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SOVA2 [1]
3 years ago
10

A club has 20 members, 12 boys and 8 girls. The club needs to select a president, vice-president and secretary. They decide to s

elect randomly. What is the probability that: a) The officers are all female? b) The officers are all male? c) At least one member from each gender is an officer?
Mathematics
1 answer:
sergejj [24]3 years ago
6 0

Answer:

a)2/5

b)3/5

C) 1

Step-by-step explanation:

a-8/20=2/5

b-12/20-3/5

c-12+8=20/20=1

i am not that sure about c

hope this help

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1. Solve. 3(h – 4) = –1/2(24 – 6h)<br><br> 2. Solve for x. ax + bx = –c
Naddik [55]
ANSWER TO QUESTION 1

3(h-4) = - \frac{1}{2} (24 - 6h)

We multiply through by the Least Common Multiple which is 2.

2 \times 3(h-4) = - 2 \times \frac{1}{2} (24 - 6h)

6(h - 4) = - 1(24 - 6h)

We expand brackets to obtain,

6h - 24 = - 24 + 6h

Grouping like terms, have

6h - 6h = - 24 + 24

\Rightarrow 0 = 0

Whenever you solve an equation and you get the above result, you don't have to get confuse.

It simply means the question does not have a UNIQUE solution.

That any real number will number will satisfy the above equation.

Hence,

h \in R




ANSWER TO QUESTION 2

ax + bx = - c

We factor x to obtain;

x(a + b) = - c

We divide both sides by (a+b)

x = - \frac{ c}{a + b}
3 0
3 years ago
Each of the 15,000 New England minutemen who occupied the hills in Boston was supplied with only 36 cartridges. If all 15,000 fi
aev [14]
Well, 1/4 of 36 is 9, so 15000*9= 13500 cartridges in all
5 0
3 years ago
Find the value of x<br>-3=16-x​
Oxana [17]

Answer:

Step-by-step explanation:I don't say you have to mark my ans as brainliest but if you think it has really helped you plz don't forget to thank me...

6 0
4 years ago
Alexa has some dimes and some quarters. She has a minimum of 28 coins worth a maximum of $5.05 combined. If Alexa has 17 quarter
vazorg [7]

Answer:

if she has 17 quarters, the money of it would be $4.25.

$5.05 - 4.25$ = $0.80

=> 8 dimes

=> she have 17 quarters and 8 dimes

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
The results of a recent survey of 1500
ddd [48]

Answer:

A) <u>7 : 13</u> is the ratio .

B) <u>69.65 million </u>approve of George W. Bush.

Step-by-step explanation:

Given:

The results of a recent survey of 1500  American adults show that 525 approve of the   job that President George W. Bush is doing  and 975 do not approve.

Now, to find the ratio of the people approve to those that do not. And number of people approve of George W, if there are 199 million adults in the United States.

<h2>A)</h2>

People approve of the job = 525.

People do not approve of the job = 975.

So, the ratio of that approve to those that do not:

525:975

=\frac{525}{975}

<em>On simplifying it:</em>

=\frac{7}{13}

=7:13.

Thus, the ratio is 7 : 13.

<h2>B)</h2>

If the adults in the United States is 199 million.

Let the people approve be x.

According to survey 525 out of 1500 approve of the job.

So, 525 is equivalent to 1500.

Thus, x is equivalent to 199,000,000. (1 million = 1,000,000.)

Now, to solve by using cross multiplication method:

\frac{525}{1500} =\frac{x}{199,000,000}

<em>By cross multiplying we get:</em>

<em />104,475,000,000=1500x<em />

<em>Dividing both sides by 1500 we get:</em>

69,650,000=x\\\\x=69,650,000.

Thus, number of people approve are 69.65 million.

Therefore, 69.65 million approve of George W. Bush.

8 0
3 years ago
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