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slava [35]
3 years ago
15

Which answer represents the following conditional statement in shorthand

Mathematics
1 answer:
lianna [129]3 years ago
6 0
Pedro doesn't snore when he is awake
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-4x+y=3 and 2x-y=12. which of the options represents the resulting equation after an equivalent expression for yw is substituted
forsale [732]

Answer:

2x - (3 + 4x) = 12

x = -7.5

y = -27

Step-by-step explanation:

-4x + y = 3 (1)

2x - y = 12 (2)

From (1)

y = 3 + 4x

Substitute y = 3 + 4x into (2)

2x - y = 12 (2)

2x - (3 + 4x) = 12

2x - 3 - 4x = 12

2x - 4x = 12 + 3

-2x = 15

x = 15/-2

x = -7.5

Substitute x = -7.5 into (2)

2x - y = 12 (2)

2(-7.5) - y = 12

-15 - y = 12

-y = 12 + 15

- y = 27

y = -27

4 0
2 years ago
(8 - 20 divided by 2) Explain.
Norma-Jean [14]
8-20/2
8-(20/2)
8-(10)
-2

Answer: -2
3 0
2 years ago
Which of the following relations is a function? A.{ (-2, 4), (-1, 3), (5, 2), (1, 4) } B.{ (1, 7), (1, 8), (2, 7), (3, 8) } C.{
siniylev [52]
From the pairs of x,y, if the set has two "x" of the same value, that is, "x" repeats, or an x-repeat, then is NOT a function

so, the group that doesn't have any x-repeats, is a function, now let's check

\bf A.\{ (-2, 4), (-1, 3), (5, 2), (1, 4) \}\\\\
B.\{ (\boxed{1}, 7), (\boxed{1}, 8), (2, 7), (3, 8) \}\impliedby \textit{has one re}\textit{peat, no dice}\\\\
C.\{ (2, 4), (\boxed{4}, 6), (\boxed{4}, 8), (6, 4) \}\impliedby \textit{also has one re}\textit{peat, no dice}\\\\
D.\{ (\boxed{5}, 7), (6, 3), (8, 6), (\boxed{5}, 4) \}\impliedby \textit{same, has one re}\textit{peat, no dice}
3 0
3 years ago
0.17 =<br> 0.1090 =<br> ,0.050 =
Pavel [41]

Step-by-step explanation:

I have no idea what you are asking to do lol

8 0
3 years ago
2/4 is what pieces of a whole
rewona [7]
2/4 is half of a whole
8 0
3 years ago
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