MATHEMATICS MIDDLE SCHOOL

Harry purchased some fruits and sold 1/2 of them at a gain of 60% and 1/4 of them at again of 20%, the rest were spoiled. Find his gain or loss percent on the whole.

Answers

Answer 1
Answer:

Answer:

40% gain.

Step-by-step explanation:

Suppose he bought 100 fruit at a cost of $40.

He sold  1/2 ($20 ) for 20 * 1.6 = $32.

He sold 1/4 ($10) for 10*1.2 = $24.

Total revenue  = $56 dollars so he made 56 - 40 = $16 profit.

percent gain = 16 * 100 / 40

= 40 %.

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The field at Harrington Middle School is 70 yards long and has a diagonal measure of 84 yards. What is the perimeter of the triangular field?

Answers

Answer:

200.43 yds

Step-by-step explanation:

84 x 84 = 7,056

70 x 70 = 4,900

7,056 - 4,900 = 2,156

√(2156) = 46.43

84 + 70 + 46.43 = 200.43 yds

Use the given function f(x) = (x-4) +8x to solve f(-2)A. 18
B. 14
C. 22
D. -22

Answers

we just need to substitute the x by -2 in the function:
f(x) = (x - 4) + 8x
f(-2) = (-2 - 4) + 8(-2)
f(-2) = (-6) - 16
f(-2) = -6 - 16
f(-2) = -22

Madison loves her stuffed dolphin toy. The toy is 27 inches long. If her brother came and sliced the dolphin in half what would the size of the dolphin be?

Answers

27 divided by two(half) =13.5 inches :)
The size of the dolphin would be 13.5 inches long because half of 27 is 13.5.

27/2 = 13.5

sophia buys 4/5 pound of sunflower seeds.she eats 1/10 pound of seeds each day.how many seeds will it take sophia to eat all the sunflower seeds

Answers

I believe you mean
"how many seeds [days] will it take sophia to eat all the sunflower seeds"

It will take 8 days
40 seeds per day.............................hope it helped

3+-5+9+-6 Evaluate what the total score

Answers

3+-5+9+-6
= 3-5+9-6
= (9+3) -5 -6
= 12-5-6
= 1.

The final answer is 1.

Hope this helps~
3 + (-5) + 9 + (-6)
= 3 - 5 + 9 - 6
= 1

How do I do this problem?

Answers

Answer:

Kate finished the race in 52 seconds

Alexia finished the race in 58 seconds

Trina finished the race in 49 seconds

Step-by-step explanation:

From this work problem we can set up these series of equations:

k+a+t=159\na=k+6\nt=k-3

First we need to create only one variable in the first equation in order to solve it, so we can substitute in the other equations into the first one. That would look like this

k+(k+6)+(k-3)=159

Then we can simplify this

3k +3=159\n3k=156\nk=52

Now that we solve for Kate's time, we can use the other 2 equations to find the times of Alexia and Trina

Using the equation for Alexia's time and plugging in Kate's time gives us

a=52+6\na=58

Using the equation for Trina's time and plugging in Kate's time give us

t=52-3\nt=49
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