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
marta [7]
2 years ago
5

If gas is $2.45 and you pay $ 12.00 how many gallons of gas do you get ?

Mathematics
2 answers:
attashe74 [19]2 years ago
6 0
Gas is 2.45 per gallon.  So if we pay $12 we get 12÷2.45 gallons:

12 ÷ 2.45 ≈ 4.90 gallons.

You get roughly 4.90 gallons.
Natali [406]2 years ago
6 0
You will divide 12/2.45
The answer is 4.89795918
You might be interested in
Tell whether the product SR is defined for S4×5 and R4×3 . If yes, give the product's dimensions as the following example: 4x3.
Rufina [12.5K]
No, the product is not valid. The number of columns of \mathbf S (five) should match the number of rows of \mathbf R (four).
8 0
2 years ago
The water works commission needs to know the mean household usage of water by the residents of a small town in gallons per day.
valina [46]

Answer:

A sample of 179 is needed.

Step-by-step explanation:

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1 - 0.85}{2} = 0.075

Now, we have to find z in the Ztable as such z has a pvalue of 1 - \alpha.

That is z with a pvalue of 1 - 0.075 = 0.925, so Z = 1.44.

Now, find the margin of error M as such

M = z\frac{\sigma}{\sqrt{n}}

In which \sigma is the standard deviation of the population and n is the size of the sample.

A previous study found that for an average family the variance is 1.69 gallon?

This means that \sigma = \sqrt{1.69} = 1.3

If they are using a 85% level of confidence, how large of a sample is required to estimate the mean usage of water?

A sample of n is needed, and n is found for M = 0.14. So

M = z\frac{\sigma}{\sqrt{n}}

0.14 = 1.44\frac{1.3}{\sqrt{n}}

0.14\sqrt{n} = 1.44*1.3

\sqrt{n} = \frac{1.44*1.3}{0.14}

(\sqrt{n})^2 = (\frac{1.44*1.3}{0.14})^2

n = 178.8

Rounding up

A sample of 179 is needed.

7 0
3 years ago
What's 5.96 as a fraction
monitta
5 and 96/100 or if you need to simplify 5 and 24/25
6 0
3 years ago
Read 2 more answers
on a recent hike through riverbend park antoinette traveled 2/3 mile in 1/3 hour . Which unit rate describes antoinettes speed i
My name is Ann [436]

Answer:

Her speed is of 2 miles per hour.

Step-by-step explanation:

Velocity:

The velocity is given by the following formula:

v = \frac{d}{t}

In which v is the velocity, d is the distance and t is the time.

2/3 mile in 1/3 hour .

This means that d = \frac{2}{3}, t = \frac{1}{3}

Which unit rate describes antoinettes speed in miles per hour?

This is v. So

v = \frac{d}{t} = \frac{\frac{2}{3}}{\frac{1}{3}} = \frac{2}{3}*\frac{3}{1} = 2

Her speed is of 2 miles per hour.

5 0
2 years ago
Ines has saved $5. She doubles the amount she saves each week. Does the function have a constant difference or a constant ratio?
salantis [7]

Answer:

The function have a constant ratio

No, it does not represent an exponential function.

Step-by-step explanation:

As given,

Ines has saved $5. She doubles the amount she saves each week.

⇒ In first week she saved = $5

   In second week she saved = 2×$5 = $10

   In third week she saved = 2×$10 = 20

  In fourth week she saved = 2×$20 = 40

and so on..

∴ we get the series

5, 10, 20, 40 ,.......

If the series is given as a, b, c, d, ..... , then

The common difference is defined as d = b-a = c-b

The common ration is defined as r = \frac{b}{a} = \frac{c}{b}

Here, in the given question

The series is - 5, 10, 20, 40

This has no common difference , d =   10 - 5 (= 5 )≠ 20 - 10 (= 10)

As 5 ≠ 10

So the function does not define common difference .

Now,

This has common ratio , r =  \frac{10}{5} (=2) = \frac{20}{10}(=2)

As 2 = 2

So, the function represent common ratio

Now,

The function does not represent an exponential function because it is increased by common ratio.

7 0
3 years ago
Other questions:
  • 331 students went on a field trip. Six buses
    6·1 answer
  • What is the distance between the points (−5, 10) and (−5, 2) ?
    13·2 answers
  • Susan starded her homework at 1:59 p.m. And finished her homework 96 minutes later. Susan had volleyball practice at 4:00p.m.
    7·2 answers
  • A rectangle has an area of 100 square centimeters. The base of the rectangle is 25 centimeters.
    6·2 answers
  • At the beginning of a population study, the population of a large city was 1.65 million people. Three years later, the populatio
    14·1 answer
  • Focus on number two ok
    13·2 answers
  • Harry bought a package of blueberries to put in his muffins.tha package he bought had 64 blueberries inside. he plans on making
    9·1 answer
  • PLEASE HELP ME WITH THIS ITS 10 POINTS!!! Im begging you
    7·2 answers
  • How do I solve these systems of equations?
    11·1 answer
  • The number of students using a certain university's online programs has been increasingly exponentially each year since 2010. Th
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!