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Viktor [21]
3 years ago
13

A found raising meeting raised sh 8100 for buying desk for three schools, A,B and C, the money was shared to the schools in the

ratio 3:2:4 respectively A, what fraction did each get?? B, how much money did each get?
Mathematics
1 answer:
Gelneren [198K]3 years ago
8 0

Answer:

  • A: 1/3, 2700
  • B: 2/9, 1800
  • C: 4/9, 3600

Step-by-step explanation:

The total number of ratio units is 3+2+4 = 9, so the fractions each school got were ...

  A : B : C = 3/9 : 2/9 : 4/9

These fractions multiply the total amount raised:

  A got 1/3 = 2700, B got 2/9 = 1800, C got 4/9 = 3600

You might be interested in
A veterinary researcher takes a random sample of 60 horses presenting with colic. The average age of the random sample of horses
Licemer1 [7]

Answer:

Probability that a sample mean is 12 or larger for a sample from the horse population is 0.0262.

Step-by-step explanation:

We are given that a veterinary researcher takes a random sample of 60 horses presenting with colic. The average age of the random sample of horses with colic is 12 years. The average age of all horses seen at the veterinary clinic was determined to be 10 years. The researcher also determined that the standard deviation of all horses coming to the veterinary clinic is 8 years.

So, firstly according to Central limit theorem the z score probability distribution for sample means is given by;

                    Z = \frac{\bar X-\mu}{\frac{\sigma}{\sqrt{n} } } ~ N(0,1)

where, \bar X = average age of the random sample of horses with colic = 12 yrs

            \mu = average age of all horses seen at the veterinary clinic = 10 yrs

   \sigma = standard deviation of all horses coming to the veterinary clinic = 8 yrs

         n = sample of horses = 60

So, probability that a sample mean is 12 or larger for a sample from the horse population is given by = P(\bar X \geq 12)

   P(\bar X \geq 12) = P( \frac{\bar X-\mu}{\frac{\sigma}{\sqrt{n} } } \geq \frac{12-10}{\frac{8}{\sqrt{60} } } ) = P(Z \geq 1.94) = 1 - P(Z < 1.94)

                                                 = 1 - 0.97381 = 0.0262

Therefore, probability that a sample mean is 12 or larger for a sample from the horse population is 0.0262.

4 0
3 years ago
HELP YOU WILL GET BRAINLIEST
dezoksy [38]

Answer:

60π

Step-by-step explanation:

2π(3 × 7 ) + 2π (3)^2

Distribute: 2x3x7 and 2x3^2

42π + 18π

That gives 60π.

7 0
3 years ago
What is an equation for the scenario the entrance fee to an amusement park is $9 plus $1.50 for each ride
MAVERICK [17]
E+r=
(e=9)
r=1.50)
or 9+1.50=
I think
3 0
3 years ago
Can you write all of those in Fractions Decimals and Percentages .
Misha Larkins [42]

Answer:

a) decimal 7.222

fraction: 65/9

percentage: 722.22

b) Fraction: 37/5

decimal: 7.4

Percentage: 740

Step-by-step explanation:

6 0
2 years ago
IF AM = 10, then TC =?
Artyom0805 [142]
Hey there,

AM= 10

180 - 10 = 170.

TC equals 170.

Hope this helps.
~Jurgen
3 0
3 years ago
Read 2 more answers
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