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vlada-n [284]
3 years ago
14

Solve the system using either the substitution or the elimination method X^2-y=-2 -x+y=4

Mathematics
2 answers:
GaryK [48]3 years ago
6 0
I used the substitution method and got (2,6) and (-1,3) 
Neporo4naja [7]3 years ago
6 0
Hello here is a solution :

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WRITE A TWO COLUMN PROOF for number 19!
Fittoniya [83]

Answer:

Step-by-step explanation:

The answer is 19

5 0
3 years ago
translate this verbal expression to a algebraic expression eight more than six times a number added to one more than nine times
34kurt
I will right it sideways. you can use this strategy later on if you would like. I put (parentheses) around what is optional to include. the = to the left of the second word number is to show that the number is equal. if there are two different variables you would put a crossed out equal sign.
_______________
eight= 8 l
more than= +
six= 6
times= x
(a)number= n l
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added (to)= +
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one= 1 l
more than= +
= number= n l
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(I tried to do parentheses)

then, you rewrite what you wrote beside the words!

(8+6n)+(1+n)

that is your equation!
7 0
3 years ago
Choose the option that best describes what it means to be 60% done with a project.
Anit [1.1K]
B. There are 10Things to do to finish the project.and you have done 6 of them
8 0
3 years ago
What will be the value of the 22nd coefficient of a binomial raised to the power 25​
Alona [7]

Step-by-step answer:

We are looking at the coefficient of the 22nd term of (x+y)^25.

Following the sequence, first term is x^0y^25, second term is x^1y^24, third term is x^2y^23...and so on,  22nd term is x^21y^4.

The twenty-second term of (x+y)^25 is given by the binomial theorem as

( 25!/(21!4!) ) x^21*y^4

=25*24*23*22/4! x^21y^4

= 12650 x^21 y^4

The coefficient required is therefore 12650, for a binomial with unit valued coefficients.

For other binomials, substitute the values for x and y and expand accordingly.

Question would have been more clearly stated if the actual binomial was given, as commented above.

4 0
3 years ago
Find the residual values, and use the graphing calculator tool to make a residual plot. A 4-column table with 5 rows. The first
Svetlanka [38]

The best answer from the options that proves that the residual plot shows that the line of best fit is appropriate for the data is: ( Statement 1 ) Yes, because the points have no clear pattern

X         Given     Predicted     Residual value

1            3.5           4.06             -0.56

2           2.3           2.09             0.21

3            1.1            0.12               0.98

4           2.2           -1.85              4.05

5          -4.1            -3.82            -0.28

The residual value is calculated as follows using this formula: ( Given - predicted )

1) ( 3.5 - 4.06 ) = -0.56

2) ( 2.3 - 2.09 ) = 0.21

3) ( 1.1 - 0.12 ) = 0.98

4) (2.2 - (-1.85) = 4.05

5) ( -4.1 - (-3.82) = -0.28

Residual values are the difference between the given values and the predicted values in a given data set and the residual plot is used to represent these values .

attached below is the residual plot of the data set

hence we can conclude from the residual plot attached below that the line of best fit is appropriate for the data because the points have no clear pattern ( i.e. scattered )

learn more about residual plots : brainly.com/question/16821224

5 0
2 years ago
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