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Margaret [11]
3 years ago
15

Which of the following expressions is equal to -3X2-27?

Mathematics
1 answer:
ale4655 [162]3 years ago
8 0

Answer: B

Step-by-step explanation:

-3x^2-9xi+9ix-27

-3x^2-27

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Evaluate −3w − 6p for w=2 and p = −7
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-3w-6p when w=2 and p=-7

-3(2)-6(-7)

= -6 + 42

= 36

7 0
3 years ago
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Can somebody help me with these 2 questions and show work ?? :)
777dan777 [17]

5. A. (4, -2)

6. C. (x, y) — (x, -y + 5)

Step-by-step explanation:

5. For the formula y = x, the x and y coordinates get swapped.

M = (-2, 4) — M’ = (4, -2)

6. If the coordinates get reflected across the x-axis, the y coordinates become negative.

(x, y) — (x, -y)

Now that the coordinates are reflected, you go 5 units up (+ 5) to get to the reflection of the coordinates if it was 5 units down before it reflected across the x-axis (- 5).

Ex. 1, 6 gets reflected across the x-axis and moved 5 units up. It’s reflection would be equivalent to (1, -1) because it moved 5 units down (1, 1) then reflected across the x-axis (1, -1).

(x, y - 5) reflected across the x-axis is equivalent to (x, -y + 5)

8 0
3 years ago
A study has demonstrated that the more television a person watches, the lower that person’s level of physical fitness. However,
Murljashka [212]

Answer: D

Step-by-step explanation:

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Please answer this question correctly :)
Vlada [557]
The answer for this problem is 70
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What is the slope of a line that passes through the points. (-2, 3) and (4, -12)?
Crank

Answer:

5/2

Step-by-step explanation:

5/2

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