MATHEMATICS MIDDLE SCHOOL

Erin received the following scores on her last four spelling tests.21\25, 82%, 0. 8, 17\20.Which of these is Erin’s highest score?

Answers

Answer 1
Answer:

Answer:

The highest score is the last one 17/20

Step-by-step explanation:

Step 1:  Convert all to percentage

21/25 -> 0.84 * 100 -> 84%

82%

0.8 * 100 -> 80%

17/20 -> 0.85 * 100 -> 85%

Answer:  The highest score is the last one 17/20
Answer 2
Answer:

\huge\boxed{(17)/(20)}

We will convert each of the scores to a percentage.

(21)/(25)*(4)/(4)\to(21*4)/(25*4)\to(84)/(100)\to84\%

82\%

0.8*100\to80\%

\boxed{(17)/(20)}*(5)/(5)\to(85)/(100)\to\boxed{85\%}

So, the answer is the last option.

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Jeffrey needs 2.5 cups of oatmeal and 4.5 cups of water for his recipe. Which statement best describes how much of each ingredient Jeffrey needs to measure?

A.
Jeffrey should measure 2.5 cups of oatmeal and 4.5 cups of water so he has the correct amounts of each ingredient.

B.
Jeffrey should measure 5 cups of water and 2 cup of oatmeal since that makes a total of 7 cups of ingredients.

C.
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Answers

A, it is his duty as an American lol
A because that is exactly how much he needs.

Evaluate 5ny - 2c when n=-1/5, y= 6, and c= -3.

Answers

Answer:

Step-by-step explanation: plug 1/5 in for the "n", plug 6 in for the "y" and plug -3 in for the "c".  This gives you 5 x 1/5 which equals 1. So now you have 1 times 6 which equals 6. Lastly you subtract 2(-3) which is -6. This results in 6 - (-6) which equals 12.

What is 15 liters increased by 60%

Answers

100%=15
increae by 60%
100+60=160
160% of 15
15 times 1.60=24

24 liters

7/10+6/100=

how do solve this problem


Answers

We need to find the Lowest Common Denominator = LCD lowest is 100
10 x 10, 20, 30, 40, 50, 60, 70, 80, 90, 100
100 x 100, 200, 300, 400, 500, 600, 700, 800, 900, 1000. which is the lowest and common? 100
7/10  /100 how many times can 10 go into 100? 10 times. so we will multiply 10 time the numerator which is 7, and now will be 70/100
6/100 /100 how many times can 100 go into 100? 1 time. so we will multiply 1 time the numerator 6 which equals 6. 6/100
now add the new fractions. 70/100 + 6/100 = 76/100
(7)/(10)+(6)/(100)=(70)/(100)+(6)/(100)=(76)/(100)=0.76

If anyone know this please help me.

Answers

Answer:

verticale angles are congruent.

What is the solution to the system of equations?x + y = 5
x - 2y = 2

(_,_)

Answers

{  x + y = 5     * ( 2 )
   x - 2y = 2


2 x + 2 y = 10
   x - 2 y = 2
_____________
3 x = 12

x = 12 / 3

x = 4

For y :

x + y = 5

4 + y = 5

y = 5 - 4

y = 1 

S = ( 4, 1 )

hope this helps!
Multiply the second equation by -1 and add them together.

You get 3y=3
So y=1.

If y=1, x+1=5.
So, x=4.

(4,1)
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