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3 years ago

The ratio of boys to girls in the 6th grade is 2:3 . if there are 24 boys,how many girls are there ?

Mathematics

2 answers:

11Alexandr11 [23.1K]3 years ago

5 0

Answer:

Step-by-step explanation:

24/2 and then that times 3

scoundrel [369]3 years ago

5 0

Answer: 36 girls

Step-by-step explanation:

In a ratio, if possible, simplify first. Once the ratio is simplified you can multiply both numbers by the same number and the ratio will remain a ratio (which can be simplified). In this case, we can divide 24 by 2, because there are 24 boys in a ratio of 2 boys to 3 girls. The result is 12, and when we multiply 12 by 3 (the ratio for girls) we get 36. Therefore, the answer is 36 girls.

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Perform the indicated operation. <br> (-10)-(-4) <br> 6 <br> -6 <br> 14 <br> -14

34kurt

-6 you subtract and keep the sign of the greater number

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3 years ago

Suppose that x is a binomial random variable with n=5, p=. 3,and q=. 7.1. Write the binomial formula for this situation and list

Radda [10]

Answer:

$P(X = x) = C_{5,x}.(0.3)^{x}.(0.7)^{5-x}$

Possible values of x: Any from 0 to 5.

$P(X = 0) = C_{5,0}.(0.3)^{0}.(0.7)^{5-0} = 0.16807$

$P(X = 1) = C_{5,1}.(0.3)^{1}.(0.7)^{5-1} = 0.36015$

$P(X = 2) = C_{5,2}.(0.3)^{2}.(0.7)^{5-2} = 0.3087$

$P(X = 3) = C_{5,3}.(0.3)^{3}.(0.7)^{5-3} = 0.1323$

$P(X = 4) = C_{5,4}.(0.3)^{4}.(0.7)^{5-4} = 0.02835$

$P(X = 5) = C_{5,5}.(0.3)^{5}.(0.7)^{5-5} = 0.00243$

Step-by-step explanation:

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

In which $C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

And p is the probability of X happening.

In this question:

$n = 5, p = 0.3, q = 1 - p = 0.7$

$P(X = x) = C_{5,x}.(0.3)^{x}.(0.7)^{5-x}$

Possible values of x: 5 trials, so any value from 0 to 5.

For each value of x calculate p(☓ =x)

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

$P(X = 0) = C_{5,0}.(0.3)^{0}.(0.7)^{5-0} = 0.16807$

$P(X = 1) = C_{5,1}.(0.3)^{1}.(0.7)^{5-1} = 0.36015$

$P(X = 2) = C_{5,2}.(0.3)^{2}.(0.7)^{5-2} = 0.3087$

$P(X = 3) = C_{5,3}.(0.3)^{3}.(0.7)^{5-3} = 0.1323$

$P(X = 4) = C_{5,4}.(0.3)^{4}.(0.7)^{5-4} = 0.02835$

$P(X = 5) = C_{5,5}.(0.3)^{5}.(0.7)^{5-5} = 0.00243$

8 0

3 years ago

What is the common denominator of 4/12

Tema [17]

Answer:

lcm of

Step-by-step explanation:

it is 12and 2.........

5 0

2 years ago

If EG = 71, find the value of x.<br> 8x - 17<br> 5x-3

klemol [59]

Answer:

x=7

Step-by-step explanation:

8x-17+5x-3=71

13x-20=71

13x=91

x =7

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3 years ago

Iliana cubed the number of flowering plants in her garden, then added 2 vegetable plants. Let p represent the original number of

gulaghasi [49]

Total number of plants is p³ +2 ; when p = 3 the number of plants is 29 , Option D is the right answer.

<h3>What is an Equation ?</h3>

Equation is mathematical statement formed when two algebraic expressions are equated using an equal sign.

It is given that

Let p represent the original number of plants in her garden.

then total number of plants in her garden = p³ +2

the total number of plants if p = 3 is

=3³ +2

= 29

p³ +2 ; when p = 3 the number of plants is 29 , Option D is the right answer.

To know more about Equation

brainly.com/question/10413253

#SPJ1

3 0

1 year ago