MATHEMATICS MIDDLE SCHOOL

Mario ordered a pizza for dinner when it arrived, mario quickly ate 1/8 of the pizza.while mario went to go get napkins, his pet poodle ate 1/3 of the pizza.a.about what percent of the pizza is left

Answers

Answer 1
Answer:

Answer:  54.16% of pizza is left.

Step-by-step explanation:

Since we have given that

Part of pizza ate by Mario = (1)/(8)

Part of pizza ate by his pet = (1)/(3)

So, total part ate by them is given by

(1)/(8)+(1)/(3)\n\n=(8+3)/(24)\n\n=(11)/(24)

Part of pizza left is given by

1-(11)/(24)\n\n=(24-11)/(24)\n\n=(13)/(24)

Percentage of pizza left is given by

(13)/(24)* 100\n\n=(1300)/(24)\n\n=54.16\%

Hence, 54.16% of pizza is left.
Answer 2
Answer: 1/8 of the pizza is about 12% and 1/3 is about 33%.  So if 45% of the pizza was eaten by Mario and his dog, there is about 55% left.

(If 1/4 means 25% then 1/8 is half of that 12.5% exactly but I used 12% since we are estimating)

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cody spent half of his allowance on candy. to earn more money his parents let. him wash the car for $7. what is his weekly if he ended with $17

Answers

If x is the weekly allowance
1/2x+7=17
1/2x=10

x= $20
Cody normally gets $10 per week 17=7=10 times 2=20

Use signed numbers to solve. A helicopter descended 1200 feet, rose 800 feet, and then descended 450 feet. What was the net gain or loss in altitude? A. lost 2450 ft B. lost 850 ft C. gained 850 ft D. gained 2450 ft

Answers

B. Lost 850 ft
800-450= 350
1200-350=850

I hope I helped :D

How do you find the nearest hundredth of a decimal number?

Answers

Round up if the previous digit is 5 or above, leave it the same (only the hundreth digit, erase all the other thousandths and such) if it is 4 or below

Grant started a marathon at 8:00 A.M. He took 4 hours 49 minutes to complete the marathon. Whne did he cross the finish line

Answers

8:00 AM (starting point)

+ 4 Hours

9 AM
10 AM
11 AM
12 PM

+ 49 minutes 

12:49 PM
He finished the marathon at 12:49 Pm

A company makes concrete bricks shaped like rectangular prisms. Each brick is 10 inches long, 7 inches wide, and 5 inches tall. If they used 14,000in3 of concrete, how many bricks did they make?

Answers

Answer: There are 40 bricks they make.

Step-by-step explanation:

Since we have given that

Length of each brick = 10 inches

Width of each brick = 7 inches

Height of each brick = 5 inches

So, Volume of each brick = Length × Breadth × Height

Volume=10* 7* 5\n\nVolume=350\ in^3

Since, If they used 14000 in³ of concrete.

So, Number of bricks is given by

\frac{\text{Volume of concrete}}{\text{Volume of brick}}\n\n\n=(14000)/(350)\n\n\n=40

Hence, there are 40 bricks they make.

The volume of each block is

                           (10in x 7 in x 5 in) = 350 inches³ .

With  14,000 in³  of material, they could make

                       (14,000 in³) / (350 in³/block) = 40 blocks .

Can someone explain how to do number 3 please?! The answer is 1 over 32

Answers

Since we are doing flips of a coin, we can agree that each flip is independent of all of the other.

The probability that a coin lands on heads is 1/2, just as the probability that a coin lands on tails is 1/2.

Since each event is independent, we take the probabilities of the events and multiply them together to get the overall probability:

P(H) = 1/2
P(T) = 1/2

So:

P(H, T, H, H, H) = (1/2) x (1/2) x (1/2) x (1/2) x (1/2) = 1/32

The overall probability is 1/32.
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