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Delvig [45]
2 years ago
9

I need help in middle school work !

Mathematics
2 answers:
Ksju [112]2 years ago
4 0
What’s your work ...
denpristay [2]2 years ago
3 0

Answer:

message me ill anwser them

Step-by-step explanation:

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Find the apothem and area of a square with a radius of 9.
Nonamiya [84]

Answer:

I think the answer is 18 square or 324.

Step-by-step explanation:

6 0
2 years ago
Eva collected 2,090 coins. Elijah collected 1,910 coins. They divided all their coins into 8 equal stacks. How many coins are in
Oxana [17]

Answer:

500 coins. 2,090 + 1,910 = 4,000. 4,000/8 = 500. hope this helps

Step-by-step explanation:

- Zombie

7 0
2 years ago
There are 5280 feet in a mile. What fraction is represented by 240 feet?
Sauron [17]

The fraction would be the portion over the total:

240 / 5280

Divide both top and bottom by 240 and the fraction simplifies to 1/22

The answer is 1/22

7 0
3 years ago
The volume of a hemisphere is 144 pi. Find the radius and total surface area.
sineoko [7]
Formula of the Volume of a hemisphere:
V = \frac{2}{3}\pir³
144\pi = \frac{2}{3}\pir³
Multiply by 3 to cancel fraction in the right side
144\pi × 3 = 2\pi r³
432 \pi = 2\pir³
Divide by 2\pi on either sides to isolate r³
\frac{432 \pi }{2 \pi } = \frac{2 \pi }{2 \pi }r³
2\pi and 2 \pi cancel out
216 = r³
Take cube root to find the radius
\sqrt[3]{216} = \sqrt[3]{r^3}
6 = r
Radius is 6 units

The formula of the surface area of a hemisphere is:
S.A = 2\pir² + \pir²
       = 2\pi(6)² + \pi(6)²
       =2\pi × 36 + 36\pi
       = 72\pi + 36\pi
       = 108\pi units²  (in terms of \pi)
       ≈ 339.12 units²

Surface area = 108\pi units
8 0
3 years ago
Now heres the tricky part​
loris [4]

13. Answer: n ≥ 108

<u>Step-by-step explanation:</u>

18 ≤ n ÷ 6

<u>×6 </u>  <u>    ×6 </u>

108 ≤ n       →   n ≥ 108

Note: The line under the inequality symbol represents a closed dot

Graph: 108 ·---------------→

************************************************************************************

14. Answer: x > -4

<u>Step-by-step explanation:</u>

 -3x <  12

<u>÷(-3) </u>  <u>÷(-3) </u>

    x > -4      <em>Flip the inequality sign when × or ÷ by a negative </em>

Note: No line under the inequality symbol represents an open dot

Graph: -4 o-----------→

4 0
2 years ago
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