plz I need this help 30 points What is the approximate percent decrease when a fish count goes down from 850 to 500?

Answers

Answer 1

Answer: Increase=New number - Original number
Increase=500-850=-350
%increase=Increase/original number X 100
%increase= -350/850 X 100 = -41.18%

Number is negative because it is a percentage decrease.

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jim’s sleeping bag is 5 feet long,Jorge’s sleeping bag is 2 yards long,And stevens sleeping bag is 68 inches long,Whose sleeping bag is longer

Answers

Jorges sleeping bag is longer because 2 yards is 72 inches.

Final answer:

After converting all the sleeping bag lengths to inches, we find Jim’s bag is 60 inches, Jorge's is 72 inches, and Steven's is 68 inches. Therefore, Jorge's sleeping bag is the longest.

Explanation:

Before comparing the lengths of the sleeping bags, we need to make sure they are in the same units. We will convert all lengths to inches because this will give us the most precise comparison. Since 1 foot is equal to 12 inches, Jim’s sleeping bag is 60 inches long (5 feet * 12 inches/feet). One yard is 36 inches, so Jorge’s sleeping bag is 72 inches long (2 yards * 36 inches/yard). Steven's sleeping bag is already given in inches as 68 inches. By comparing these values, we can conclude that Jorge's sleeping bag is the longest.

Learn more about Length comparison here:

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The ratio of the heights of two similar solids is 6:11. Find the ratio of their surface areas.

Answers

Answer:

The ratio of surface areas is 36:121.

Step-by-step explanation:

We have, the ratio of the heights of two similar solids is 6:11. It is required to find the ratio of their surface areas. As the two solids are similar, it means that the ratio of surface areas of solids is directly proportional to the square of their heights such that,

$(S_1)/(S_2)=((h_1)/(h_2))^2\n\n(S_1)/(S_2)=((6)/(11))^2\n\n(S_1)/(S_2)=(36)/(121)$

So, the ratio of surface areas is 36:121.

Maria studied the traffic trends in India. She found that the number of cars on the roads increases by 10% each year. If there were 80 million cars in year 1 of her study, how many more cars were on the road in year 3 compared to year 2?

Answers

Answer: 8.8 million

Step-by-step explanation:

Given: The number of cars in year 1= 80 million

As she found that the number of cars on the roads increases by 10% each year.

Now, 10% of 80 million= $0.10*80\ million=8\ million$

Thus, the number of cars in year 2= 80 million+8 million=88 million

Now, 10% of 88 million= $0.10*88\ million=8.8\ million$

Thus, the number of cars in year 3= 88 million+8.8 million=96.8 million

Now, the difference in the cars in year 3 compared to year 2=96.8 million-88 million

Thus, the difference in the cars in year 3 compared to year 2=8.8 million

Year 2 is 88 million and in year 3 it is 96.8 million. 96.8 million-88 million it makes 8.8 million. So the answer is 8.8 million people.

10m is equal to less than or greater than 1km

Answers

1 km = 1,000 m

10m would be less than that.

Mr.Williams' class built this platform for a school event. They also built a model of the platform in which 1 foot was represented by 2 inches. What is the volume of the platform? What is the volume of the model?

Answers

For every 1ft in the original, the model used 2in

1ft:2in

There are 12inches in a foot, so we could also write the ratio as

12in:2in

12/2=6 So the model is 6X smaller than the original

The length of the original was 9ft

L=9ft

The width of the original was 4ft

W=4ft

The height of the original is 6ft

H=6ft

The volume of the original is:
V=L*W*H
V=9*6*4=216ft³

Now lets find the dimensions of the model...

If the length of the original was 9 feet we just divide that number by 6 to find the length of the model.

9/6= 1 1/3 ft

The length of the model is 1 1/3ft or 16in

If the width of the original was 4 feet we just divide that number by 6 to find the width of the model.

4/6= 2/3 ft

The width of the model is 2/3ft or 8in

If the height of the original was 6 feet we just divide that number by 6 to find the height of the model.

6/6=1ft

The height of the model is 1ft or 12 inches

The volume of the model is...

V=l*w*h=16in*8in*12in=1536in³

***Edit*** The answer is now completed

Answer:here

Step-by-step explanation:For every 1ft in the original, the model used 2in

1ft:2in

There are 12inches in a foot, so we could also write the ratio as

12in:2in

12/2=6 So the model is 6X smaller than the original

The length of the original was 9ft

L=9ft

The width of the original was 4ft

W=4ft

The height of the original is 6ft

H=6ft

The volume of the original is:

V=L*W*H

V=9*6*4=216ft³

Now lets find the dimensions of the model...

If the length of the original was 9 feet we just divide that number by 6 to find the length of the model.

9/6= 1 1/3 ft

The length of the model is 1 1/3ft or 16in

If the width of the original was 4 feet we just divide that number by 6 to find the width of the model.

4/6= 2/3 ft

The width of the model is 2/3ft or 8in

If the height of the original was 6 feet we just divide that number by 6 to find the height of the model.

6/6=1ft

The height of the model is 1ft or 12 inches

The volume of the model is...

V=l*w*h=16in*8in*12in=1536in³

Please someone can check out if my answers are correct and help me with the # 9. Thanks

Answers

looks good although 5 should be compound and 9 should be property

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