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irina1246 [14]
3 years ago
7

As part of a science experiment, Sam recorded the four values shown in the table, but one of them got smudged on his paper. He r

emembers that the sum of the trials was −1. What was the value that was smudged?
Trials
−9
12
(smudged)
−8

A) 2

B) −2

C) −4

D) 4
Mathematics
1 answer:
Readme [11.4K]3 years ago
3 0

Answer:

C

Step-by-step explanation:

ok so sam started with 0 and got -9 then he got 12 then the next known number is -8 so those three numbers together are -5 and the end result was -1 so -1 minus -5 is -4 therefore the anser is C

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Answer:

Infinitely many solutions

Step-by-step explanation:

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infinitely many solutions

6 0
3 years ago
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6 0
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Firdavs [7]
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5 0
2 years ago
(3a+2.5b)^2=9a^2+6.25b^2+*<br> Please help before Thursday
Anon25 [30]

Step-by-step explanation:

We have (x + y)² = (x + y)(x + y) = x² + 2xy + y².

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5 0
3 years ago
30 in
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Just add them all up that’s it and you will get 20
8 0
2 years ago
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