MATHEMATICS MIDDLE SCHOOL

Please, help I don’t understand what im supposed to do.

Answers

Answer 1

Answer:

Answer:

16,800 votes.

Step-by-step explanation:

In the singing competition 42,000 votes were counted.

The winner received 3/5 of the votes.

The part of the votes that the winner did not receive was 1 - 3/5 = 2/5

So the winner did not receive 2/5 of 42,000 votes which is equivalent to:

$(2(42,000))/(5)$ = 16,800 votes.

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Find the factored form of 18n+12

Answers

factored: 6(3n+2)

6 is the greatest common factor of 18n and 12 so you change it to distributive property by factoring it to 6(3n+2)
if you distribute 6(3n+2) you get 18n+12

A scale drawing of Jack's living room is shown below:If each 2 cm on the scale drawing equals 10 feet, what are the actual dimensions of the room?

Answers

are there any options? like is it multiple choice or not?

A positive integer is 28 more than 3 times another. Their product is 580. Find the two integers

Answers

10 and 58

10*58=580

10*3+28=58

0.25k + 1.5 − k − 3.5
Combining like terms with rational coefficients

Answers

Answer:

- 0. 75 k - 2 .

Step-by-step explanation:

Given : 0.25k + 1.5 − k − 3.5

To find : Combining like terms with rational coefficients.

Solution : We have given 0.25k + 1.5 − k − 3.5.

On combining like term

0.25 k - k + 1.5 - 3.5.

- 0. 75 k - 2 .

Therefore, - 0. 75 k - 2 .

−0.75k−2 is the answer to this equation

The point X : (19, 7) is dilated with a scale factor of k = 18 with its centerof dilation at point C with coordinates (12, 26) . What are the coordinates of X′ ?

Answers

Answer:multiple

Step-by-step explanation:

Research

On the last day of school, Mrs. Awesome gave jelly beans to her class. She gave each boy as many jelly beans as there were boys in the class. She gave each girl as many jelly beans as there were girls in the class. She brought $400$ jelly beans, and when she finished, she had six jelly beans left. There were two more boys than girls in her class. How many students were in her class?

Answers

Answer:

28 students

Step-by-step explanation:

Let x be the number of girls in the class. There were two more boys than girls in her class, then the number of boys is x + 2.

Mrs. Awesome gave each boy as many jelly beans as there were boys in the class, so each of x + 2 boys got x + 2 jelly beans, so

Number of boys = x + 2

Number of jelly beans each boy got = x + 2

Total number of jelly beans all boys got = (x + 2)(x + 2)

Mrs. Awesome gave each girl as many jelly beans as there were girls in the class, so each of x girls got x jelly beans, so

Number of girls = x

Number of jelly beans each girl got = x

Total number of jelly beans all girls got = (x)(x)

Hence,

Total number of jelly beans class got = (x + 2)(x + 2) + (x)(x)

Mrs. Awesome brought 400 jelly beans, and when she finished, she had six jelly beans left, so she gave 400 - 6 = 394 jelly beans to the calss.

So,

$(x+2)(x+2)+(x)(x)=394\n \nx^2+2x+2x+4+x^2=394\n \n2x^2+4x+4-394=0\n \n2x^2+4x-390=0\n \nx^2+2x-195=0\n \nD=2^2-4\cdot (-195)=4+780=784\n \n√(D)=28\n \nx_(1,2)=(-2\pm 28)/(2\cdot 1)=-15,\ 13$

Number of girls cannot be negative, so x = 13, x + 2 = 15 and total number of students is 13 + 15 = 28

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