Mathematics High School

After charging for LaTeX: \frac{1}{3} of an hour, a phone is at LaTeX: \frac{2}{5} of its full power. A) How long will it take the phone to charge completely? B) Write a multiplication and division equation for this situation.

Answers

Answer 1

Answer:

Find the solution below

Step-by-step explanation:

A) Let the complete power of the phone be 1

If after charging 1/3 of an hour, a phone is at 2/5 of its full power, we can write;

1/3 hr = 2/5 of its full power

To determine the time it will take to phone to charge completely, we will say;

x hr = 1

Divide both expression

(1/3)/x = 2/5

1/3x = 2/5

Cross multiply

1 * 5  = 3x * 2

5 = 6x

x = 6/5

x  = 1.2

Hence it will take 1.2 hour for the phone to charge completely

B) From the expression in A

1/3x = 2/5

Multiply both sides by 3

1/3x * 3= 2/5 * 3

x = 2/5 * 3

Hence the multiplication equation is x = 2/5 * 3

Also divide both sides by 1/3

recall 1/3x = 2/5

1/3x ÷ 1/3 = 2/5÷1/3

x = 2/5÷1/3

Hence the division equation is x = 2/5÷1/3

Related Questions

Find the indicated side length to the nearest thousandth.

Answers

Given:

In a right angle triangle, base is 16, perpendicular height is x and the angle of elevation is 10 degrees.

To find:

The value of x.

Solution:

In a right angle triangle,

[tex]tan \theta=\dfrac{Perpendicular}{Base}[/tex]

In given triangle, using this formula, we get

[tex]tan (10^\circ)=\dfrac{x}{16}[/tex]

[tex]17633=\dfrac{x}{16}[/tex]

Multiply both sides by 16.

[tex]0.17633\times 16=x[/tex]

[tex]2.82128=x[/tex]

Round to the nearest thousandth.

[tex]x\approx 2.821[/tex]

Therefore, the value of x is 2.821 units.

EASY! PLS HELP!
According to the graph, what is the ratio of the number of students who selected "Fishing" as their favorite hobby to the number of students who selected "Reading" as their favorite hobby?
a. 1:5
b. 5:5
c. 5:8
d. 8:5
e. 8:1

Answers

Answer:

5:8

Step-by-step explanation:

Fishing to Reading

5 : 8

Answer:

C

Step-by-step explanation:

You have to put the 2 hobbies in the order given by the question.

The question states Fishing to reading, so that's the order you must go in.

Fishing/Reading = 5/8

C

Assume that all intersecting sides meet at right angles.
Be sure to include the correct unit in your answer.
16 cm
4 cm
?
10 cm
5 cm
6 cm

Answers

Answer:

9cm

Step-by-step explanation: You have to add 5 cm and 4cm because if you look that side is the same length as them added together.

write 3 over 4 as a decimal number

Answers

Answer: 3/4 = 0.75

Step-by-step explanation:

Answer:

.75

Step-by-step explanation:

Pls help me asapppppppppp

Answers

Answer:

I have to show the work gimme a sec

Step-by-step explanation:

Plz this one can you answer

Answers

Yuhhhhhhhhhh 82828191919110010202929229

Pls halp I need it fast so please try your best to be fast

Answers

Answer:B

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

Determine the range of the graph

Answers

Answer: Range: [0, 5]

is Justin went shopping for school clothes if the item cost $150 and he received a 10% discount what is the final price of his purchase​

Answers

Answer:

$135

Step-by-step explanation:

We can answer this by multiplying $150 by (1.00 - 0.10), or by 0.90:

0.90($150) = $135.

Note that 1.00($150) = $150 (full price)

and that 0.10($150) = $15 (discount)

and that (0.90)($150 = $135 (the fastest way to calculate the final (sale) price.

Find the area of this parallelogram.
12 inches
6 in.
7 in.
A. 42 inches
В.
42 square inches
O
C. 84 square inches
D. 72 square inches
O E. 72 inches

Answers

Answer:

it will be c

Step-by-step explanation:

How many solutions will this equation have?
x^(2)-12x +13 = 0

Answers

Answer:

1

Step-by-step explanation:

The price of a pair of shoes increases from $54 to $68. What is the percent increase to the nearest percent?
The percent increase is
1%.

