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slamgirl [31]
3 years ago
6

What is the coefficient of the variable in the expression 4 − 3x − 7 + 6?

Mathematics
2 answers:
GaryK [48]3 years ago
5 0
A coefficient is the number directly in front of the variable, aka the number being multiplied with the variable. In this case it's -3.
dezoksy [38]3 years ago
5 0

Answer:

the coefficient is -3

Step-by-step explanation:

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Please help!<br><br> If sin(xº)=cos(yº) find k if x=2k+3 and y=6k+7
USPshnik [31]

answer

10

step-by-step explanation

the equation given is sin(x) = cos(y) with x = 2k + 3 and y = 6k + 7

substitute in 2k+ 3 for x in sin(x) and substitute in 6k + 7 for y in cos(y)

sin(x) = cos(y)

sin(2k + 3) = cos(6k + 7)

we know that sin(x) = cos(90 -x)

sin(2k + 3)

= cos(90 - (2k + 3) )

= cos(90 - 2k - 3)

= cos(87 - 2k)

substitute this into the equation sin(2k + 3) = cos(6k + 7)

sin(2k + 3) = cos(6k + 7)

cos(87 - 2k) = cos(6k + 7)

87 - 2k = 6k +7

80 = 8k

k = 10

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