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Molodets [167]
3 years ago
14

Simplify a^2+ab-2b^2/a^2-2ab-3b^2

Mathematics
2 answers:
Ahat [919]3 years ago
8 0

a4b2 + 2a4 - 12a3b - 2ab3 - 4b2  

 ———————————————————————————————

               2a2              

klasskru [66]3 years ago
5 0

Simplify a^2+ab-2b^2/a^2-2ab-3b^2


Answer: -(2 b^2)/a^2 + a^2 - a b - 3 b^2

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Answer:

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Step-by-step explanation:

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3 years ago
What is the product of (-1/4)x(-3/7)
Oksana_A [137]

Answer:  Multiply from left to right.

(-3/4)(-4/7)(-2/3)

3/7(-2/3)

-2/7

Step-by-step explanation:

7 0
3 years ago
A man invests a total of $9,493in two savings accounts. One account yields 9% simple interest and the other 10% simple interest.
Tju [1.3M]

$ 1850 was invested in 9% account

<u>Solution:</u>

Given that  

Total amount invested by man in two saving accounts = $9493

Simple interest on one account =9%

Simple interest on second account = 10%

Total interest earned = $930.80

Need to determine amount invested in 9 % account.

Let assume amount invested in account where Simple Interest is 9% = x

And assume amount invested in account where Simple Interest is 10% = y

As total amount invested in two accounts is $9493

=> x + y = 9493      

=> y = 9493 - x                              ------(1)

\text { Simple Interest }=\frac{\text { Amount Invested } \times \text {rate of interest } \times \text {time}}{100}

\begin{array}{l}{\text { Simple interest when rate of interest is } 9 \%=\frac{x \times 9 \times 1}{100}=\frac{9 x}{100}} \\\\ {\text { Simple interest when rate of interest is } 10 \%=\frac{y \times 10 \times 1}{100}=\frac{10 y}{100}}\end{array}

As total interest earned = $930.80

\begin{array}{l}{\Rightarrow \frac{9 x}{100}+\frac{10 y}{100}=930.80} \\\\ {\Rightarrow 9 x+10 y=930.80 \times 100} \\\\ {\Rightarrow 9 x+10 y=93080}\end{array}

On substituting value of y from equation(1) in above equation , we get

9x + 10 (9493 – x) = 93080

=> 9x  + 94930 – 10x = 93080

=> -x = 93080 – 94930

=> -x = -1850

=> x = 1850  

Amount invested in account where Simple Interest is 9% = x  = $1850

Hence $1850 was invested in 9% account.

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3 years ago
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vladimir2022 [97]

Answer:

7 minutes

Step-by-step explanation:

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