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vredina [299]
3 years ago
12

Which function represents the data in the table?

Mathematics
1 answer:
77julia77 [94]3 years ago
3 0

Answer:

Pretty sure it's D

Step-by-step explanation:

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X-5y-z=-20<br><br>-2x-y-6z=25<br><br>-x-4y-z=-15<br>Solve by elimination
Tju [1.3M]

Answer:

x = 0

y = 5

z = -5.

Step-by-step explanation:

X-5y-z=-20

-2x-y-6z=25

-x-4y-z=-15

Add equation 1 and 3:

-9y - 2z = -35 .......... A

Multiply the first equation by 2:

2x - 10y - 2z = -40

Now add this to equation 2:

-11y -8z = -15.............B

Now multiply equation A by -4:

36y + 8x = 140.........C

Add equations B and C:

25y = 125

y = 5.

Substitute for y in equation A:

-9*5 - 2z = -35

2z = -45 + 35 = - 10

z = -5.

Now find x by substituting for y and z in the first equation:

x - 5(5) - (-5) = -20

x - 20 = -20

x = 0.

6 0
3 years ago
9/15+2/5 need help adding fractions
GenaCL600 [577]

Answer:

15/15 aka 1

Step-by-step explanation:

9/15 and 2/5

keep the 9/15 and then denominator the bottom number has to be the same as the first one so multiply 5 times 3 to get 15 whatever you do to the bottom you have to do to the top so 2 times 3 equals 6.

9/15 and 6/15

9+6 equals 15

15/15 which then equals 1

4 0
3 years ago
Read 2 more answers
F r e e points!!!!!!!!!!!!!!!!!
inn [45]

Answer:

gang

Step-by-step explanation:

8 0
3 years ago
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What is the discontinuity of the function f(x) = the quantity of x squared minus 3 x minus 28, all over x plus 4?
asambeis [7]
You get discontinuity when in this function you divide by 0. You will divide by 0 if x+4 = 0. That means that x = -4

y value for this example doesn't matter because for x = -4 you will have discontinuity. Since the only answer that has -4 as x value is D, that has to be solution.

Answer is D
4 0
3 years ago
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Combining like terms <br><br> simplify each expression<br> -9k + 8k
Lady_Fox [76]
(-9k+8k)*-1
9k-8k=1k
1k*-1=-1k

your answer is -1k
8 0
3 years ago
Read 2 more answers
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