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3 years ago

Selena paid $15.00 for 6 gallons of gasoline what was the price per gallon

Mathematics

1 answer:

Sophie [7]3 years ago

3 0

Answer:

$2.50

Step-by-step explanation:

Is Selena paid $15 for 6 gallons and you want to find the price for one gallon, all you need to do is divide the price of 6 gallons ($15) by the number of gallons (6).

15/6 = 2.5. Your answer is $2.50. Hope this helps ^-^

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What is the standard deviation of the following data? If necessary, round your answer to two decimal places. 82, 44, 67, 52, 120

Dominik [7]

<span>Number of values = 5 (There are 5 values given)

Mean = (82 + 44 + 67 + 52 + 120)/5 = 73

Variance = (1/5) [(82-73)^2 + (44-73)^2 + (67-73)^2 + (52-73)^2 + (120-73)^2] = 721.6

Standard deviation = sqrt (721.6) = 26.86</span>

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Mary ate one of the muffins she baked and had 12 left. Write an equation to find how many muffins Mary started with.

Wittaler [7]

Well, do you know what 12+1 is? Because if she ended with 12 and ate 1 to begin with, you just add those numbers together, and that is your answer!

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9/3y-12=1/4y-4 solve for y

Mama L [17]

The answer would be y=32/11

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4 years ago

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Miss Muffin’s goal is for her whole class of 20 students to average a 95 on a math test. When she got to the last test to grade,

ASHA 777 [7]

Answer:

Step-by-step explanation:

Average = total points / total students

95 = (19×97 + x) / 20

1900 = 1843 + x

x = 57

The lowest the last test score can be for the whole class to average a 95 is 57.

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3 years ago

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The number of points Marcus scored in different rounds of a computer board game is shown

shtirl [24]

Answer:

583

Step-by-step explanation:

The mean of a data set is the average of the data set. It can be found by adding up all of the values and then dividing by the total number of values added. In this case, one is given the mean, and one needs to find a missing value. Since there is a missing element, add one to the total number of values in the data set. The missing element is represented by the parameter (x). Set up an equation and solve:

$\frac{(236)+(342)+(328)+(352)+(352)+(306)+(317)+(x)}{8}=325\\$

Simplify,

$\frac{2233+x}{8}=352$

Inverse operations,

$2233+x=2816\\\\x = 583$

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