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alex41 [277]
3 years ago
13

If there are 3 classrooms that each have 25 desks and there are a total of 87 students, how many more desks need to be added to

a 4th classroom, that was originally empty, so that each of the students has a desk to sit in?
Mathematics
2 answers:
Oxana [17]3 years ago
7 0

Answer:

12

Step-by-step explanation:

oksano4ka [1.4K]3 years ago
3 0
12 more seats/desk is how many more

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50 Points:
Bond [772]

The answer to this would be C because you can multiply everything by 3 and still have a consistent-dependent system.

6 0
3 years ago
Why is it not possible to form a right triangle with the lengths 2, 4, and 7? *
puteri [66]

Answer:

No. The sum of 2 and 4 is less than 7.

Step-by-step explanation:

So, first, to create a triangle, the sum of two smallest sides have to be greater than the longest side, which is 2+4 = 6, and 6 is smaller than 7.

So, no, 2, 4, and 7 cannot create a triangle, to be exact a right triangle.

Hope this helps!!

8 0
3 years ago
Read 2 more answers
1. The people of Whoville were shopping like crazy to get their lists completed! one customer bought a wreath for $12 and seven
OlgaM077 [116]
1 = 6
5=8
6=75%?
7=21?
8=21
9=400
10=100
11=40

These are all the one I got the ones with ? At the end I’m not sure about
4 0
3 years ago
Patrycja goes shopping in a supermarket.
inysia [295]

Answer:£0.37

Step-by-step explanation:

£4.44/12=£0.37

3 0
2 years ago
R leaks out of a barrel so that the rate of change in the water level is proportional to the square root of the depth of the wat
Irina-Kira [14]
Let y(t) represent the level of water in inches at time t in hours. Then we are given ...
  y'(t) = k√(y(t)) . . . . for some proportionality constant k
  y(0) = 30
  y(1) = 29

We observe that a function of the form
  y(t) = a(t - b)²
will have a derivative that is proportional to y:
  y'(t) = 2a(t -b)

We can find the constants "a" and "b" from the given boundary conditions.
At t=0
  30 = a(0 -b)²
  a = 30/b²
At t=1
  29 = a(1 - b)² . . . . . . . . . substitute for t
  29 = 30(1 - b)²/b² . . . . . substitute for a
  29/30 = (1/b -1)² . . . . . . divide by 30
  1 -√(29/30) = 1/b . . . . . . square root, then add 1 (positive root yields extraneous solution)
  b = 30 +√870 . . . . . . . . simplify

The value of b is the time it takes for the height of water in the tank to become 0. It is 30+√870 hours ≈ 59 hours 29 minutes 45 seconds
5 0
3 years ago
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