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mariarad [96]
2 years ago
15

Evaluate the expression when c= -7 and x=7. 3x-C

Mathematics
1 answer:
elena55 [62]2 years ago
4 0
C=-7
x= 7
3.7-(-7) =28
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Divide x^4-x^3+4x+2 by x^2+3
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Answer:

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2 years ago
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yulyashka [42]

Answer:

x=-10, y=-20

Step-by-step explanation:

Since both 2x and 3x+10 equals y, they equal each other.

2x = 3x + 10

x = -10

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3 years ago
The following table shows the​ weights, in hundreds of​ pounds, for six selected cars. Also shown is the corresponding fuel​ eff
Reika [66]

Answer:

Step-by-step explanation:

Given is a table showing  the​ weights, in hundreds of​ pounds, for six selected cars. Also shown is the corresponding fuel​ efficiency, in miles per gallon​ (mpg), for the car in city driving.

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X Y    

28 20 784 560 400

3 22 9 66 484

35 19 1225 665 361

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Variance   112.4722222  1.805555556

Covariance -553.8611111    

     

     

r -0.341120235    

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The correlation coefficient between the weight of a car and the fuel efficiency is -0.341

8 0
3 years ago
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Answer:

D. (17,-1)

Step-by-step explanation:

We'll start by canceling out x. To do so, multiple the first equation by -1

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This gives us:

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Add the equations together:

→ 5y = -15

→ y = -1

Plug in y = -1 into an equation:

→ x + 3(-1) = 14

→ x - 3 = 14

→ x = 17

(17,-1)

Hope this helps!

4 0
2 years ago
Can someone answer this? Thanks a lot
Komok [63]

Answer:

Step-by-step explanation:

Use math-way go quick and easy answers without step by step explanations, and use math-soup-calculator for step by step explanation

3 0
3 years ago
Read 2 more answers
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