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
topjm [15]
3 years ago
14

If 28% of a sum is 100.80 what is the sum

Mathematics
1 answer:
Sveta_85 [38]3 years ago
4 0
$360.00*.28= 100.80 

<span>Or do a portion  </span>

<span>28%/100%=100.8/x </span>

<span>Then cross multiply </span>

<span>10080=28x </span>

<span>x=360</span>
You might be interested in
Umm it’s to question just label it a and b
xxMikexx [17]

A) Scale of map is 1: 30,000

This is assuming that it meant 1 centimetre = 30,000 metres, for it gives no other information.

Multiply 1 with 30,000: 30,000 x `1 = 30,000

30,000 metres is your answer.

B) Scale is 1 inch: 6 miles. You are given 2.5 inches.

Remember that 1 inch = 6 miles.

Multiply 2.5 to both sides: (2.5) * 1 inch = (2.5) * 6 miles

2.5 inch = 2.5 * 6 miles

2.5 inch = 15 miles

15 miles is your answer.

~

3 0
3 years ago
Read 2 more answers
The population of a community is known to increase at a rate proportional to the number of people present at time t. The initial
maks197457 [2]

Answer:

The initial population P0 is 7500

Step-by-step explanation:

First of all, we are told that the population is proportional to time. This means that as time goes by, the population will increase. This type of relationship between two variables has the form of a linear equation expressed as:

y = mx + b,

where m is the slope of the curve and b is the intercept of it.

In this case we can state the following equation:

P = mt + P0

Where P is the population at a certain time "t", "m" is the slope of the curve, "t" is the time (this is the independent variable) and P0 is the intercept of the curve and represents the initial population.

Once we state the equation, let's see what we know:

If t = 0, then P = P0

If t = 3, then P = 12000 just as we are told

and if t = 5, then P = 2 P0 because after five years the population has doubled compared to the initial population (P0).

From the definition of the slope of the curve:

(Y2 - Y1)/(X2-X1) = m

and using the data described before we can formulate the slope value:

m = (2P0 - P0)/(5-0)

m = (2P0 - P0)/5

m = P0/5

Then, let's replace the value of m in the following equation:

P = mt + P0

12000 = (P0/5) × 3 + P0 → This is the equation presented when 3 years has gone by and we now have a population of 12000.

12000 = (3/5) P0 + P0

12000 = (8/5) P0

12000×5/8 = P0 = 7500

Then we can calculate the value of the slope m:

m = P0/5

m = 7500/5 = 1500

Now, knowing the value of m and the initial population P0 we are able to calculate the population at any value of "t".

6 0
3 years ago
What is the equation of a vertical line passing through (−5, −2)? a: x = −5 b: x = −7 c: y = −3 d: y = −2
drek231 [11]

The answer is

A : x=-5

6 0
3 years ago
PLEASE Help with number 14
scZoUnD [109]

14) The sum of anything and its additive inverse is zero. (That is the definition of additive inverse.) The appropriate choice is ...

... A) equal to 0

8 0
3 years ago
Write A story that could represent This problem 2/6 x 3/4
stellarik [79]

Answer:

Bob at the store

Step-by-step explanation:

Bob is at a store and wants to buy a banana, last time he checked it costed 2/6 of a dollar. Now it costs 3/4 times more.

3 0
2 years ago
Read 2 more answers
Other questions:
  • Frank has been driving at a constant speed for 3 hours, during which time he traveled 195 miles. Frank would like to know how lo
    15·1 answer
  • Explain how you can compare the cost of two items that are different sizes.
    5·2 answers
  • Please answer me x and y ​
    8·2 answers
  • What is the slope of the line through (-9.6) and (-6,-9)?
    15·2 answers
  • Find the equation of this line.<br>HELP​
    13·1 answer
  • Suppose the test scores on an exam show a normal distribution with a mean of 82 and a standard deviation of
    9·1 answer
  • ACTIVITY #1:
    5·1 answer
  • (08.01)
    9·1 answer
  • A company has 76 employees of whom x are members of a union. How many employees are not union members?
    11·1 answer
  • Hello hello helppppppppppppp
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!