45 is 15% of what number

Answers

Answer 1

Answer: 45 = 15% of number
45 = 15% × n
15% = $(15)/(100)$ = 0.15

45 = 0.15n

$(45)/(0.15)$ = $(0.15n)/(0.15)$
0.15 and 0.15 cancels out

300 = n

15% of 300 is 45

45 is 155 of 300

Answer 2

Answer: 15% of a number is 45
15% × x = 45
x = 45 ÷ 15%
x = 45 ÷ 15/100
x = 45 × 100/15
x = 4500/15
x = 300

Check:
15% × 300
= 15/100 × 300
= 15 × 3
= 45

45 is 15% of 300.

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Kathleen had a bag of candy-coated chocolates. Of the 60 candies in the bag, 20% were red, 30% were orange, 30% were green, and 20% were blue. Of the blue ones, 20% had a damaged candy coating. Approximately how many of the blue ones had a damaged candy coating?

Answers

The percentage is calculated by dividing the required value by the total value and multiplying by 100.

Requiredpercentagevalue = a

total value = b

Percentage = a/b x 100

The number of damagedbluecandies is 4.

What is a percentage?

The percentage is calculated by dividing the required value by the total value and multiplying by 100.

Example:

Requiredpercentagevalue = a

total value = b

Percentage = a/b x 100

Example:

50% = 50/100 = 1/2

25% = 25/100 = 1/4

20% = 20/100 = 1/5

10% = 10/100 = 1/10

We have,

Totalnumber of candies = 60

Number of bluecandies = 20% of 60

This means,

= 20/100 x 60

= 12

The number of damaged blue candies.

= 20% of 20

= 20/100 x 20

= 4

Thus,

The number of damagedbluecandies is 4.

Learn more about percentages here:

brainly.com/question/11403063

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60*20% are red
60*30% are orange
60*30% are green
60*20% are blue = 12 * 20% = 2.4 blue candy chocolates that are damaged

The high school band and chorus are putting on a spring concert. The two groups together want to perform no more than 15 songs and the concert has to be 60 minutes or less in length. Each piece the band performs is about 5 minutes in length. Each piece the chorus sings is about 3 minutes in length. Which system of inequalities best represents the number of songs the band performs (x) and the number of longs the chorus performs (y) for the concert?

Answers

Answer:

Step-by-step explanation:

x = band songs

y = chorus songs

x + y < = 15 (thats less then or equal to)

5x + 3y < = 60 (thats less then or equal)

How do you use numerical expressions to solve real-world problems

Answers

Numerical expressions is an algebraic expressions or mathematical expressions.
In solving real-word problems, it is very important to know how to translate word problems into numerical expressions in order to solve the problem.
We cannot find what is asked in the problem if we will translate it into numerical expressions.
In translating, we will be able to make an equation and can now start to solve for a variable.
We will use these numerical expressions to make an equation which leads us in solving the variable. And this variable can be the answer or it can lead us to the answer to the problem.

What is 8.525 rounded to the nearest tenth

Answers

the answer would be 9 because you have to see the number after the decimal point is bigger than 5 and if its 5 you add one to the number before the decimal

8.525 rounded to the nearest tenth is 8.500

Demostrati ca mijloacele laturilor unui patrat sunt varfurile altui patrat

Answers

if you are looking for a translation it is this

"Demostrati ca mijloacele laturilor unui patrat sunt varfurile altui patrat"

"Proved that means sides of a square are another square tips."

Solve the systems of equations.

Answers

Answer:

x = -1 and y = -1

Step-by-step explanation:

Solve 3x+3y=−6;−x+y=0

Steps:

I will solve your system by substitution.

−x+y=0;3x+3y=−6

Step: Solve−x+y=0for y:

−x+y+x=0+x(Add x to both sides)

y=x

Step: Substitutexforyin3x+3y=−6:

3x+3y=−6

3x+3x=−6

6x=−6(Simplify both sides of the equation)

−6

(Divide both sides by 6)

x=−1

Step: Substitute−1forxiny=x:

y=x

y=−1

Answer:

x=−1 and y=−1

if you isolate y in the bottom equation youll see that x=y so if you plug in y for x in the top equation youll get 6y=-6 then divide both sides by 6 to get y=-1 and since y=x x=-1

so it would be the last option where x and y both equal -1

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