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laiz [17]
3 years ago
6

Which of the following is the solution set to the inequality −25x+14>20? Select one: A. x < -64 B. x > -64 C. x < -1

5 D. x > -15
Mathematics
1 answer:
Sindrei [870]3 years ago
8 0

Answer:

x< -0.24

Step-by-step explanation:

So this is going to sound stupid, but I got x< -0.24 which is just not an option, but this is how I got it...

-25x+14>20

subtract 14 from each side

-25x>6

divide each side by -25

x< -0.24

I switch the way the sign was facing bc I divided by a negative.

Now I know that this must be wrong, but it makes the most sense because I am pretty sure I did all of the math right. Sorry this probably didnt help , but I did a lot of work to try and get the right answer, so Im not putting that work to waste

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5x +7 y=-17<br> 4x – 3y = -5<br> Substitute.
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Answer:

(x,y) = (-2, -1)

Step-by-step explanation:

We start off by substituting the value of "x".

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We then solve 55(-\frac{5}{4}+\frac{3}{4}y ) +7y= -17

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\left \{ {{-17=-17} \atop {-5=-5}} \right. This works.

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3 years ago
A line of best fit predicts that when x equals 28 y will equal 27.255 but y actually equals 26 what is the residual in this case
Kobotan [32]

Answer:

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Step-by-step explanation:

We are tasked to solve for the residual value given that when x equals 29, y will be equals to 27.255. But, when it is tested, y actual value is 26. The formula in solving residual is shown below:

Residual value = Observed value - predicted value

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Step-by-step explanation:

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