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leonid [27]
3 years ago
5

4n+9=6<br />What is the value of n?

Mathematics
1 answer:
kvv77 [185]3 years ago
7 0
You would first subtract 9 and then then get 4n=-3 then you would divide by four and get -3/4 if you wanted to divide further you would get a decimal answer.

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Solve the system using substitution. -2x+5y=19<br> 3x-4=y
omeli [17]

Answer:

answer is x=3 and y=5.... so it is (3,5)

Step-by-step explanation:

you want to combine them so y=3x-4 so subsitute y

-2x+5(3x-4)=19

-2x+15x-20=19

            +20   +20

13x=39

---    ---

13     13

x=3

now subsitute 3 into x into any problem...

3(3)-4=y

9-4=y

and 9-4 is 5 so it is...

(3,5)

pls give me brainliest

4 0
3 years ago
Can someone please help me with this. will give brainliest. :)​
ivanzaharov [21]

Answer:

I am pretty sure the answer is A

4 0
2 years ago
If a and B are the zeros of the quadratic polynomial f(x) = x2- 5x + 4 find the value of 1/a+1/b-2ab
bearhunter [10]

Answer:

<h2>-27/4</h2>

Step-by-step explanation:

Given the quadratic polynomial given as g(x) = x²- 5x + 4, the zeros of the quadratic polynomial occurs at g(x) = 0 such that x²- 5x + 4 = 0.

Factorizing the resulting equation to get the roots

x²- 5x + 4 = 0

(x²- x)-(4 x + 4) = 0

x(x-1)-4(x-1) = 0

(x-1)(x-4) = 0

x-1 = 0 and x-4 = 0

x = 1 and x = 4

Since a and b are known to be the root then we can say a = 1 and b =4

Substituting the given values into the equation  1/a+1/b-2 ab , we will have;

= 1/1 + 1/4 - 2*1*4

= 1 + 1/4 - 8

= 5/4 - 8

Find the Lowest common multiple

= (5-32)/4

= -27/4

<em>Hence the required value is -27/4</em>

5 0
3 years ago
Find the value of f(x) if f(x)= 14x-12 when x=16​
Papessa [141]

Step-by-step explanation:

14(16) - 12 = 224 - 12 = 212

3 0
2 years ago
The original cost of Sam’s investment is $10,000. After liquidating the investment, Sam calculated his real return to be $10,700
OverLord2011 [107]

Answer:

Return on investment (ROI) = 7%

Step-by-step explanation:

Given:

Amount invested = $10,000

Total amount get (refund) = $10,700

Find:

Return on investment (ROI) = ?

Computation:

Amount Return = Total amount get (refund) - Amount invested

Amount Return = $10,700 - $10,000

Amount Return = $700

Return\ on\ investment \ (ROI) = [\frac{Amount\ Return}{Amount\ invested} ]100\\\\Return\ on\ investment \ (ROI) = [\frac{700}{10,000} ]100 \\\\ Return\ on\ investment \ (ROI) =7

Return on investment (ROI) = 7%

3 0
2 years ago
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