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timama [110]
3 years ago
11

What is 9 + 10 = ??

Mathematics
1 answer:
Levart [38]3 years ago
7 0

Answer:

19

Step-by-step explanation:

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You choose 3 vowels out of the 7 tiles shown. How many vowels would expect to get out of 105 tiles?
malfutka [58]

Answer:

45

Step-by-step explanation:

If you treat this as a ratio, it would be 3 vowels to every 7 tiles. If one value in the ratio is multiplied by a number, the other should be multiplied by the same number. So if there are 105 tiles, the 7 in the ratio was multiplied by 15. Multiply the other value, 3, by the same number and you get 45.

5 0
3 years ago
PLEASE HELP! I WILL GIVE BRAINLIEST!<br> A<br> B<br> C<br> D<br> E
Levart [38]

Answer:

C

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Does 9,12,15 form a right triangle
wolverine [178]

Answer:

Yes.

Step-by-step explanation:

Note that  15^2 = 122^ + 9^2  ( 225 = 144 + 81 = 225).

So by the Inverse of Pythagoras Theorem  it is a right triangle.

3 0
3 years ago
How tall is the tower?
Karo-lina-s [1.5K]

Answer:

  • 93.6 ft

Step-by-step explanation:

\bf \cfrac{AB}{BC}  =  \tan(60)

  • \bf \cfrac{x}{50}  =  \sqrt{50}
  • \bf x = 50 \sqrt{3}

Length of tower:-

  • \bf x + 7
  • \bf 50 \sqrt{3}  + 7
  • \bf 93.6025
  • \bf = 93.6

Therefore, the tower is 93.6ft tall.

<u>-------------------------------------------</u>

5 0
2 years ago
On a cloudy day, Yong Sun needed to know the height of a window in a building. Yong Sun positioned a mirror on the ground betwee
const2013 [10]
Its a ratio problem

height/34.15 = 1.89/.2288
4 0
4 years ago
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