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finlep [7]
2 years ago
14

(_+10)(_+-1)= 11x^2+17x-10 in factored form

Mathematics
1 answer:
Sever21 [200]2 years ago
4 0

Answer:

The factored form will be:

11x^2+17x-10=\left(11x-5\right)\left(x+2\right)

Step-by-step explanation:

Given the expression

11x^2+17x-10

Breaking the expression into groups

=\left(11x^2-5x\right)+\left(22x-10\right)

  • factoring out x from 11x²-5x

11x²-5x = x(11-5)

  • factoring out 2 from 22x-10

22x-10 = 2(11x-5)

so the expression becomes

=x\left(11x-5\right)+2\left(11x-5\right)

factoring out common term 11x-5

=\left(11x-5\right)\left(x+2\right)

Therefore, the factored form will be:

11x^2+17x-10=\left(11x-5\right)\left(x+2\right)

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Find the range of the function:<br><br> f(x) = x + 3, for x ≠ 1
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Answer:

All Real Numbers except for 4

Step-by-step explanation:

Objective: Specify domain and range of a function.

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3 years ago
There are nickels, dimes, quarters in a large piggy bank, for every 2 nickels there are 3 dimes, for every 2 dimes there are 5 q
Alex

There are 80 nickels and 120 dimes and 300 quarters in piggy bank

<em><u>Solution:</u></em>

Given that,

For every 2 nickels there are 3 dimes ,

So, ratio of nickel to dime will be 2 : 3

Also for every 2 dimes there are 5 quarters

So, ratio of dime to quarters is 2 : 5

Let us first find the ratio of nickles to dimes to quarters

nickel : dime = 2 : 3

dime : quarters = 2 : 5

\frac{nickel}{dime} = \frac{2}{3}

nickel = \frac{2}{3} dime

\frac{dime}{quarter} = \frac{2}{5}

quarter = \frac{5}{2}dime

So,

nickel : dime : quarter = \frac{2}{3}dime : dime : \frac{5}{2}dime\\\\nickel : dime : quarter = \frac{2}{3} : 1 : \frac{5}{2}\\\\nickel : dime : quarter = 4 : 6 : 15

Thus nickel : dime : quarters = 4 : 6 : 15

Now, let the number of nickel be 4x

Let the number of dimes be 6x

Let the number of quarters be 15x

From given question,

There are 500 coins in all.

number of nickel + number of dimes + number of quarters = 500

4x + 6x + 15x = 500

25x = 500

x = 20

Thus,

number of nickel = 4x = 4(20) = 80

number of dimes = 6x  = 6(20) = 120

number of quarters = 15x = 15(20) = 300

Thus there are 80 nickels and 120 dimes and 300 quarters in piggy bank    

3 0
3 years ago
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