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vampirchik [111]
3 years ago
11

What is 8b - ab + 7a subtracted from 3a - 9ab + b? ​

Mathematics
2 answers:
laiz [17]3 years ago
5 0

Answer:

3a-9ab+b-8b-ab+7a

3a+7a-9ab-ab+b-8b

10a-10ab-7b

Step-by-step explanation:

nekit [7.7K]3 years ago
5 0

Answer:

10a-10ab-7b

Step-by-step explanation:

i dont feel like putting the steps but ik this is correct

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When she graduates college Linda will owe 43,000 in student loans. The interest rate on the federal Liana is 4.5 % and the rate
Amanda [17]

Answer:

federal loan amount = $29,000

private loan amount = $14,000

Step-by-step explanation:

Total amount is 43000

Let amount in federal be f

and

amount in private be 43,000 - f

Interest rate at federal is 0.045

Interest rate at private is 0.02

THus, we can form the equation shown below and solve:

f(0.045) + (43,000 - f)(0.02) = 1585

0.045f +860 - 0.02f = 1585

0.025f = 725

f = 29,000

and on private = 43,000 - 29,000 = 14,000

Hence

federal loan amount = $29,000

private loan amount = $14,000

6 0
3 years ago
A builder purchases 600 bricks for a new residential construction. The dimensions of each brick are 5.1 cm by 10.2 cm by 20.3 cm
Blababa [14]
<h3>Answer:</h3>

1165.83 kg

<h3>Explanation:</h3>

The total mass is the product of volume of one brick, the number of bricks, and the density. For this problem, it is convenient to use dimensions in meters.

(0.051\,m)(0.102\,m)(0.203\,m)(600)\dfrac{1840\,kg}{m^3}=(0.6336036\,m^3)\dfrac{1840\,kg}{m^3}\\\\=1165.83\,kg

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Step-by-step explanation:

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1/2 of j is the same as j ÷ 2

14 ÷ 2 = 7

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2 years ago
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