Answers

Answer:

original price =54

change=68-54= 14

increse percentage= change/orginal x 100

=14/54 x100

=25.9%

What fraction of 200 gallons is 171 L? Give your answer in simplest form. 1 gallon = 4.5 L.
PLEASE HELP

Answers

Answer:

║∦║Hello Friend!║∦║

Your answer should be:

757.08

Step-by-step explanation:

I'm very sorry if it is wrong!

Have a great day!! :D

Find the distance between points (-3.7.7.5) and (0.3, 7.5).
units apart.

Answers

Answer:

sorry i didnt really understand

We write 4% as a decimal

Answers

Answer:

4/100=2/50=1/25=0.04 .........

please help!!!!!!!!

Answers

Answer:

This answer should be 16

Answer:

i think here the answer is 16

PLEASE PLEASE HELP ME

Answers

Y=-2x-2 it is the only one that is perfectly perpendicular and passes through (-3,4)

Find x.

Pls I need help could you help me

Answers

because 115 is on a line and a line equals 180, subtract 115 from 180 and you get x=65

HELP! I will rlly appreciate it! The average of Amy's, Ben's, and Chris's ages is 6. Four years ago, Chris was the same age as Amy is now. In four years, Ben's age will be 3/5 of Amy's age at that time. How many years old is Chris now?

Answers

Answer:

I believe the answer is 10 years old

What is x equal in 7^2 + 11^2 = x^2

Answers

Answer:

25 once a the steps are complete

Quadrilateral QRST is a square. If the measure of RS is 12x + 5 and QT is 8x + 15, find
the value of x.

Answers

Answer:

B) 2.5

Step-by-step explanation:

12x+5=8x+15

12x-8x=15-5

4x=10

x=10/4

x=2.5

using the distributive property what is 49 ×17 + 49 × 3​

Answers

Answer:

980

Step-by-step explanation:

I did it

A plane is beginning to descend when it is 10,000 feet in the air. The straight line distance (hypotenuse) to the airport is 25,000 feet. What is the angle of depression at which the plane began its descent? Round your answer to the nearest degree.

Answers

Answer:  35,000

Step-by-step explanation:

help me with this plzz

Answers

Answer:

6.3 I think

Step-by-step explanation:

it should be 6.3 maybeee

Answer:

10,000 x 0.63 = 6,300

Step-by-step explanation:

Hope this helped!!

At noon, a tank contained 8 cm of water. After several hours, it contained 4 cm of water. What is the
percent decrease of water in the tank?
The percent decrease of water in the tank is %.
Enter your answer in the answer box and then click Check Answer.
Review progress
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of 13
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Answers

Answer:

50%

Step-by-step explanation:

HELP ME PLEASEEEEEEEEEEEEEE

Answers

use M. A. T. H. W. A. Y.

Answer:

pretty sure it's the 2nd one

Step-by-step explanation:

In ΔMNO, the measure of ∠O=90°, the measure of ∠N=39°, and MN = 3 feet. Find the length of NO to the nearest tenth of a foot.

Answers

Answer:

3.3 feet

Step-by-step explanation:

the answer is 3.3 feet

Answer:

2.3 feet

Step-by-step explanation:

4. A box contains cards that are numbered from 1 to 100. What is the
probability of randomly selecting a number that is less than 12? *
1/100
1/12
11/100
12/100

Answers

Answer:

Hey! The answer would be 12/100

Step-by-step explanation:

Because you dont need to simplify the fraction, the only right answer there is 12/100.

What plus 45 equals 225?

Answers

Answer:

180+45=225

Step-by-step explanation:

225-45=180

Answer:

180

Step-by-step explanation:

225 - 45 = 180

19.5 is what percent of 150?

Answers

Answer:

The answer is 13

19.5 is 13% of 150

Answer:

13%

Step-by-step explanation:

Set up the following equation

150 * x = 19.5

Solve for x by diving 19.5 with 150 which will get you 13%

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