

B. 4:3

Step-by-step explanation:

Note: I use the '&' mark to symbolize mixed fractions, since it's easy to mistake the whole number for part of the numerator. Don't do this for assignments, as it's not proper.

1 & 1/3 = 4/3

Thus, the answer is B. 4:3.

4 0
3 years ago
Subtract. Express your answer in lowest terms. 8 1/2 - 2 1/6
krok68 [10]

Answer:

6 1/3

Step-by-step explanation:

8 1/2 - 2 1/6

you need to get a common denominator of 6

1/2 * 3/3 = 3/6



  8  3/6

-2   1/6

-----------

 6  2/6

we can simplify 2/6  by dividing top and bottom by 2

6 2/6 = 6 1/3

8 0
3 years ago
Read 2 more answers
Solve 3x + k = cfor x.
Ghella [55]
First, subtract k from both sides. That means c - k is in the left side and 3x is on the right. Then, divide by 3 on both sides. So, the answer is x = (c - k) / 3.
7 0
4 years ago
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