1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Artemon [7]
3 years ago
6

Our car has a 15-gallon gas tank. A lower grade of gasoline costs $2.96 per gallon. The premium grade gasoline costs $3.15 per g

allon. There are three gallons left in your gas tank. What is the difference in the cost of filling your tank between the two grades of gasoline?
Mathematics
2 answers:
grandymaker [24]3 years ago
6 0

Answer:

The difference in the cost of filling your tank between the two grades of gasoline is $2.28.

Step-by-step explanation:

Given : Our car has a 15-gallon gas tank. A lower grade of gasoline costs $2.96 per gallon. The premium grade gasoline costs $3.15 per gallon. There are three gallons left in your gas tank.

To find : What is the difference in the cost of filling your tank between the two grades of gasoline?

Solution :

The gas tank is of 15 gallons

There are three gallons left in the gas tank.

The tank has to be filled with 15 - 3 = 12 gallons

A lower grade of gasoline costs $2.96 per gallon.

So, the cost of filling the tank with the lower grade gasoline is

C_1=12\times 2.96

C_1=\$35.52

A upper grade of gasoline costs $3.15 per gallon.

So, the cost of filling the tank with the lower grade gasoline is

C_2=12\times 3.15

C_2=\$37.8

The difference in the cost of filling your tank between the two grades is

C= $37.80 - $35.52

C= $2.28

Therefore, the difference in the cost of filling your tank between the two grades of gasoline is $2.28.

djyliett [7]3 years ago
5 0

Answer:

Step-by-step explanation:. .0381

You might be interested in
I need help with my mathematics exam grade 7 end year!PLEASE help me asap!!PLEASE i beg you :)​
AnnyKZ [126]

so first off for the ratios

if you were to find them on a graph, you would want to find a slope. The slope is your ratio pretty much

if you were to find them for a table, you would have to see what the question is asking. if it asking like what is the amount of people vs animals per square mile, you would find people on the table and then go down to square mile as opposed to square feet or some other variable. Then you will put what they are asking first and then what they are asking second. here ill show you an example if it is to confusing what i just said. if there are 50 animals per square mile and 150 people per square mile, and the question asked you what is the ratio between people and animals, you would answer 150/50, BUT you have to simplify. 3/1 would be you answer.

next off for the transformation

if there was a triangle at the points 5,3|4,6|5,5| and you wanted to translate it 5 units up and 6 units to the left, all you do is think about this. up and down are changes in the y, left and right are changes in the x axis. left and down are negative changes, up and right are positive changes.

so you would apply that thinking to ALL the points. it would look something like the picture below.

finally, for the shaded area of figures

lets take a abstract figure. say that we shade the upper left hand corner, and it will look something like the picture below. If you want to find the area of the figure, you would have to isolate it. Then you would multiply the width by the length and get 2.

i really hope this helps on your exam. good luck!

8 0
2 years ago
What is this fraction as a decimal?
expeople1 [14]
14.4
hope this helps:)
6 0
2 years ago
A researcher wants to test whether a certain sound will make rats do worse on learning tasks. It is known that an ordinary rat c
AveGali [126]

Answer:

So we reject the null hypothesis and accept the alternate hypothesis that rats learn slower with sound.

Step-by-step explanation:

In this data we have

Mean= u = 18

X= 38

Standard deviation = s= 6

1) We formulate the null and alternate hypothesis as

H0:  u = 18  against           Ha : u > 18  One tailed test .

2) The significance level alpha = ∝= 0.05 and  Z alpha has a value ± 1.645 for one tailed test.

3)The test statistics used is

Z= X- u / s

z= 38-18/6= 3.333

4) The calculated value of z = 3.33 is greater than the z∝ = 1.645

5) So we reject the null hypothesis and accept the alternate hypothesis that rats learn slower with sound.

First we set the criteria for determining the true of value of the variable. That whether the rats learn in less or more than 18 trials.

Then we find the value of z for the given significance value given and the test about to be checked.

Then the test statistic is determined and calculated.

Then both value of z and z alpha re compared. If the test statistics falls in the rejection region  reject the null hypothesis and conclude alternate hypothesis is true.

The figure shows that the calulated z value lies outside the given z values

4 0
2 years ago
90 km is 8% of what distance
sergejj [24]
1,125 km is the distance
4 0
3 years ago
The line segment shown is reflected over the y - axis what are the new coordinates of point A​
DochEvi [55]
I’m so sorry I needed points for an important quiz
6 0
2 years ago
Other questions:
  • The perimeter of a patio is 64 feet. The width of the patio is 12 feet and the length of the patio is ( x+6 ) feet. what is the
    13·2 answers
  • Write a 2-column proof to prove the triangles congruent
    15·1 answer
  • Which of the following are solutions to the equation below?
    5·1 answer
  • Need help Pronto! Will give braintliest.
    5·1 answer
  • Please give a step by step explanation with the reasons. Basically a proofs column.<br> Thank you.
    10·1 answer
  • Relationships in Figures
    15·1 answer
  • What is the probability that a student who plays an instrument is in band
    12·1 answer
  • Which product is greater than 3/5<br><br> Look at the picture ☺️<br> Pls answer ASAP✨
    12·1 answer
  • A bag contains pennies, nickels, nickels, and nickels. There are 50 coins in total. Of the coins, 14% are pennies and 34% are di
    7·1 answer
  • A fisherman can
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!