3 years ago

What is (4x + 2) - (2x + 1)?

Mathematics

1 answer:

daser333 [38]3 years ago

7 0

2x + 1

You can find that by switching the signs in the second set of parenthesis and then adding.

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aev [14]

Answer:

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What is the slope of the line given by the following equation? Give an exact number. -13x 5y=-7

Black_prince [1.1K]

The slope should be 13/5x

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An engineer is going to redesign an ejection seat for an airplane. the seat was designed for pilots weighing between 130lb and 1

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Answer: 0.4758

Step-by-step explanation:

Given : Mean : $\mu=137\text{ lb}$

Standard deviation : $\sigma =28.9\text{ lb}$

Also, the new population of pilots has normally distributed .

The formula to calculate the z-score :-

$z=\dfrac{x-\mu}{\sigma}$

For x=130 lb .

$z=\dfrac{130-137}{28.9}=-0.2422145\approx-0.24$

For x=171lb.

$z=\dfrac{171-137}{28.9}=1.1764705\approx1.18$

The p-value = $P(-0.24$

$=0.8809999-0.4051651=0.4758348\approx0.4758348\approx0.4758$

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3 years ago

A + 12.5 = 20 <br> Solve the following equation and show work

makkiz [27]

A + 12.5 = 20
- 12.5 -12.5
———————
A = 7.5
The answer is 7.5

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The monthly rent of Marilyn's house went from $500 to $440, If p is the

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Answer:

Step-by-step explanation:

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