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I am Lyosha [343]
3 years ago
10

The cost to.Purchase a tank.Of gasoline varies directly with the.Number of gallons purchased. You notice that the person in fron

t of you spent $40.50 on 15 gals of gas. If your truck needs 26 gals of gas how much will you spend
Mathematics
1 answer:
maxonik [38]3 years ago
5 0

Answer:

$70.20

Step-by-step explanation:

We need to first find the cost per gallon of the gas.

The person in front bought 15 gals at $40.50. The price of each gallon will therefore be:

40.50 / 15 = $2.70

You need to buy 26 gallons. The cost will be:

26 * 2.70 = $70.20

You will spend $70.20.

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elena-14-01-66 [18.8K]

Answer:

a. z-score = -1.2

b. The age 23 years old is -1.2 standard deviations below the mean

c. The age is not unusual

Step-by-step explanation:

a. Transformation to z-score

Mathematically;

z-score = (x - μ)/σ

where σ and μ are the standard deviation and the mean respectively.

From the question, x = 23, μ = 27.2 and σ = 3.5

Let’s put these into the equation;

z-score = (23-27.2)/3.5 = -1.2

b. Interpretation of result

The interpretation is that 23 years old is -1.2 standard deviations below the mean

c. Determination

The age is not unusual. This is because any z-value below -2 or above 2 is considered unusual

-1.2 is above -2 and thus it is not unusual

7 0
2 years ago
A box contains marbles of five different colors: red, green, blue, yellow, and purple. there is an equal number of each color. a
olga nikolaevna [1]
P(red) = 1/5     [that says "probability of getting red is one fifth"
P(green) = 1/5
P(blue) = 1/5
P(yellow) = 1/5
P(purple) = 1/5

The reason the fractions are all the same is that there are equal numbers of each color.  For example, if there were 7 marbles of each color, there would be a total of 35 marbles.

P(red) = 7/35 = 1/5
Similar for the other colors.
6 0
3 years ago
HELP ASAP PLEASE.
Schach [20]

Answer:

5(6)81 because the are

Step-by-step explanation:

6•82

8 0
2 years ago
The circumference of F is 120 cm what is the length of DE the minor arc
AfilCa [17]

Answer:

Option E 15 cm

Step-by-step explanation:

we know that

The circumference of a circle subtends a central angle of 360 degrees

so

using proportion

Find out the length of arc DE by a central angle of 45 degrees

Let

x -----> the length of arc DE

\frac{120}{360}=\frac{x}{45}\\\\x=120*45/360\\\\x=15\ cm

7 0
3 years ago
a hardware store charges a $30 rental fee and $15 per day to rent a power washer which equation correctly relates to the total c
BlackZzzverrR [31]

Answer:

y = 15x + 30

Step-by-step explanation:

The $30 rental fee is a flat fee.

The $15 per day can be noted as 15x.

y = 15x + 30

6 0
3 years ago
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