MATHEMATICS MIDDLE SCHOOL

How do you find percentages?

Answers

Answer 1
Answer: To calculate percentage increase, use the following method:

First, Work out the difference (increase) between the two numbers you are comparing.

Increase = New Number - Original Number

Now, divide the increase by the original number and multiply the answer by 100.

% increase = Increase ÷ Original Number × 100.

Also, If your answer is a negative number it is a percentage decrease.


To calculate percentage decrease, use this method:

First, Work out the difference (decrease) between the two numbers you are comparing.

Decrease = Original Number - New Number

Then, divide the decrease by the original number and multiply the answer by 100.

% Decrease = Decrease ÷ Original Number × 100

Also, If your answer is a negative number then it is a percentage increase. 

If you wish to calculate the percentage increase or decrease of several numbers then I recommend using the first formula.  Positive values indicate a percentage increase whereas negative values indicate percentage decrease.

Related Questions

A parallelogram has an area of 396 square centimeters and a height of 18 centimeters.What is the length of the base of the parallelogram?
Which statement is tru
If y=-4 when x=10, determine y when x=5.
48% of what number is 108? A. 44.4 B. 51.84 C. 225 D. 5184
49/7 as a mixed number

B+7=10
substitution method

Answers

Answer:

B =3

Step-by-step explanation:

B + 7 = 10

-7 -7

B = 3

I hope this helps

Over the last week, the daily low temperature in degrees Fahrenheit have been -4, 6.2, 18 1/2, -5/9, 21, -1/4, and 1.75. List these three numbers in order from greatest to least.

Answers

-5/9
-4
-1/4
1.75
18 1/2
21
These because negatives should always go first, then go up to the positives 

-2 5/22 as a decimal

Answers

-2.227273 is the decimal of -2 5/22
-2. 227273 thats it 

just divide 5/22 dividing

What is the domain of the square root function graphed below ?

Answers

The graph shows that x never becomes < 0. In other words the point (-1,0) is not part of the graph. So D is your only answer.

Answer:

Option D is correct.

Step-by-step explanation:

Given: A graph.

We know that The domain of a function is the complete set of possible values of the independent variable.

From given graph x is independent variable.

Generally Domain for the Square root function is all non negative real numbers.

So, from given graph and general domain.

Domain of given graph = x ≥ 0

Therefore, Option D is correct.

How many 29000000 ml are l

Answers

1l=1000=>x l=29000000=>x=29000000:1000=>x=29000

29000000mL equals 29000L


K            H             D           U           D             C            M

Km        Hm          Dam        m         Dm          Cm         Mm

KL        HL            DaL         L         DL           CL           ML

Kg       Hg            Dag         g          Dg           Cg           Mg

Kilo     Hacto       Daca                   Deci        Centi        Milli

100        10            1           0           0.1         0.01       0.001 

↑ here's the chart that can help you.

If that's hard to memorize, then use

 ' King Henry Died Unusually Drinking Chocolate Milk.'

#1 What is the value of the expression 7–3? Answers: A. –21B. - 1/343 C.1/343 D. 343 

#2What is the value of the expression 1/5^-5? Answers: A. 1/3125 B.1/25 C.25 D. 3125

 #3What is the value of the expression 2/4^-3?Answers: A. 1/32 B. 1/6 C.128 D.256  

#4  What value of k solves the equation? K^-2=1/64 Answers: A.1/8 B. 8 C. 32 D. 128

 #5 What value of n solves the equation? 4^N= 1/64   Answers: A. –3   B. 3   C. 16   D. 256

Answers

First question

The given expression is

7^(-3)

Which can also be written as

(1)/(7^3)= (1)/(343)

Therefore the correct option is C.

2.

The given expression is

(1)/(5^(-5))

Which can also be written as

5^5 = 3125

So the correct option is D

3.

The given expression is

(2)/(4^(-3))

Which can also be written as

2*4^3 = 2* 64=128

And the correct option is C

4.

The given equation is

k^(-2) = (1)/(64) \n k^2 = 64 \n k^2 = 8^2 \n k=8

So the correct option is B

5.

The given equation is

4^N = (1)/(64) \n 4^N = 4^(-3) \n N =-3

And the correct option is A .
\#1\ \ \ 7^(-3)= (1)/(7^3) = (1)/(343)\ \ \ \Rightarrow\ \ \ Ans.\ C\n \n \#2\ \ \ (1)/(5^(-5))=5^5=3125\ \ \ \Rightarrow\ \ \ \ Ans.\ D\n \n \#3\ \ \ (2)/(4^(-3))=2\cdot4^(3)=2\cdot 64=128\ \ \ \Rightarrow\ \ \ Ans.\ C\n \n\#4\ \ \ K^(-2)= (1)/(64) \ \ \Rightarrow\ \ \ (1)/(K^2) = (1)/(64)\n\n .\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ K^2=64 \ \ \Rightarrow\ \ K=8\ \ \Rightarrow\ \ Ans.\ B\n \n

\#5\ \ \ 4^N= (1)/(64)\ \ \Rightarrow\ \ \ 4^N=4^(-3)\ \ \ \Rightarrow\ \ \ N=-3\ \ \ \Rightarrow\ \ \ Ans.\ A
Other Questions
Hank bought 5 CDs for $64.75. If each CD cost the same price, how much did each cost?
Help last question for math What is: -3/8 divided by 7/12?
-PLEASE HURRY- this is the third time I’ve asked this question and no one has given me an answer.How do I evaluate/solve multi-step expressions?
Sir Dwayne is in charge of dragon designs at the King's ToyFactory. He hopes that his new designs will please the king*Your Highness," he says. "I have the plans for the toydragons. If it pleases you, every 3rd dragon shall billowclouds of smoke through its nostrils. every 4th dragon shallbreathe fire, every 6th dragon shall have glowing eyes, andevery 8th dragon shall have a tail with spikes on it. i shailmake 100 dragons." The king asks. Sir Dwayne, how manydragons shall have more than one of thesecharacteristics?" Sir Dwayne doesn't have the answer. Canyou help him answer the king before he is thrown into thedungeon?