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
Lera25 [3.4K]
3 years ago
6

Ariana is driving on a long road trip she currently has 10 gallons of gas in her car each hour that she drives her car uses up 1

.75 gallons of gas how much gas would be in the tank after driving for 2 hours how much gas would be left after t hours
Mathematics
1 answer:
Pavel [41]3 years ago
6 0

Answer:

Step-by-step explanation:

Start: 10 gallons

Loss: 1.75 per hour --> -1.75 gallons

After two hours 10+2(-1.75)=10-3.5=6.5 gallons left

After t hours 10+t(-1.75)=10-1.75t gallons left

You might be interested in
Clare estimates that her brother is 4 feet tall. When they get measured at the doctor’s office, her brother’s height is 4 feet,
alekssr [168]

Answer:

  • 1. Yes
  • 2. 2 inches
  • 3. 4%

Step-by-step explanation:

  • Estimated height is 4 feet
  • Measured height is 4 feet 2 inches

1. The measurement is actual and should be considered as such. Estimate is approximate most of the time.

2. <u>The error is:</u>

  • 4 feet 2 inches - 4 feet = 2 inches

3. <u>Percent error:</u>

  • 2 inches/4 feet 2 inches × 100% =
  • 2 inches / 50 inches × 100% =
  • 0.04× 100% =
  • 4%
5 0
2 years ago
4 more than 7 times a number
Rudiy27
11x (or any variable)
4 0
3 years ago
Read 2 more answers
Need help pls<br>thank you in advance ​
ira [324]

Answer:

<h3><u>Mean</u></h3>

<u />

\textsf{Mean}\:\overline{X}=\sf \dfrac{\textsf{sum of all the data values}}{\textsf{total number of data values}}

\implies \sf Mean\:(Nilo)=\dfrac{5+6+14+15}{4}=\dfrac{40}{4}=10

\implies \sf Mean\:(Lisa)=\dfrac{8+9+11+12}{4}=\dfrac{40}{4}=10

<h3><u>Standard Deviation</u></h3>

\displaystyle \textsf{Standard Deviation }s=\sqrt{\dfrac{\sum X^2-\dfrac{(\sum X)^2}{n}}{n-1}}

\begin{aligned}\displaystyle \textsf{Standard Deviation (Nilo)} & =\sqrt{\dfrac{(5^2+6^2+14^2+15^2)-\dfrac{(5+6+14+15)^2}{4}}{4-1}}\\\\& = \sqrt{\dfrac{482-\dfrac{40^2}{4}}{3}}\\\\& = \sqrt{\dfrac{82}{3}}\\\\& = 5.23\end{aligned}

\begin{aligned}\displaystyle \textsf{Standard Deviation (Lisa)} & =\sqrt{\dfrac{(8^2+9^2+11^2+12^2)-\dfrac{(8+9+11+12)^2}{4}}{4-1}}\\\\& = \sqrt{\dfrac{410-\dfrac{40^2}{4}}{3}}\\\\& = \sqrt{\dfrac{10}{3}}\\\\& = 1.83\end{aligned}

<h3><u>Summary</u></h3>

Nilo has a mean score of 10 and a standard deviation of 5.23.

Lisa has a mean score of 10 and a standard deviation of 1.83.

The <u>mean</u> scores are the <u>same</u>.

Nilo's standard deviation is higher than Lisa's.  Therefore, Nilo's test scores are more <u>spread out</u> that Lisa's, which means Lisa's test scores are more <u>consistent</u>.

5 0
1 year ago
Simplify the expression to a + bi form:<br> (9+7i)(6 + i)
Scorpion4ik [409]

(9 + 7i)(6 + i) \\  = 54 + 9i + 42i + 7 {i}^{2}  \\  = 54 + 51i  - 7 \\  = 47 + 51i

I hope I helped you^_^

6 0
3 years ago
Read 2 more answers
A store pays $245 for radio. The store marks the radio up 65%. What is the selling price for the radio? Explain answer and earn
liraira [26]
So what you want to do is multiply 245 by 1.65 (because it’s +65%) and by doing that you get $404.25 :)
5 0
2 years ago
Read 2 more answers
Other questions:
  • 4+2×5=<br> How do I solve this problem
    11·2 answers
  • This one also I needed help on
    8·1 answer
  • What is the domain of H
    11·1 answer
  • I need to know how to graph this inequality
    15·1 answer
  • Help please will give brainiest
    10·1 answer
  • X- 2y = 3 5x + 3y = 2 The lines whose equations are shown intersect at which point? O (1, -1),(-1,1),(0'3/2)​
    13·1 answer
  • (Another Easy Question) Claire has 5 markers and Bob has 3, what is the ratio of Bob’s markers to Claire’s markers? Marking Brai
    14·1 answer
  • Billy’s grandfather gave him $1,200 when he turned 16 towards buying a new car that he wanted, which cost $25,000. He saved $500
    15·1 answer
  • 8×3/4×3/4×8×3/4 Help me please. ​
    7·1 answer
  • 138.867545518 to 4 decimal places.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!