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Soloha48 [4]
4 years ago
9

Evaluate -2a^2 if a = -5/2 -25 -12 1/2 25 12 1/2

Mathematics
1 answer:
OLEGan [10]4 years ago
5 0
-12.5 or -12 1/2 so easy
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Plz help me well mark brainliest if correct....??
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Table B

Step-by-step explanation:

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3 years ago
How is the value of 4 in 864 related to the value of 4 in 846
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cestrela7 [59]

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3 years ago
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What is the best estimate for the number of people in line at 7.A.M
Keith_Richards [23]

We have been given the equation

y=-5.131x^2+31.821x-3.333

It represents the number of people standing to catch a commuter train x hours after 5 A.M.

Now, in order to find the number of people in line at 7 a.m. , we need to substitute x= 2 in the above equation.

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Therefore, the number of people in the line at 7 a.m. is 40

D id the correct option.

5 0
3 years ago
If x=-7 and y=4 what would x^2-3xy=
Kruka [31]

Answer:

While x = -7 and y = 4, x² - 3xy = 133.

Step-by-step explanation:

x² - 3xy

Substitute variables.

(-7)² - 3(-7)(4)

Square -7 remembering that (-x)² = x².

49 - 3(-7)(4)

Multiply -7 and 4.

49 - 3(-28)

Multiply -3 and -28.

49 + 84

Add 49 and 84.

133

3 0
2 years ago
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