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Anestetic [448]
3 years ago
9

Which numbers are rational And which are irrational

Mathematics
1 answer:
Fittoniya [83]3 years ago
8 0

Answer:

Irrational, rational, rational, rational, irrational

Step-by-step explanation:

Pi is irrational, so anything multiplied by it is irrational also. The square root of 25 is just 5 or -5, both of which are rational. 17/12 is a fraction of integers so it's rational. 41.4141... is a repeating decimal so it is rational. And the square root of 7 is a random decimal, so it is irrational.

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Rewrite the expression below.<br><br> -2a( a + b - 5)+ 3 (-5a + 2b) +b (6a + b - 8)
Paul [167]

Answer:

b^2 + 4 a b - 2 b - 2 a^2 + -5 a

Step-by-step explanation:

Simplify the following:

-2 a (a + b - 5) + 3 (2 b - 5 a) + b (6 a + b - 8)

-2 a (-5 + a + b) = 10 a - 2 a^2 - 2 a b:

10 a - 2 a^2 - 2 a b + 3 (2 b - 5 a) + b (6 a + b - 8)

3 (2 b - 5 a) = 6 b - 15 a:

10 a - 2 a^2 - 2 a b + 6 b - 15 a + b (6 a + b - 8)

b (-8 + 6 a + b) = -8 b + 6 a b + b^2:

10 a - 2 a^2 - 2 a b - 15 a + 6 b + -8 b + 6 a b + b^2

Grouping like terms, 10 a - 2 a^2 - 2 a b - 15 a + 6 b - 8 b + 6 a b + b^2 = b^2 + (6 a b - 2 a b) + (6 b - 8 b) - 2 a^2 + (10 a - 15 a):

b^2 + (6 a b - 2 a b) + (6 b - 8 b) - 2 a^2 + (10 a - 15 a)

a b 6 + a b (-2) = 4 a b:

b^2 + 4 a b + (6 b - 8 b) - 2 a^2 + (10 a - 15 a)

6 b - 8 b = -2 b:

b^2 + 4 a b + -2 b - 2 a^2 + (10 a - 15 a)

10 a - 15 a = -5 a:

Answer:  b^2 + 4 a b - 2 b - 2 a^2 + -5 a

8 0
3 years ago
sherry had $125.05 in her checking account She made deposit of $28.35 and $78.88 how much money was in sherry account after the
Doss [256]

Answer:

$17.82

Step-by-step explanation:

125.05  - 28.35 = 96.7 \\ 96.7 - 78.88 = 17.82

4 0
4 years ago
Read 2 more answers
Which polygons are congruent? Select each correct answer. a rhombus with all sides marked 15 units long. a square with two sides
Andre45 [30]
Here is your answer 


Good luck

3 0
4 years ago
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Kyle and Linda are married with two children at home and a mortgage. Kyle's net pay per year is $32,000 and Linda's is $48,000.
alexandr1967 [171]

Answer:

D.

Their plan for protecting their assets. They should have life insurance on Linda.

Step-by-step explanation:

Their plan for protecting their assets. They should have life insurance on Linda.

3 0
3 years ago
Due today answer ASAP
Anestetic [448]

Answer:

1) a= 12.5 ml

2)b= 9.8 mm

3)c= 20.56 yd

4)d= 4.8 ft

5)e= 9.6 yd

6)f= 12.91km

4 0
3 years ago
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