MATHEMATICS MIDDLE SCHOOL

Last week Trent made 80 on his quiz. This week he made a 90. What is the percent of increase in his score? A.10%
B.12.5%
C.11%
D.15%

Answers

Answer 1
Answer: 90=80x
x=9/8=1.125
.125*100=12.5%
Answer 2
Answer: (A)10%
because 10+80 equals 90

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Tyler knows that the ratio of male to female horses on the farm is 2 to 3. If there are 12 male horses, how many female horses are there? 20 POINTS

Answers

Answer:

18 female horses.

Step-by-step explanation:

By proportion  2 : 3 = 12 : x   where x is the number of female horses.

12 / 2 = x / 3

2x = 3*12 = 36

x = 18.

You plant a tree that is 36 inches tall. After one year, the tree is 43 inches tall. Write an expression which describes the percent of increase in the trees height?

Answers

36 - 100%
43 - x  %

we multiply by cross ->  36 * x = 100 / 43 

we should remove '100%' from new value, because we find only increase.. no new value in percent.

x + 100 = (43 * 100)/36 

x =  4300/36 - 100
x = 119+ 16/36 -100
x = 19 +4/9
((h_(f)-h_(o)))/(h_(o)) *100

((43-36))/(36) *100

(7)/(36) *100

0.1944*100

19.44

19.44% increase

Covert 1 4/7 into a decimal and show/explain how you got your answer

Answers

Answer:

4/10 im smart im a teacher

Step-by-step explanation:

What is (1/3b)^3 simplified?

Answers

The answer is 1 2/7b.
1/3b multiplied by itself 3 times is 1 2/7b.

Jamila and Akiko had the same amount of money to spend. After Jamila spent $33 and Akiko spent$42, Jamila had 4 times as much money left as Akiko. How much money did each of them have in
the beginning?

Answers

Answer: $45

Step-by-step explanation: Let the amount of money be x ,

Then , after Jamila spent $33 , the remaining money is x-33,

Also , after Akiko spent $42 , the remaining money is x- 42,

since Jamila is now having 4 times as much money left as Akiko, we have

x - 33 = 4 ( x - 42)

x - 33 = 4x - 168

-33+168 = 4x - x

135 = 3x

Therefore ,

x = 45

PLZ help me in 5 mins!

Answers

Answer:

I really want to help you but I am really confused with those topics. I am very sorry.

Step-by-step explanation:

Answer: no

Step-by-step explanation:
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