Three-quarters of a number is 15.
Work out four-fifths of the number.

Answers

Answer 1

Answer:

16

Step-by-step explanation:

let the number be x , then

[tex]\frac{3}{4}[/tex] x = 15 ( multiply both sides by 4 to clear the fraction )

3x = 60 ( divide both sides by 3 )

x = 20 , then

[tex]\frac{4}{5}[/tex] × 20 = 4 × 4 = 16

Answer 2

Answer:

16

Step-by-step explanation:

let the number be x , then

\frac{3}{4} x = 15 ( multiply both sides by 4 to clear the fraction )

3x = 60 ( divide both sides by 3 )

x = 20 , then

\frac{4}{5} × 20 = 4 × 4 = 16


Related Questions

What is an equation for the translation of y = |x| down 8 units?

Answers

your answer would be 4

What’s the answer to m/3-2m/5=1/5

Answers

Answer:

m = - 3

Step-by-step explanation:

[tex]\frac{m}{3} - \frac{2m}{5} = \frac{1}{5}[/tex]

It is much easier to work with whole numbers, compared to fractions, hence one should remove the denominator of the fraction. This can be done by multiplying by the LCM (least common multiple). In this case, it is fairly obvious that the LCM of 3 and 5 is 15. Therefore multiply the entire equation by 15.

[tex]15*\frac{m}{3} - 15*\frac{2m}{5}=15*\frac{1}{5}[/tex]

Simplify

[tex]5m-6m=3[/tex]

[tex]-m=3\\m=-3[/tex]

whats the solution pls help

Answers

Answer:

1/x^7

Step-by-step explanation:

Answer:

1/x^7

Step-by-step explanation:

Convert the following equation to Slope-Intercept Form
HINT: Slope-Intercept Form is y = mx + b
y-8= 3(x + 5)

Answers

Answer:

y = 3x + 23

Step-by-step explanation:

Given the equation :

y - 8 = 3(x + 5)

We are to convert the equation to slope - intercept form:

Recall: general form of a slope - intercept model:

y = mx + c

Hence,

y - 8 = 3x + 15

y = 3x + 15 + 8

y = 3x + 23

Comparing :

y = mx + c

y = 3x + 23

do you know what is 25 x 100

Answers

Answer:

2500

Step-by-step explanation:

20x100=2000

5x100=500

2000+500=2500

:)

HELP ASAP

Select the real-world problem that could be solved using a proportion.

Answers

Answer: D

Step-by-step explanation:

D can be solved using 300/6 = x/10 making it a proportion

(Will mark brainliest) Please help as soon as possible for 30 points

Answers

Answer:

90

Step-by-step explanation:

a triangle's angles all add up to 180. take 51 and 39 away from 180 and you get 90

Answer: 90 degrees

Step-by-step explanation:

Theorem:

a+b+c=180 degrees

39 degrees + 51 degrees + x degrees = 180 degrees

39 + 51 = 90

180 - 90 = 90

Water along the Mississippi River is rising at a rate of 24.8 cm/hr. The top of a dock in the river currently sits only 1.2 meters above the water. How many hours will it take the water to reach the top of the dock

Answers

Answer:

4.84*10^-4hours

Step-by-step explanation:

Speed = Distance/Time

Time = Distance/Speed

Given

Distance = 1.2m = 0.012cm

Speed = 24.8cm/hr

Get the time;

Time = 0.012/24.8

Time = 4.84*10^-4hours

Hence it will take the water 4.84*10^-4hours to reach the top of the dock

A saving account earns 4.5 simple interest per year. If 650.00 is deposited and no withdrawals or deposits are made during one year how much interest will be earned after one year

Answers

Answer:

29.25 Interest

Step-by-step explanation:

Take the formula: I=PRT

The principal is 650.00, 4.5 is the rate, 1 year is the time, We do not know the interest.

Change the rate, 4.5 to 0.045 to help solve the problem.

Times 650.00, 0.045, and 1 together.

You will get 29.25, Which is the answer!

Booyah! You are done.

Hope this helps!

What is the equation of the line that passes through the point (5,1) and has a slope if 6/5

Answers

Answer:

y = 6/5x - 5

Step-by-step explanation:

Please let me know if you want me to add an explanation as to why this is the answer/how I got this answer. I can definitely do that, I just wouldn’t want to write it if you don’t want me to :)

The functions g and h are such that g(x)=2x+5 and h(x)=ax+b

Answers

the answer is : a=9 and b=-1

Evaluate 0.5m + 1.2m when m = 4

Answers

Plug in 4 for m.
So, 0.5(4)+1.2(4)
2+4.8
= 6.8.

Answer:6.8.

Step-by-step explanation: 0.5(4) + 1.2(4) 2 + 4.8= 6.8.

Can someone help with this.

Answers

A
Both would be considered exterior angles.

Use what you know about end behavior to match each function in standard form with its graph below.

