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3 years ago

1) Given the equation ax + 3 2 = 6, solve for x.

2 answers:

7 0

$ax+32=6$
subtract 32 from both sides
$ax+32-32=6-32$
simplify
$ax=-26$
divide both sides by a
$\frac{ax}{a}= \frac{-26}{a}$
simplify
$x=- \frac{26}{a}$
Hope this helps

ruslelena [56]3 years ago

4 0

Ax + 32 = 6
- 32 = -32
---------------------
ax = -26
---- -----
a a

1x = -26
-----
a

x = -26
-----
a

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Nesterboy [21]

Answer:

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Step-by-step explanation:

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Ymorist [56]

Answer:

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Step-by-step explanation:

going into the wind make the plane flew 5,5 hours to get 1980 miles, implies the real travel speed was

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speed plane (y) in direction A to B plus wind speed (x) in direction B to A. Notice opposites direction speed, so we have:

y + (-x) = 360 (1)

The return fly took 4,5 hours so 1980/4,5 = 440 miles/ hours as the result

Y + x = 440 (2)

We have a two equation with two variables system, It could be solved for any of the procedures. We will use the substitution method.

From equation (1) y + (-x) = 360 y - x = 360 y = 360 + x (1)

In the second equation

y + x = 440 then we replace y for its value as function of x

(360 + x ) + x = 440

Solving for x 360 + 2x = 440 or 2x = 440 – 360

x (440 - 360)/2

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3 years ago

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Rainbow [258]

Answer:

(a) True

(b) True

(d) True

Step-by-step explanation:

The general form of a confidence interval is:

$CI=SS\pm MOE$

Here,

SS = Sample statistic

MOE = margin of error

The formula to compute the MOE is:

$MOE=\frac{length}{2}$

Here, length implies the length of the confidence interval.

(a)

The statement is:

"The length of a confidence interval can be determined if you know only the margin of error."

The length of the confidence interval is twice the MOE.

So, yes one can compute the length of the confidence interval if they know the value if MOE.

The statement is True.

(b)

The statement is:

"The margin of error can be determined if you know only the length of the confidence interval."

The margin of error of the confidence interval is half the length.

So, yes one can compute the MOE if they know the length of the confidence interval.

The statement is True.

(c)

The statement is:

"The confidence interval can be obtained if you know only the margin of error."

The confidence interval formula is:

$CI=SS\pm MOE$

So, if we only knew the value of MOE we cannot compute the confidence interval. We will also need the value of the sample statistic.

The statement is False.

(d)

The statement is:

"The confidence interval can be obtained if you know only the margin of error and the sample mean"

The confidence interval formula is:

$CI=SS\pm MOE$

So, if we knew the value of MOE and the sample statistic we can compute the confidence interval.

The statement is True.

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