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Ipatiy [6.2K]
4 years ago
6

Linear system please help 45 point * please please please help

Mathematics
2 answers:
Nikolay [14]4 years ago
5 0

Answer:

a) elimination method

b) substitution method

c) substitution method

Step-by-step explanation:

For the first part we can elimate the y variable by subtracting the equations. We can then find the value of x.

For the second part we can substitute y as 2x+5 in the second equation and solve for x.

For the third part we can substitute y as 4x+3 in the first equation and solve for x.

tino4ka555 [31]4 years ago
3 0

Answer:

a.Elimination method

b.substitution method

c.substitution method.

Step-by-step explanation:

the reason I'm going to use elimination for the first one a. its because we were given two equations with coefficients and to solve for them, we need to eliminate one of the variables and solve for the other then use the answer for the non eliminated variable to solve for the eliminated variable and its quite easy to do so.

for b and c. I choose to use substitution method to answer the equations because the y equation was given to us. The easiest thing to do is just to substitute Y equation in the given equation and solve for your variables.

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Answer:

Your answer would be number 4, "A and D"

Step-by-step explanation:

I already know that if you multiply a number by less than 1 it will give a product less than the original number so that makes B and C not the correct answer leaving a and d

I hope this helps :D

8 0
3 years ago
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Point R on the coordinate grid below shows the location of a car in a parking lot. A second car needs to park 5 units above R to
yawa3891 [41]

Answer: -4 and 2

Step-by-step explanation:

negative 4 and positive 2 is the answer

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3 years ago
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Hese are the values in Paul’s data set.
andrew-mc [135]
Answer: See description below.

The residuals are the differences between the predicted values and the actual values. You will need to make a scatter plot of each difference.

Here are the five points that you will need to plot:
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8 0
3 years ago
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Makovka662 [10]

Answer:

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3 years ago
Solve for x in the equation X^2 - 8X + 41= 0
BaLLatris [955]

Answer:

The equation has two solutions for x:

<u>x₁ = (8 + 10i)/2</u>

<u>x₂ = (8 - 10i)/2</u>

Step-by-step explanation:

Let's use the quadratic formula for solving for x in the equation:

X^2 - 8X + 41= 0

x² - 8x + 41 = 0

Let's recall that the quadratic formula is:

x = -b +/- (√b² - 4ac)/2a

Replacing with the real values, we have:

x = 8 +/-  (√-8² - 4 * 1 * 41)/2 * 1

x = 8 +/-  (√64 - 164)/2

x = 8 +/-  (√-100)/2

x = 8 +/-  (√-1 *100)/2

Let's recall that √-1 = i

x = 8 +/- 10i/2

<u>x₁ = (8 + 10i)/2</u>

<u>x₂ = (8 - 10i)/2</u>

8 0
3 years ago
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