The following system of equations is _____.

1 answer:

3 0

The correct answer among the choices listed above is the second option. The following system of equations is equivalent. This is because when written in the same form, one equation will yield to the same equation as the other.

y = -1/3x +2/3

2x + 6y = 4
6y = 4 - 2x
y = 2/3 - 1/3x
y = -1/3x +2/3

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I need to solve cy−7=5d+3y for y, any help?

iVinArrow [24]

Given cy - 7 = 5d + 3y, we solve for y as follows:

cy - 3y = 5d + 7

y(c - 3) = 5d + 7

y = (5d + 7) / (c - 3)

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Margaret [11]

The answer would be 20.

The question is asking you to find the value of the expression for when c = 100, so we have to put 100 where c is in the equation. Given that fact, we start with c/5, then put the 100 in for c.
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It is known that the population variance equals 484. With a .95 probability, the sample size that needs to be taken to estimate

Hitman42 [59]

Answer:

The minimum sample size is n = 75 so that the desired margin of error is 5 or less.

Step-by-step explanation:

We are given the following in the question:

Population variance = 484

Standard deviation =

$\sigma^2 = 484\\\sigma =\sqrt{484} = 22$