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4 years ago

Please Help Me!!!!!!

Mathematics

2 answers:

Lina20 [59]4 years ago

6 0

The answer is H. I just finished this problem up

Elanso [62]4 years ago

3 0

Mimiwhatsup Answer is: H

The graph is correct and so is the table it's domain and ranges are correct I know I is not correct hope this helps!

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Students who buy tickets at a local movie theater receive a 10% discount on the price of a ticket. what is the total price for t

Andreyy89

Answer:

$21.60

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

Evaluate: |18|<br> A:1/18<br> B:-1/-18<br> C:-18<br> D18

masya89 [10]

Answer will be D. Absolute value can never be negative.

4 0

3 years ago

Aisha has $300 in her account. On average, she deposits $14 into her account, every day, for k days. Enter an expression to to c

MaRussiya [10]

Answer:

342

Step-by-step explanation

14+14+14 = 42

42 + 300 = 342

4 0

3 years ago

Battery packs in electric go-carts need to last a fairly long time. The run-times (time until it needs to be recharged) of the b

pav-90 [236]

Answer:

The minimum level for which the battery pack will be classified as highly sought-after class is 2.42 hours

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

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

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

$\mu = 2, \sigma = 0.33$

What is the minimum level for which the battery pack will be classified as highly sought-after class

At least the 100-10 = 90th percentile, which is the value of X when Z has a pvalue of 0.9. So it is X when Z = 1.28.

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

$1.28 = \frac{X - 2}{0.33}$

$X - 2 = 0.33*1.28$

$X = 2.42$

The minimum level for which the battery pack will be classified as highly sought-after class is 2.42 hours

4 0

3 years ago

⦁ Scott works as a delivery person for a shipping company. The graph shows a linear model for his delivery times on different da

BARSIC [14]

Answer:

(3, 21), (6, 12)
-3
y -21 = -3(x -3) ⇒ y = -3x +30
30 minutes; 3 minutes

Step-by-step explanation:

a) The two marked points have coordinates (days, minutes) = (3, 21) and (6, 12).

b) The slope is the vertical change (rise) divided by the horizontal change (run). For these two points, that is ...

rise/run = (12-21)/(6-3) = -9/3 = -3 = slope

c) The point-slope form of the equation for a line is ...

y -k = m(x -h) . . . . . . for slope m through point (h, k)

Using the first point and the slope we found, this is ...

y -21 = -3(x -3) . . . . . point-slope form

Add 21 and eliminate parentheses:

y = -3x +9 +21

y = -3x +30 . . . . . . . . collect terms; slope-intercept form

d) The initial time is the time corresponding to day 0, the value of y when x=0. It is 30 minutes.

The slope in part (b) tells us the time decreases by 3 minutes per day.

6 0

3 years ago