MATHEMATICS MIDDLE SCHOOL

What is x if 2+ 9/4x=20

Answers

Answer 1
Answer:

Answer:

x = 1/8

Step-by-step explanation:

Given: $ 2 + (9)/(4x) = 20 $

Multiplying by 4x throughout, we will have:

⇒ 8x + 9 = 80x

⇒ 9 = 72x

Dividing by 72,

⇒ x = $ (9)/(72) $

⇒ x = $ (1)/(8) $

Substitute x = 1/8 in the given equation and it will give us 20. That means the value of 'x' identified is correct.

So, x = $ (1)/(8) $ is the required answer.

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Need answer asap!!! will give brainliest and 5/5 !!Marcy left for school and felt like running. She ran for a while and then stopped to rest. After resting, she walked the rest of the way to school.

Click through and select the graph that best represents the story.

Answers

Answer:

Graph 4

Step-by-step explanation:

So since marcy ran we would expect a sharp line from the origin. After marcy ran, she rested for a while so we would expect a horizontal line(to show syes not moving) after the sharp line. Since she walked the rest of the way to school after the horizontal line we would expect a smaller line pointing upwards. This eliminates graphs 1,2,and 3. Hope this helps!

Why do some equations have the same variable on both sides?

Answers

some equations have the same variable on both sides because you are supposed to solve for that number.  for example 5x+4=11-2x for this example, so you dont have to deal with negatives, you would add 2x to both sides first.  and you would do that so that  you can cancel out the variable on the right side so that it is only on the left side so you end up with, 7x+4=11.  the next thing you would do is subtract 4 from both sides so that you can get the variable by itself on one side so it would look like this, 7x=7.  and to finish it off, you would divide both sides by 7, and get x.

out of the 25 students in Mrs.Green's class 19 have a pet What percent of the students in Mrs.Green's class have a pet

Answers

method\ \#1\n\n(19)/(25)*100\%=(19*4)\%=\boxed{76\%}\n\nmethod\ \#2\n\n \begin{array}{ccc}25&-&100\%\n\n19&-&p\ \%\end{array}\ \ \ |cross\ multiply\n\n\n25\cdot p=100\cdot19\n25p=1900\ \ \ \ \ |divide\ both\ sides\ by\ 19\n\boxed{p=76\ (\%)}

Final answer:

To find the percentage of students in Mrs. Green's class having a pet, divide the number of students with pets by the total number of students and multiply by 100. Therefore, 76% of the students in Mrs. Green's class have a pet.

Explanation:

This question involves the concept of percentage in mathematics. To find out what percent of students in Mrs.Green's class have a pet, you can follow these steps:

  1. Identify the total number of students which is 25.
  2. Identify the number of students who have a pet which is 19.
  3. Divide the number of students with pets by the total number of students: 19 ÷ 25 = 0.76.
  4. Now, to convert this number into a percentage, multiply it by 100: 0.76 × 100 = 76%. So, 76 percent of the students in Mrs.Green's class have a pet.

Learn more about Percentage here:

brainly.com/question/30697911

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Michael and Erica went apple picking.michael's basket was 1/8 full.erica picked 3 1/2 times as Michael.how many baskets of apples did Erica pick?

Answers

she picked about 1 more basket than him because 1/8 x 3.5 is 0.4375

(19b-1)-9 (2b+4)=-7

plz show work step by step (i give thank yous)​

Answers

Answer:

b=30

Step-by-step explanation:

19b-1-9(2b+4)=-7\n\Leftrightarrow 19b-18b-36=-6\n\Leftrightarrow b=30

What times 5.25 equals 12

Answers

well that would not work 5.25x2=10.5  5.25x3=15.75
yes it would work:)

divide 12 by 5.25.
yes its hard and the answer is 2.285714286
all because its hard doesn't mean it would not work 
says my calculator:D
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