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
MakcuM [25]
3 years ago
11

If 28% of a sum is $100.80, what is the sum?

Mathematics
1 answer:
lbvjy [14]3 years ago
7 0
Call the sum S. Then, you can use the definition of percentage to obtain an equation to find the value of S: 1) 28% = 28 / 100; 2) 28% of x = (28/100)x; 3) that is equal to $100.80 => (28/100)x = 100.8 => x = 100.8 * 100 / 28 => x = 360. You can verify that the 28% of 360 is 100.80: 360 * 28/100 = 100.80. <span>Then, the answer is $360.</span>
You might be interested in
Emaan charges a fixed amount for a bracelet, with an additional charge for each charm a customer adds to the bracelet. Write a l
DIA [1.3K]

Answer:

f(x) = y + (x*p)

Step-by-step explanation:

Since we are not given actual values we will need to make the function with only variables. Each variable will represent the following...

Fixed Cost: y

Cost per charm: p

Number of charms: x

Therefore, using the variables mentioned above we can combine them into the following linear function using the number of charms as our main input for our function...

f(x) = y + (x*p)

6 0
3 years ago
Could you help me to solve the problem below the cost for producing x items is 50x+300 and the revenue for selling x items is 90
s344n2d4d5 [400]

Answer:

Profit function: P(x) = -0.5x^2 + 40x - 300

profit of $50: x = 10 and x = 70

NOT possible to make a profit of $2,500, because maximum profit is $500

Step-by-step explanation:

(Assuming the correct revenue function is 90x−0.5x^2)

The cost function is given by:

C(x) = 50x + 300

And the revenue function is given by:

R(x) = 90x - 0.5x^2

The profit function is given by the revenue minus the cost, so we have:

P(x) = R(x) - C(x)

P(x) = 90x - 0.5x^2 - 50x - 300

P(x) = -0.5x^2 + 40x - 300

To find the points where the profit is $50, we use P(x) = 50 and then find the values of x:

50 = -0.5x^2 + 40x - 300

-0.5x^2 + 40x - 350 = 0

x^2 - 80x + 700 = 0

Using Bhaskara's formula, we have:

\Delta = b^2 - 4ac = (-80)^2 - 4*700 = 3600

x_1 = (-b + \sqrt{\Delta})/2a = (80 + 60)/2 = 70

x_2 = (-b - \sqrt{\Delta})/2a = (80 - 60)/2 = 10

So the values of x that give a profit of $50 are x = 10 and x = 70

To find if it's possible to make a profit of $2,500, we need to find the maximum profit, that is, the maximum of the function P(x).

The maximum value of P(x) is in the vertex. The x-coordinate of the vertex is given by:

x_v = -b/2a = 80/2 = 40

Using this value of x, we can find the maximum profit:

P(40) = -0.5(40)^2 + 40*40 - 300 = $500

The maximum profit is $500, so it is NOT possible to make a profit of $2,500.

3 0
3 years ago
If a statement is true, then it’s converse must be true as well. True or false
TEA [102]
Answer: true


Explanation: because if a statement is true then it’s convert
5 0
3 years ago
1. An amusement park gives away gifts to celebrate its grand opening. Every 2nd visitor will receive a
Mademuasel [1]

Answer:

Every 200 visitors, the visitor will receive all 4 gifts.

Step-by-step explanation:

With the given numbers, the lowest common number would be 200.

7 0
2 years ago
What is a fraction equivalent to -6/1
pashok25 [27]

Answer:

-18/3

Step-by-step explanation:

Multiply the denominator and numerator by the same whole number.

8 0
3 years ago
Read 2 more answers
Other questions:
  • 1. 11 1/6 =? 2. 2 9/10 =? 3. - 4/12 =? Please help me
    8·1 answer
  • Abigail is putting tiles on a table top. She needs 48 tiles for each of 8 rows. Each row will have 6 white tiles.
    6·1 answer
  • What is the sale price of a shirt that was originally $25 but that has been marked down by 33 percent
    9·1 answer
  • Jessie is 6 years older than Todd, and Todd is 2 years younger than Ryan.
    11·1 answer
  • Factor completely. y2 - 12y + 32 A. (y + 4)(y + 8) B. (y - 4)(y - 8) C. (y + 18)(y + 2) D. (y - 18)(y - 2)
    13·2 answers
  • Can someone please explain to me how to find y-intercept on a graph? I AM SO CONFUSED PLEASE HELP!!!
    5·1 answer
  • BRAINLIEST PLS HALP!!
    5·1 answer
  • A boat travels 102 miles in 5
    15·1 answer
  • The area of the triangle below is 4.5 square inches. What is the length of the base?
    12·1 answer
  • Please sum 1 help mee​
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!