Answers

Answer:

2=C

3=A

4=D

5=B

Step-by-step explanation:

Answer:

2=C

3=A

4=D

5=B

Step-by-step explanation:

Please hurry!!! Urgent!!!

Answers

Answer:

x=9

Step-by-step explanation:

-1+14x=12x+17

2x=18

x=9

Answer: x=9

Step-by-step explanation:

so the equation on top -1+14x= 125

and 12x+17= 125

What is the slope-intercept form of the equation of the line that passes through the points (9, 5) and (4, 1)?

Answers

Answer:

y=4/5x+-11/5

Step-by-step explanation:

might no be but im sleepy so

Answer:

y=4/5x−11/5

Step-by-step explanation:

Just took the test

.
If y = x +3,
find the value of y when x = 2​

Answers

Answer:

Y=-4

Step-by-step explanation:

y = 3x + 2

y = 3(-2) + 2

y = -6 + 2

y = -4

Answer:

Y=5

Step-by-step explanation:

Y=2+3

So that why y is 5

Please rate my comment I am new and I would lie to help others thankyou ♥

Can someone help me understand this

Answers

Answer:

Step-by-step explanation:

If we define the line QR to be some variable of distance 'x', we can use the relationship of cosine to figure out the length of QR.

Remember, cosine is adjacent of the angle divided by the hypotenuse of the angle. So, if we take this x value over the longest side (hypotenuse), we get the value of cos(theta).

cos(25) = x/7

Multiply both sides by 7 to get:

7*cos(25) = x

Let your calculator do the work to get:

x = 6.3

PLZ ANSWER QUICK IT WILL HELP A LOT!

Answers

The answer is B. X axis

Find the slope on the line

Answers

Answer:

Zero slope

Step-by-step explanation:

Answer:

1.3

Step-by-step explanation:

Each bag of skin contains 2.6 ft.³ of sand, how many bags of sand will need to be purchased to completely fill the sandbox?

Answers

Answer:skin?

Step-by-step explanation:

Piper opened a savings account with $1400 that pays no interest. She deposits an
additional $50 each week thereafter. How much money would Piper have in the
account 47 weeks after opening the account?

Answers

Answer:  Piper will have $3750  

Step-by-step explanation:

In this situation we will represent the total amount she have in the bank by y and the number of weeks by x

The whole situation can be represented by the the equation

  y = 1400 + 50x  where y is the total amount , 1400 is the initial amount Piper deposited , 50 is of course the amount Piper will deposit each week , and x is the number of weeks.

Now since they are looking for the amount Piper will have in his account, you have to input 47 for x and solve for y.

y = 1400 + 50(47)

y = 1400 + 2350

y = 3750

What is Becca’s speed in miles per hour?

Answers

Answer:

1.5 OR 1 1/2

Step-by-step explanation:

Convert the fractions into decimals.

9/10 = 0.9

3/5 = 6/10 = 0.6

Divide the decimals.

0.9/0.6 = 1.5

Convert back to fraction.

1.5 = 1 1/2

10. Which of the following describes two
triangles that are similar to one another?

Answers

Answer:

It's d

Step-by-step explanation:

i did it and got it right

I need help wit this

Answers

Answer:

$12.75

Step-by-step explanation:

Do $71.75 - $8.00. Next divide that by 5. Here you should get the "each hour" amount.

Answer: $12.75

Step-by-step explanation:

He paid ^^ per hour - $8.00

5x+2=7x-4. Plz answer my question

Answers

Answer:

x=3

Step-by-step explanation:

5x+2=7x−4  

5x+2−7x=7x−4−7x

−2x+2=−4  

−2x+2−2=−4−2

−2x=−6

-2x/2=-6/2

x=3

1 kilogram =2.2
1 stone=14 pound
change 42 kilogram into stones

Answers

Answer:

6.6 stones

Step-by-step explanation:

1kg=2.2 pounds=>42kg=2.2*42poumds=92.4pounds

1stone=14pounds=>92.4pounds=92.4÷14stones=6.6stones

Solve this system
5x – 4y + 2z = 21
-x - 5y + 6z=-24
--x – 4y + 5z =-21
O x = 5, y = -1, z = -4
0 x = 1, y = 5, z = -4
O x=-5, y = 1, z = -4
O x = -4, y = -1, z = 5

Answers

Answer:

Its the first option

Step-by-step explanation:

helppp ill mark u as brain list​

Answers

Answer:

It is hard to see the picture, but I think it is 6.

Step-by-step explanation:

I don't know if it's supposed to do with (n-2)180
Also please explain :D

Answers

Step-by-step explanation:

[tex] sum \: of \: interior \\ \: angels \: is  \: 2340 \:  degrees. \\

(n−2)⋅180=2340 \\

180n - 360=2340 \\ 180n = 2700 \\

n=15 \\

 

number \: of \: sides=15[/tex]

the polygon is 15 sided.

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