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
Alina [70]
3 years ago
12

The temperature is 6°F outside right now and is dropping 2° every hour. Aletta wants to know how many hours it will take for the

temperature to reach -10°F. The table shows how she wrote and solves and inequality. did aletta get the correct answer? if no, explain what she did wrong.
please answer right away!!!

Mathematics
1 answer:
DedPeter [7]3 years ago
7 0

Answer:

It will take 8 hours

Step-by-step explanation:

You might be interested in
A bookshop had 650 copies of a book for sale. The books were marked at 75 per copy in order to make a profit of 30%. A bookselle
Ganezh [65]

Answer:

The percentage profit of the bookshop will make on the whole is 27%.

Step-by-step explanation:

The following are given in the question:

Copies of books for sale = 650

Selling price per copy = 75

Copies sold at 5% discount = 300

Discount rate = 5%, or 0.05

Percentage profit per copy = 30%, or 0.30

To calculate cost per copy, the following formula is used:

Percentage profit per copy = (Selling price per copy – Cost per copy) / Cost per copy …….. (1)

Substituting the values into equation (1) and solve for Cost per copy, we have:

30% = (75 - Cost per copy) / Cost per copy

0.30 * Cost per copy = 75 - Cost per copy

(0.30 * Cost per copy) + Cost per copy = 75

1.30 * Cost per copy = 75

Cost per copy = 75 / 1.30

Cost per copy = 57.6923076923077

Therefore, we have:

Total cost = Copies of books for sale * Cost per copy = 650 * 57.6923076923077 = 37,500

Selling price at 5% discount = 75 * (100% - Discount rate) = 75 * (100% - 5%) = 75 * 95% = 71.25

Revenue from sales at selling price at 5% discount = Selling price at 5% discount * Number of sales at 5% discount = 71.25 * 300 = 21,375

Revenue from the remaining copies sold at 75 per copy = (Copies of books for sale - 300) * 75 = (650 - 300) * 75 = 350 * 75 = 26,250

Total revenue = Revenue from sales at selling price at 5% discount + Revenue from sales at 75 per copy = 21,375 + 26,250 = 47,625

Total profit = Total revenue - Total cost = 47,625 - 37,500 = 10,125

To calculate the percentage profit of the bookshop will make on the whole, the following formula is used:

Percentage profit on the whole = (Total profit / Total cost) * 100 ................ (2)

Substituting the relevant values form above into equation (2), we have:

Percentage profit on the whole = (10,125 / 37,500) * 100

Percentage profit on the whole = 0.27 * 100

Percentage profit on the whole = 27%

Therefore, the percentage profit of the bookshop will make on the whole is 27%.

3 0
3 years ago
The amount of gas that a helicopter uses is directly proportional to the number of hours spent flying. The helicopter flies for
dezoksy [38]

Answer: 44 gallons

Step-by-step explanation:

Using proportion,

33 gallons = 3hours

X = 4hours

Cross multiply

3 × X = 33 × 4

3X = 132

Divide bothside by 3

3x/3 =132/3

X = 44

Therefore the helicopter uses 44gallons for 4 hours.

3 0
3 years ago
Please solve <br> -1/3e+1=-7
serious [3.7K]

Answer:

E=-24

Step-by-step explanation:

3 0
3 years ago
8-6: MathXL for School: Practice &amp; Problem Solving
notka56 [123]

Answer:

The Area of a circle is

\pi {r}^{2}

Therefore the Area of Circle A is

\pi {8}^{2}  \\ 201.06

Area of Circle B is

\pi {10}^{2}  \\ 314.16

Circle C

\pi {14}^{2}  \\ 615.75

Circle D

\pi {13}^{2}  \\ 530.93

3 0
3 years ago
Suki is making lemonade to bring to the beach. She has two containers. One holds one gallon and the other holds 7 quarts. If she
Alex73 [517]

Answer:

40 cups

Step-by-step explanation:

7 0
3 years ago
Other questions:
  • Another way to 7x+4(x+5)
    7·1 answer
  • Pleasssssssseeee help
    6·1 answer
  • What's 5 divided by 47
    11·1 answer
  • 3x + 2y = 10 2x + 3y = 15/2
    5·1 answer
  • As a part of a customer loyalty program, a restaurant's computer chooses orders at random to receive a free appetizer. Each orde
    6·1 answer
  • Find the value of x.<br> 140°<br> 40<br> 2x<br> A. 50<br> B. 90<br> C. 20<br> D. 70
    15·1 answer
  • In the 2012 Paralympic Games, the total number of gold and silver medals won by Brazil was 35 The ratio of the number of gold me
    15·1 answer
  • Problem Solving World
    7·1 answer
  • A robot’s height is 1 meter 20 centimeters. How tall is the robot in millimeters?
    7·2 answers
  • Which graph represents the function h(x)=IxI+0.5
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!