3 years ago

Which statement include two quantities in the real world that are additive inverses

1 answer:

5 0

Right answers: <span>A hot-air balloon ascends 2000 ft from the ground and then descends 2000 ft.

</span><span>Noa hiked 2 mi up a mountain trail and then hiked 2 mi down the trail.</span>

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TEA [102]

Answer:

Step-by-step explanation:

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3 years ago

Lee has a jar of 100 pennies. She adds groups of 10 pennies to the jar. She adds 5 groups. What numbers does she say?

Alenkinab [10]

150 pennies in the jar .

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3 years ago

Please help!! I Will give brainliest!! Just the coordinates will be fine!!

Lerok [7]

Answer:

(2, 1) (1, 5) and (4, 3)

Step-by-step explanation:

Basically switch the x and y axes, and depending on the quadrant, switch the negative and positive signs to their appropriate ones.

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3 years ago

On a recent quiz, the class mean was 72 with a standard deviation of 4.2. Calculate the z-score (to 2 decimal places) for a pers

barxatty [35]

Answer:

The Z score of the person is -3.09.

Step-by-step explanation:

The standard normal deviate (Z) for a normal distribution is given by

$Z=\frac{X-\bar{X}}{\sigma }$

where,

X = the value of observation

$\bar{X}$ is mean of the observations and

σ = standard deviation of the score

Applying values we get

$Z=\frac{59-72}{4.2}=-3.09$

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3 years ago

Ellus

butalik [34]

9514 1404 393

Answer:

2.25

Step-by-step explanation:

Add the square of half the x-coefficient to complete the square.

(-3/2)² = 9/4 = 2.25

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3 years ago