MATHEMATICS MIDDLE SCHOOL

the perimeter of the rectangle is 86 inches. if the length is 3 inches longer that the width, find the width of a rectangle.

Answers

Answer 1
Answer:

Answer:

Width = 20 inches

Step-by-step explanation:

Perimeter = 86 inches

Width = W

Length = 3 + W

Use the formula 2L + 2W = P to solve

Substitute new value for length (3 + w) into the formula

2(3 + W) + 2W = P

Change perimeter into the equation to 86 inches (Given)

2(3 + W) + 2W = 86

Multiply

6 + 2W + 2W = 86

Add the W's

6 + 4W = 86

Subtract 6 from both sides of the equation

4W = 80

Divide both sides of the equation by 4

W = 20 inches

Hope this helps :)
Answer 2
Answer: The length is 23in and the width is 20 inches

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At the local aquarium there are 10 dolphins 8 penguins and 4 whales what is the ratio of penguins to whales

Answers

A ratio compares two quantities.

penguins = 8
whales = 4

8:4 , now simplify

8/4 = 2
4/4 = 1

2:1 is the ratio.

Final answer: 2:1
A ratio compares 2 or more quantities. But when working with ratios you have to be VERY careful. What ever says to come in the ratio 1st it HAS to come first, cause if you change the order it will mess the ratio up. A ratio can be written in 3 ways:- 

a to b
a:b
(a)/(b)

Now lets look at the information we have:-

10 - dolphins
8 - penguins
4 - whales  

Now we need to find the ratio of penguins to whales. So it would look like this:-

penguins: whales
penguins to whales
(penguins )/(whales)
 
Penguins:- 8
Whales:- 4 

So, the ratio of penguins to whales would look like:- 

8 to 4
8:4
(8)/(4)

Now we will simply (8)/(4)

8 ÷ 4 = 2
4 ÷ 4 = 1 

So, our new simplified ratio would be:-  2 to 1. 2:1. (2)/(1).

Hope I helped ya!! 

A cell doubles every 15 minutes. If there is 1 cell at noon, how many cells will there be at 3 p.m.? Show work.

Answers

12:15 - 1+1 = 2
12:30 - 2 + 2 = 4
12:45 - 4 + 4 = 8
1 - 8 +8 = 16
1:15.......
.......
3 - 4096
okay so there is 1 cell and it starts doubling at 12:00 every 15 minutes that is 4 times every hour and there is three hours so 4 x 3 = 12 so it doubles 12 times then 12 x 2 = 24 so at 3pm that cell would have multiplied it self into 24 other cells 

Is line L parallel to line M? Explain.Yes, alternate interior angles are congruent.
No; alternate interior angles are not congruent.
No; corresponding angles are not congruent.
Yes; corresponding angles are congruent.
Attachment

Answers

Where Is The Picture ?

Distributive property

Answers

1/4‌(3n+‌3/2‌)=(‌1/4‌)(3n+‌3/2‌)=(‌1/4‌)(3n)+(‌1/4‌)(‌3/2‌)=‌3/4‌n+‌3/8
The distributive property is one of the most frequently used properties in math. In general, this term refers to the distributive property of multiplication which states that the. Definition: The distributive property lets you multiply a sum by multiplying each addend separately and then add the products.

Is 66 yd larger than 180 ft? Why or why not?

Answers

66 yards is greater, because in the metric system 1 yard= 3 feet. 66 yards is equal to 198 feet. Therefore, making 66 feet greater than 180 feet.
Greater because if 1 yard equals 3 feet then 66 feet equals 198 feet and 198>180

on June 1, 2013, the number of hours of daylight in Anchorage, Alaska was 18 1/4 hours. what was the number of hours without daylight?

Answers

ok if there is 24 hours in a day just do this 

24-18 1/4=5.87

so there were 5 3/4 of day like that was not there!
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