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andrew-mc [135]
3 years ago
11

X-4y=-12 and 5x=20y+60 How do you solve this

Mathematics
2 answers:
Savatey [412]3 years ago
6 0
Here is the answers.

Nookie1986 [14]3 years ago
6 0

Answer:

You must turn the variables, or the "x" into a number to make the numbers on the left equal the numbers on the right.

Step-by-step explanation:

In order to solve these problems, you must replace the variable with a number to have the equation on the left equal what is on the right.

Equation 1:

x - 4y = -12 <----- This is the original problem.

-8 - 4y = -12 <----- Replace the variable.

-12y = -12 <----- This is a true statement.

Equation 2:

  5x=20y+60 <----- This is the original problem.

5(16) =20y+60 <----- Replace the variable/Do the addition.

80 = 80y <------ This is a true statement.

Hope this helps! :D

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A poll reported that 66% of adults were satisfied with the job the major airlines were doing. Suppose 20 adults are selected at
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Answer:

0.5640

Step-by-step explanation:

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a)

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b)

P( x < 3) = P(x=0)+P(x=1)+P(x=2)

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c)

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P( x =10) = 11C10 (0.65)^10 (0.35)^1 = 0.0518

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add:

P( x ≥ 8) = 0.4254

d)

P(x=4)+P(x=5)+P(x=6)+P(x=7)

P( x =4) = 11C4 (0.65)^4 (0.35)^7 = 0.0379

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P( x =6) = 11C6 (0.65)^6 (0.35)^5 = 0.1830

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Step-by-step explanation:

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