MATHEMATICS MIDDLE SCHOOL

Latasha earned 18 points on her quiz. If 24 points is equivalent to a score of 100% what two proportions could she use to calculate her percent score?

Answers

Answer 1
Answer: Given:
18 points on her quiz
24 points is equivalent to 100%

18 is to 24 or 18/24
x is to 100% or x/100%

18/24 = x/100%

18 * 100% = 24x
1800% = 24x
1800%/24 = x
75% = x

18/24 = 75%/100%
18 * 100% = 24 * 75%
1800% = 1800%
Answer 2
Answer:

Answer:

Step-by-step explanation:

Given:

18 points on her quiz

24 points is equivalent to 100%

18 is to 24 or 18/24

x is to 100% or x/100%

18/24 = x/100%

18 * 100% = 24x

1800% = 24x

1800%/24 = x

75% = x

18/24 = 75%/100%

18 * 100% = 24 * 75%

1800% = 1800%

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Is 1/2% equal to 50% why or why not?

Answers

p\%=(p)/(100)\n\n(1)/(2)\%=((1)/(2))/(100)=(1)/(2)\cdot(1)/(100)=\boxed{(1)/(200)}\n\n50\%=(50)/(100)=(5)/(10)=\boxed{(1)/(2)}\n\n(1)/(200)\neq(1)/(2)\n\nthrefore\ the\ answer:\boxed{(1)/(2)\%\neq50\%\to(1)/(2)\%\ is\ not\ equal\ 50\%}
No because 1/2% is half of one percent and 50% is half of the full 100%

Estimate the solution to the system of equations.
2x+3y=6
-4x+3y=12

Answers

The solution is:

x=-1, y=2(2)/(3)

Step-by-step explanation:

Given

2x+3y=6     Eqn 1

-4x+3y=12     Eqn 2

Subtracting equation 2 from equation 1

2x+3y-(-4x+3y)=6-12\n2x+3y+4x-3y=-6\n6x=-6\nDividing\ both\ sides\ by\ -6\n(6x)/(6)=(-6)/(6)\nx=-1

Putting x=-1 in equation 1

2x+3y=6\n2(-1)+3y=6\n-2+3y=6\n3y=6+2\n3y=8\nDividing\ both\ sides\ by\ 3\n(3y)/(3)=(8)/(3)\ny=2(2)/(3)

The solution is:

x=-1, y=2(2)/(3)

Keywords: Linear equations

Learn more about linear equations at:

#LearnwithBrainly

Whats the answer for 3=2x2+b

Answers

muliply 2×2
your answer will be 3=4+b
subtract the 4 from both sides.
b=-1
if im correct..

3 = (2)(2)+b

Simplify both sides of the equation

3 = (2)(2)+b

3 = 4+b

3 = b+4

Flip the equation

b+4=3

Subtract 4 from both sides

b+4-4=3-4

b= -1


I hope that's help !

What percent of the jellybean are either blue or red show work please

Answers

Red                              Blue
     _                                   _
0.46                              0.23
or                                    or
0.46666666...                 0.23333333...
                  I think this is what it is. If you need to round it----> Red: 0.47 Blue:  0.23
 

a park is 4 times as long as it is wide. if the distance around the park is 12.5 kilometers, what is the area of the park?

Answers

So, first, what are the two sides?

let's call then x and y

we know that 2(x+y)=12.5 (that's the distance around)

so that means that x+y=6.25 (I just divided both by 2)

now, x=4y (from "4 times as long as it is wide")

so we can substitute:

x+4x=6.25

5x=6.25

x=1.25

so one side, is 1.25 and the other will be 1.25*4=5

and for the area we multiply the two:

1.25*5=6.25 square kilometers, and this is the answer!

The Area of the park is 6.25 square kilometers.

  • Let the wide = X
  • The length = 4X (the length is 4 times long as it is wide)

Further Explanation

Therefore, we should have:

To determine the perimeter of the rectangle = 2 x (length + wide)

P = 2 (L + W)

P = 2L + 2W

Recall the distance around the park is 12.5,

Hence,

= 12.5 = 2 (4x) + 2 (x)

= 12.5 = 8x + 2x

= 12.5 = 10x

X = (12.5)/(10)

X = 1.25

To determine the area, the formula for area is (A = W x L)

A = X x (4X)

A = 4X^(2)

A = 4 x (1.25)^(2)

A = 4 x (1.25 x 1.25)

A = 4 x 1.5625

A = 6.25 square kilometers

Thus, the area of the park is 6.25 square kilometers.  

LEARN MORE:

  • A park is 4 times as long as it is wide. if the distance around the park is 12.5 kilometers, what is the area of the park brainly.com/question/768779
  • A park is 4 times as long as it is wide. if the distance around the park is 12.5 kilometers, what is the area of the park  brainly.com/question/286278

KEYWORDS:

  • square kilometers
  • a park is 4 times
  • wide
  • area of a rectangle
  • perimeter of a rectangle
  • area of the park

11 is what percent of 55

Answers

The number that is 20 percent of 55 is 11.

We have,

To find what percent 11 is of 55, we can set up the following proportion:

11/55 = x/100

To solve for x, we can cross-multiply:

11 x 100 = 55 x x

1100 = 55x

Now we can divide both sides of the equation by 55:

1100/55 = x

Simplifying, we get:

20 = x

Therefore,

11 is 20% of 55.

Learn more about percentages here:

brainly.com/question/11403063

#SPJ6
11    x
55   100
20

11 times 100/55=20
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