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shtirl [24]
2 years ago
7

Solve the system of linear equations by substitution: (SHOW UR WORK) y=5x-6 y=4x-2

Mathematics
2 answers:
MArishka [77]2 years ago
5 0

Answer:

x = 4

y = 2

Step-by-step explanation:

1) y = 5x - 6

2) y = 4x - 2

sub 1 into 2

5x - 6 = 4x - 2

5x - 4x = 6 - 2

x = 4 ---> (3)

sub 3 into 2

y = (4 * 1) - 2

y = 4 - 2

y = 2

suter [353]2 years ago
4 0

Answer:

4

Step-by-step explanation:

Since they both equal y, they are both equivinlent

5x-6=4x-2

5x=4x+4

x=4

CHECK

20-6=16-2

14=14

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Find the measure of <7
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8 0
2 years ago
Suppose the heights of 18-year-old men are approximately normally distributed, with mean 65 inches and standard deviation 4 inch
Serhud [2]

Answer:

Step-by-step explanation:

<u>a)</u>

  • Given that ; X ~ N ( µ = 65 , σ = 4 )
  • P ( 64 < X < 66 )

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Hence, P ( -0.25 < Z < 0.25 ) = P ( 64 < X < 66 ) = P ( Z < 0.25 ) - P ( Z < -0.25 ) P ( 64 < X < 66 ) = 0.5987 - 0.4013

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b) X ~ N ( µ = 65 , σ = 4 )

  • P ( 64 < X < 66 )

From normal distribution application ;

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  • P ( 64 < X < 66 ) = P ( Z < 0.87 ) - P ( Z < -0.87 )
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c) From the values gotten for (a) and (b), it is indicative that the probability in part (b) is much higher because the standard deviation is smaller for the x distribution.

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3 years ago
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Answer:

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2×t

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