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Vadim26 [7]
3 years ago
7

First person to answer CORRECTLY will get brainliest and extra points!!

Mathematics
1 answer:
SIZIF [17.4K]3 years ago
6 0

Answer:

y=15

Step-by-step explanation:

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Determine whether 81 − 49n4 is a difference of two squares. If so, factor it. If not, explain why.
Mumz [18]

We have

81-49n^4=9^2-(7n^2)^2

so this is indeed a difference of squares. Factorizing would give

81-49n^4=(9-7n^2)(9+7n^2)

making the answer D.

We can further factor the first term here and write

9-7n^2=3^2-(\sqrt 7\,n)^2=(3-\sqrt7\,n)(3+\sqrt7\,n)

but that's clearly out of the scope of this question.

7 0
3 years ago
A grocery store sells a bag 7 oranges for $2.66. if alexandra spent $3.42 on oranges how many did she buy
Murljashka [212]

Answer:

9 oranges

Step-by-step explanation:

7 for 2.66 is 38c for 1

7 0
3 years ago
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Look at the comparison below3/10 is this comparison statement correct
bixtya [17]
What statement? 3/10

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3 0
4 years ago
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Find the number of sides when:
svp [43]
((n-2)×180)/n = 156
(n-2)×180=156n
24n =360
n =15

360/n =36
n = 10

a)15 b)10
7 0
3 years ago
The table below shows the budget for the Smith family.
tiny-mole [99]

Answer:

415 300 213 3400 4500 = 8415

4500 450 415 300 215 3400 = 9280

8828 times 100 divided by 9280 =9 5.1293103448

95.1 percent (simplified)

Step-by-step explanation: income is income rescieved, id.k if income taxes is given to you but taxes is usually taken away from you, college savings, retirement saving and emergency funds are income, and living expenses is for living and you use it on what ever you want. mainly food.

8 0
3 years ago
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