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
Dmitriy789 [7]
3 years ago
13

When Famke charges her phone, it gains 222 percentage points each minute. When Famke uses her phone, it loses 555 percentage poi

nts each minute. Once, Famke used her phone for some time, and then charged it for twice the amount of time she used it. In the end, her phone lost 101010 percentage points. How long did Famke use her phone and how long did she charge it?
Mathematics
2 answers:
Charra [1.4K]3 years ago
6 0
To answer this you can use a guess and check strategy.

Start with 5 minutes using it (25% lost) and 10 minutes charging (20% gained).

Try 7 minutes using it (35% lost) and 14 minutes charging (28%).

Next, 9 minutes (45%) and 18 minutes(36%).

10 minutes (50%) and 20 minutes (40%). This is the difference.

She used it for 10 minutes and charged it for 20 minutes.
kolbaska11 [484]3 years ago
4 0

Answer:  Famke uses her phone for 10 minutes and she charge it for 20 minutes .

Step-by-step explanation:

Let x be the number of hours Famke charges her phone.

Let y be the number of hours Famke uses her phone.

According to question, he charged it for twice the amount of time she used it.

So, it becomes

x=2y\\\\x-2y=0-----(1)

Number of points he gain while charging her phone = 2%

Number of points he loses while used her phone = 5%

Total points he lost = 10%

So, our equation would be

0.02x-0.05y=-0.10-----(2)

Put the value of x in the eq(2).

0.02\times 2y-0.05y=-0.10\\\\0.04y-0.05y=-0.10\\\\-0.01y=-0.10\\\\y=10

and x=2×10=20 minutes

Hence, Famke uses her phone for 10 minutes and she charge it for 20 minutes.

You might be interested in
Challenge You have 2 different savings accounts. For Account​ A, the simple interest earned after months is ​$. For Account​ B,
Debora [2.8K]

Answer and Step-by-step explanation:

The computation is shown below;

As we know that

The simple interest is

Simple interest = Principal × rate × time

For Account A, the principal would be

2 = Principal × 3.2% × 3

So, the principal is $20.83

For account B, the principal would be

38.50 = Principal × 2.2% × 30

So, the principal is $58.33

Now the interest for both the accounts are as follows

For account 1

= $20.83 × 3.2%

= $0.67

And, for the account 2

= $58.33 × 2.2%

= $1.28

As it can be seen that the account 2 has the highest interest

The same is to be considered

7 0
2 years ago
I really need help with this sampling question and it would mean alot if someone could answer it
GuDViN [60]

Answer:

vc vzc vzv czzzzzzzzzzzz

Step-by-step explanation:

vczzzzzzzzzzz            vdfBbbbbbbbbbfbfc

7 0
3 years ago
Find the volume of the given shape. Round your answer to the nearest<br> hundredth if necessary.
posledela
The answer is 1080 feet
7 0
2 years ago
What is a box plot? Explain in words how it looks,
maxonik [38]

Like the name implies, the diagram will involve a box. Specifically, it's a rectangle that has a vertical line somewhere inside it. The vertical line does not have to be at the midpoint. The vertical line represents the median. The left and right edges of the rectangle represent Q1 and Q3 in that order.

On either side of the rectangle are horizontal lines that are called whiskers. They stretch to the min and max (left and right sides respectively). This is when there aren't any outliers. If there are outliers, then there would be isolated island points not connected to the whiskers or the box.

4 0
2 years ago
Plz I really need this i'll give brainiest
Setler79 [48]
I can't sketch it but the answer is 18
8 0
3 years ago
Other questions:
  • A finance company offers a 36-month installment loan with an APR of 10.5%. Jerry wishes to use the loan to finance an engagement
    12·1 answer
  • Someone please help me figure this question out!!
    5·1 answer
  • Would you need to use the chain rule to find the derivative of this function?
    10·1 answer
  • An ellipse has a center at the origin, a vertex along the major axis at (20, 0), and a focus at (16, 0). the equation of the ell
    12·2 answers
  • What is the length of the arc intercepted by an angle of 10 degrees on a circle with a radius of 10 meters?
    15·1 answer
  • What is the vertex of the graph of f(x) = x2 + 4x + 6?
    7·1 answer
  • The graph shows the favourite colours chosen by some middle school students. Which statement is supported by the information in
    9·1 answer
  • A bucket of Unifix cubes has 5 red, 6 brown, 5 blue, 4 yellow, and 5 green. Mrs. Brothers is going to randomly
    12·2 answers
  • What is the domain of the function y=2 /X-6? EXCO o osx​
    11·2 answers
  • The time it takes to charge the battery of a cell phone is directly proportional to the charge of the battery.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!