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julsineya [31]
3 years ago
9

Please help me with this question

Mathematics
2 answers:
Ksju [112]3 years ago
7 0
The last one is 4/9.
Lerok [7]3 years ago
3 0

Answer:

1. 3 x 2 = 6 / 4 x 3 = 12 = 6/12 [simplify] = 1/2 thats the first answer, just do how i did it to get the others, its pretty simple

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the distance around a meteor crater is 9687 feet find the diameter of the crater use 22/7 for pi round to the nearest tenth
WARRIOR [948]
Assuming that the meteor crater forms a hemisphere, the formula for the surface area of the crater would be 2(pi)(radius^2). Set the crater equal to the formula for a hemisphere and substitute pi for 22/7 and you’d get 9687 = 2(22/7)(radius^2). Do some quick magic on the calculator to simplify and you end up with about 60,889.71 = radius^2. Take the square root from both sides and you get 246.8 when rounded. That should be the length of the radius, and so to find the diameter, just multiply that by 2 to get 493.5. Now I don’t really know what shape you mean by meteor crater, so we’re just assuming here that you mean half of a sphere, or a hemisphere. Don’t know if this is what you’re looking for, so good luck.
8 0
4 years ago
Can you help me with this problem
alex41 [277]

I think its 8 because 64 divided by 8 is 8.


3 0
4 years ago
Riley is currently 4 times as old as her brother. If Riley was 11 years old 5 years ago, how old is Riley's brother now?
Sonbull [250]
Riley's age = r
Riley's brother's age = r/4

If Riley was 11 five years ago, Riley is currently 11 + 5 years old, or 16 years old.

Now we just need to use r/4 to find Riley's brother's age:

16 /4 = 4

Riley's brother is 4 years old.

Hope this helps!
5 0
4 years ago
Han's house is 450 meters from school. Lin’s house is 135 meters closer to school. How far is Lin’s house from school?
Marina86 [1]

Solution:

<u>Note that:</u>

  • Han's house = 450 m from school
  • Lin's house = (450 - 135) from school

<u>Looking at the options, we can tell that the letter "z" represents Lin. </u>

  • => z = (450 - 135)
  • => z = 450 - 135

This option matches with Option D.

Option D is correct.

6 0
3 years ago
What are the factors of 42
Kaylis [27]
42|2 \\ 21|3 \\ 7 \ |7 \\ 1 \\ \\ \\ \boxed{42=2*3*7}
7 0
3 years ago
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