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liraira [26]
3 years ago
8

Please help we don't have a math teacher right now and i'm struggling

Mathematics
1 answer:
aalyn [17]3 years ago
8 0

Answer:

Step-by-step:

2+3i

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(2x4+x3−4x2+3)+(4x4−2x3−x2+10x+2)
solniwko [45]
Im assuming there is exponents so if im assuming correctly, then the answer would be 6x^4 - x^3 - 5x^2 + 10x + 5 because you would combine like terms. 
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3 years ago
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Give 3 side lengths that could form a triangle
deff fn [24]

Answer:

3, 4, 5

Step-by-step explanation:

7 0
2 years ago
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Simplify -9(1-10n) - 2(3n+9)
agasfer [191]

Answer:

3 (28 n - 9)

Step-by-step explanation:

Simplify the following:

-9 (1 - 10 n) - 2 (3 n + 9)

-9 (1 - 10 n) = 90 n - 9:

90 n - 9 - 2 (3 n + 9)

-2 (3 n + 9) = -6 n - 18:

90 n + -6 n - 18 - 9

Grouping like terms, 90 n - 6 n - 18 - 9 = (90 n - 6 n) + (-9 - 18):

(90 n - 6 n) + (-9 - 18)

90 n - 6 n = 84 n:

84 n + (-9 - 18)

-9 - 18 = -27:

84 n + -27

Factor 3 out of 84 n - 27:

Answer: 3 (28 n - 9)

4 0
2 years ago
Lisa purchased a hat for $10, a purse for $20, and a book for $23. The sales tax rate was 7.2 percent. What was the total amount
shusha [124]
10+ 20+ 23 = 53
53 x 0.072 = 3.816
53 + 3.82 =
$56.82
4 0
3 years ago
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Can someone help me PLEAS
slavikrds [6]

Answer:

D

Step-by-step explanation:

An irrational number is a number that cannot be expressed as a fraction for any integers and. . Irrational numbers have decimal expansions that neither terminate nor become periodic

6 0
2 years ago
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