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nika2105 [10]
3 years ago
10

In a room there are a mixture of people and dogs. there are 72 heads, and 200 legs. how many dogs are in the room?

Mathematics
1 answer:
IRINA_888 [86]3 years ago
6 0
There are a total of 9 dogs
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Please give a full explanation and I will give you brainlest
andrew-mc [135]

Answer:

w = 33

Step-by-step explanation:

w ÷ 3.3 = 10

multiply both sides by 3.3:

w ÷ 3.3 x 3.3 = 10 x 3.3

⇒ w = 33

6 0
2 years ago
Find two natural numbers that are multiples of both 12 and 15​
Diano4ka-milaya [45]

Answer:

60 and 120

Step-by-step explanation:

The LCM of 12 and 15 is 60

The smallest natural number that would be a multiple of 12 and 15 would be 60.

To find the second number, all you do is multiply 60 by 2 and you get 120.

(60 * 2 = 120)

8 0
2 years ago
Read 2 more answers
Which of the following sets of lengths can Sean use to make a right triangle?
love history [14]

If we know your Pythagorean Triples we can immediately recognize that the last choice is a right triangle:

8² + 15² = 17²

If you don't know your Pythagorean Triples, it's worth learning the first few off the list because teachers use them in problems all the time.  But for now let's just exhaustively check the Pythagorean Theorem for each triangle.  We don't have to multiply everything out; we can analyze the common factors.  If two have a common factor that the third one doesn't have, there's no way for the Pythagorean Theorem to add up.

Clearly 5²+15² is a multiple of 5 but 18² isn't so that one isn't a right triangle.

6²+12² is a multiple of 6, 16² isn't a multiple of 6, not an RT.

15²-5² is a multiple of 5, 13² isn't, no joy.

8²+15² = 64 + 225 = 289 = 17² -- that's a real right triangle, a valid Pythagorean Triple.

5 0
3 years ago
2. The number of students in a classroom is 6 more than 4 times the number of teachers. There are 15 teachers. How many students
Alexus [3.1K]
The number of students in a classroom is 66
8 0
2 years ago
1.) Max is driving 42 miles per hour. A dog dog runs into the street and max reacts in about three quarters of a second. What is
Nostrana [21]

Answer: 14.07\ m

Step-by-step explanation:

Given

Max is driving at a speed of 42\ mph

It took him three-quarters of a second i.e. 0.75\ s

Speed in meter per second is 18.77\ m/s

Distance is given by

d=v\times t

Reaction distance is

d=18.77\times 0.75=14.07\ m

5 0
3 years ago
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