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Kazeer [188]
3 years ago
13

0.2x - 1 = -1 Fndndndnddsmsmsskaalamakaksnsndnx c cncjxmdnd

Mathematics
1 answer:
Sedaia [141]3 years ago
6 0

Answer:

0.2

Step-by-step explanation:

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A gasoline tank for a certain car is designed to hold 15 gallons of gas. Suppose that the actual capacity of a randomly selected
marta [7]

Answer:

Tanks of 15.3081 gallons and larger are considered too large.

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 = 15, \sigma = 0.15

How large does a tank have to be to be considered too large

largest 2%, so at least the 98th percentile.

The 98th percentile is X when Z = 0.98. So it is X when Z = 2.054.

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

2.054 = \frac{X - 15}{0.15}

X - 15 = 2.054*0.15

X = 15.3081

Tanks of 15.3081 gallons and larger are considered too large.

8 0
3 years ago
2.3. Use the following subtraction strategies to calculate 884-597: 2.3.1. breaking up the second number 2.3.2. adding on to the
DochEvi [55]

It should be noted that the value of 597 subtracted from 884 is 287.

<h3>How to illustrate the subtraction?</h3>

The information is simply that we should subtract 884 and 597 and also illustrate it.

This will be:

884 - 597 = 287.

A word problem illustrating this is that a man had 884 pens and gave 597 pens to his friends. How many pens does he have left?

This will be:

= 884 - 597 = 287

Learn more about subtraction on:

brainly.com/question/220101

#SPJ1

4 0
2 years ago
Marco and Drew stacked boxes on a shell. Marco lifted 9 boxes and Drew lifted 14 boxes. The boxes that Drew lifted each weighed
fenix001 [56]

Answer:

If m = the weight of boxes that marco lifted, and each box that drew lifted was 8 lbs less than marcos boxes, then you would multiply the total number of boxes that drew lifted by the weight of marcos total boxes - 8 or 14(m-8)

Step-by-step explanation:

5 0
3 years ago
The amount in dollars an electrician charges in terms of the number of hours worked is represented by the function y=22x+42.
sasho [114]

Answer:

Step-by-step explanation:"

The electrician charges an initial fee of $42", AND "The electrician charges $22 for every hour worked" is true.

The equation is y=22x+42. The formula is y=mx+b.m is the slope, or is this case, the number of dollars for every "x", which is the number of hours worked. So you have to pay $22 for every hour the electrician works.b is the y-intercept, or the amount it starts with, in this case, you have to pay a fee of $42 even when the electrician worked 0 hours. This is because $42 is the amount it starts with.On a graph, the line will start at (0,42) because that is when you start paying. And then it will increase by 22 for each hour, so the next coordinate would be (1,64).

7 0
4 years ago
Find the function f (x) =ax2 + bx+ c whose graph contains the points (1, 2), (-2,-7), and (2, -3). Write the system of equations
yan [13]

what grade you r?????....

3 0
3 years ago
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