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Kryger [21]
3 years ago
5

In a nursery class of 18 pupils, the average is

Mathematics
2 answers:
melamori03 [73]3 years ago
8 0

Answer:

The sum of the age of pupils is 81

Step-by-step explanation:

Let sum of age of 18pupils = x

Average ages = 4.5

Average = total/no. of pupil

4.5 = x/18

x = 81

dimaraw [331]3 years ago
6 0

Answer:

The sum of the age of pupils is 81

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Pls help in a middle of an exam
KIM [24]

Answer:

\frac{2x^2+4x-9}{(2x-3)(2x+3)(x-1)}

Step-by-step explanation:

\frac{2x}{4x^2-9} + \frac{3}{2x^2+x-3} can be simplified to:
\frac{2x}{(2x-3)(2x+3)}+\frac{3}{(2x+3)(x-1)}

Make them have common denominators so:
\frac{(2x)(x-1) +3(2x-3)}{(2x-3)(2x+3)(x-1)}

Simplify:
\frac{2x^2-2x+6x-9}{(2x-3)(2x+3)(x-1)} = \frac{2x^2+4x-9}{(2x-3)(2x+3)(x-1)}

I don't think you can simplify that fraction further so that's the answer.

3 0
2 years ago
How many cylindrical can of bottles 12 cm high and with 6 cm diameter could be filled from a tank containing 125 liters of deter
Orlov [11]

Answer:

368 cans.

Step-by-step explanation:

Volume of 1 can = π r^2 h.

Here h (height) = 12 and r (radius) = 1/2 * 6 = 3 cm.

So V =  π * 3^2 * 12

= 108π cm^3.

The tank hold 125 liters

=  125,000 cm^3, so:

Number of cans that could be filled = 125000/ 108 π

= 368.4.

4 0
3 years ago
Read 2 more answers
Line<br> A.<br> C.<br> D.<br> B.<br> Defined<br> Postulates<br> Theorems<br> Undefined<br> Terms
oksian1 [2.3K]

Answer: Undefined

Step-by-step explanation:

In geometry there are three  undefined terms that we use to define other terms:

  • Point → In geometry a point has a location but no dimension.
  • Plane →  A plane extends is a 2-dimensional surface that extends infinitely on both sides.
  • Line → A line is a one-dimensional undefined figure that extends infinitely in both the directions. It has length but has no width.

Hence, the correct option is "Undefined".

8 0
3 years ago
6 times 9+6+9 =? <br>Pls help
Nata [24]

144

If you add 9+6+9 is will give you 24 than you would times that by 6. So 9+6+9= 24 next 24×6=144.

6 0
3 years ago
Read 2 more answers
What percent of shrink is caused by employees
Alika [10]

Answer:In 2017, the NRSS reported that external theft or customer shoplifting were responsible for 37.5% of retail shrinkage. And 33.2% of retail shrinkage was caused by employee or internal theft.

Step-by-step explanation:

3 0
2 years ago
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