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emmainna [20.7K]
3 years ago
15

What is the perimeter of a regular heptagon with a side length of 9 inches?

Mathematics
1 answer:
jok3333 [9.3K]3 years ago
6 0
What kind of Question is that. That is some real math right there.
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PLS HELP ON THIS QUESTION I WILL MARK YOU AS BRAINLIEST IF YOU KNOW THE ANSWER!!
Sidana [21]

Answer:

random

Step-by-step explanation:

each has a random, equal chance of being selected

3 0
3 years ago
Read 2 more answers
HELP ITS FOR 25 POINTS, i really needa finish
SSSSS [86.1K]

Answer:

Which gas creates the longest wavelength?

→Argon gas

Which gas creates the shortest wavelength?

→ Fluorine gas

Explaination:

1.0×10^-6 > 1.0×10^-7 > 1.0×10^-10 (a^-n =1/a^n)

8 0
2 years ago
Jamal and Samuel are saving for a camping trip. Jamal starts with $18 and saves $5 each week. Samuel starts with $10 and saves $
TiliK225 [7]

Answer:

Jamal :

have = $18

need = $46-$18

= $28

saves = $5 each week

= $5 × 5 weeks

= $25 ( not enough )

Samuel :

have = $10

need = $46 - $10

= $36

saves = $7 each week

= $7 × 5 weeks

= $35 ( not enough )

thus, both boys would not have enough money to pay for the trip .

6 0
3 years ago
Two students are reading a novel. Ashley reads 10 pages per day. Carly reads 8 pages per day, but she starts
natulia [17]

Answer:

On day 20, they should both be on page 200

Step-by-step explanation:

I set the 2 equations up:

10d=8d+40 and then subtracted 8d from both sides

2d=40 and then divided both sides by 2

d=20

I then took 20 and multiplied it by 10 for Ashley (200) and then multiplied it by 8 for Carly (160) and added 40 (200)

Hope this helps!

3 0
3 years ago
Drag and drop an answer to each box to correctly complete the explanation for deriving the formula for the volume of a sphere
denis-greek [22]

The answers that would fill in the blanks are

  • 2r
  • a circle
  • an annulus
  • 1/3πr³
  • 4/3πr³
<h3>What is the Cavalier's principle?</h3>

This principle states that if two solids are of equal altitude then the sections that the planes would make would have to be parallel and also be at the same distances from their bases which are equal such that the volumes of the solids would be equal.

Now we have to fill in the blanks with the solution.

For every corresponding pair of cross sections, the area of the cross section of a sphere with radius r is equal to the area of the cross section of a cylinder with radius r and height<u> 2r</u> minus the volume of two cones, each with a radius and height of r. A cross section of the sphere is a <u>circle</u> base of cylinder, is and a cross section of the cylinder minus the cones, taken parallel to the base of cylinder, is an <u>annulus_ </u>.The volume of the cylinder with radius r and height 2r is 2πr³, and the volume of each cone with radius r and height r is 1/3πr³. So the volume of the cylinder minus the two cones is 4/3πr³. Therefore, the volume of the sphere is by Cavalieri's principle

Read more on Cavalieri's principle here

brainly.com/question/22431955

#SPJ1

5 0
1 year ago
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