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

Answers

Answer 1
Answer: 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. Then, the answer is $360.

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6w^3 - 13 the GCF ? or is this a prime?

Consider the following pair of equations: x + y = −2
y = 2x + 10

If the two equations are graphed, at what point do the lines representing the two equations intersect?

(−4, 2)
(4, 2)
(−2, 4)
(2, 4)

Answers

hellooo..
my answer is (-4,2)

1500 soldiers in a fort have provision for 48 days.After 13 days few soldiers join them and the food lasts 25 days how many soldiers join

Answers

Answer: This is a problem of inverse variation, where the number of days that the food lasts is inversely proportional to the number of soldiers in the fort. We can use the formula:

d = k / s

where d is the number of days, s is the number of soldiers, and k is a constant of proportionality. We can find the value of k by using the initial information:

48 = k / 1500 k = 48 * 1500 k = 72000

Now we can use the information after 13 days to find the new number of soldiers. Let x be the number of soldiers who joined the fort. Then we have:

25 = 72000 / (1500 + x) 25 * (1500 + x) = 72000 37500 + 25x = 72000 25x = 34500 x = 1380

Answer: The number of soldiers who joined the fort after 13 days is 1380.

You are going to pull two cards from a standard deck of 52 cards (without replacement) and record whether you got a face card (jack, queen, king, or ace) or a number card (2-10). Which list of events correctly makes up the sample space?

Answers

Answer:

The list of event (pulling a face card,F or a number card, N) that correctly makes up the sample space when a card is drawn without replacement is;

FF

FN

NF and

NN

Step-by-step explanation:

Here we have the definition of a sample space as one which has all possible outcomes

Therefore, the list of events that correctly makes up the sample space of events when you pull out two cards we have either a face card F or a number card N, and the sample space is;

FF

FN

NF and

NN

Where the likelihood of each outcome changes as the number of face cards and number card changes as each card is drawn without replacement.

Answer:

just took the test, the correct answer is:

B) two number cards, two face cards, one number card and one face card

Complete the statement. –5 + = –5

A.5

B.–5

C.0

D.–1

Answers

-5+  =-5

Replace the blank place by x

-5+x=-5

Simplify both sides of the equation

x-5=-5

Add 5 to  both side sides

x-5+5=-5+5

x= 0


Answer : C


I hope that's help !


The sum of two numbers is 29. If thelarger number is 2 less than three times
the smaller number, what is the smaller
number.

Answers

The smaller number is 7.75.

What is an Equation?

An equation is a mathematical statement formed when two expressions are equated using an equal sign.

The equations are useful in determination of unknown parameters.

The equations are of various types, such as Trigonometric equations, quadratic equations.

The system of equations are used to solve complex problems.

Let the smaller number is x.

The larger number is 2 less than three times the smaller number

Then the larger number is 3x -2

The sum of the two numbers is 29

The sum is the output of the mathematical operation, Addition.

The equation formed is :

3x -2 + x = 29

Grouping the variables and the constants

4x = 31

Dividing both side of the equation by 4

x = 7.75

The value of the smaller number is obtained.

To know more about Equation

brainly.com/question/10413253

#SPJ2

Answer: 7

Step-by-step explanation:

Two angles are complementary. They have measures of (7x + 2)° and (3x – 2)°, respectively. What is the value of x?180
90
9
10

Answers

Answer:

Option (c) is correct.

The value of x is 9.

Step-by-step explanation:

Given :  Two angles are complementary. They have measures of (7x + 2)° and (3x – 2)°, respectively.

We have to find the value of x.

Two angles are said to be complementary if the sum of measure of angle is 90°.

Given (7x + 2)° and (3x – 2)° are complementary angles.

That is sum of (7x + 2)° and (3x – 2)° is 90°

⇒ (7x + 2)° + (3x – 2)° = 90°

⇒ 7x + 2 + 3x - 2 = 90

⇒ 10x = 90

⇒ x = 9

Thus, the value of x is 9.

Hence, option (c) is correct.

7x+2+3x-2=90\n 10x=90\n x=9