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Bad White [126]
3 years ago
14

Evaluate 9x + 3xy − 2 for x = 3 and y = −3.

Mathematics
1 answer:
klemol [59]3 years ago
5 0

Answer:

- 2

Step-by-step explanation:

Given

9x + 3xy - 2

Substitute x = 3 and y = - 3 into the expression

= 9(3) + 3(3)(- 3) - 2

= 27 - 27 - 2 = - 2

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Which ordered pair does NOT lie on the graph of h(x)=-2x + 7
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Answer:

A

Step-by-step explanation:

To determine if the ordered pairs lie on the graph, substitute the x- coordinate of the point into the equation and if the value agrees with the y- coordinate of the point then it lies on the graph

A

x = - 2 : y = -2(- 2) + 7 = 4 + 7 = 11 ≠ 3 ← (-2,3) not on graph

B

x = - 1 : y = - 2(- 1) + 7 = 2 + 7 = 9 ← (- 1, 9) lies on graph

C

x = 3 : y = -2(3) + 7 = - 6 + 7 = 1 ← (3, 1) lies on graph

D

x = 4 : y = - 2(4) + 7 = - 8 + 7 = - 1 ← (4, - 1) lies on graph

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3 years ago
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Multiply 20 by 5 and you get 100, please tell if this is what you wanted!
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And finally the solution for: What number is 30 less than 10? is -20 

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N= -4

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