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Lubov Fominskaja [6]
3 years ago
7

Please help!!

Mathematics
1 answer:
Pani-rosa [81]3 years ago
3 0

Answer:

the answer is B, x=7

Step-by-step explanation:

heron's area formula:

s = \frac{a + b + c}{2}

area =  \sqrt{s(s - a)(s - b)(s - c)}

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We form a committee of 8 people, to be chosen from 15 women and 12 men. (a) How many possible committee can be formed
eimsori [14]

Using the combination formula, it is found that 2,220,075 committees can be formed.

The order in which the people are chosen is not important, hence, the <em>combination formula</em> is used to solve this question.

<h3>Combination formula: </h3>

C_{n,x} is the number of different combinations of x objects from a set of n elements, given by:

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

In this problem, 8 people are chosen from a set of 12 + 15 = 27, hence:

C_{27,8} = \frac{27!}{8!19!} = 2220075

2,220,075 committees can be formed.

To learn more about the combination formula, you can take a look at brainly.com/question/25821700

3 0
2 years ago
If there are 360 grams of radioactive material with a half-life of 8 hours, how much of the radioactive material will be left af
lyudmila [28]

Answer:

There will be 22.5 grams left after 32 hours.

Step-by-step explanation:

A half-life is how long it takes for half of the amount to go away. In this case, we see that we have two half-life periods worth, which you can determine by dividing the total time by the half-life time.

32hrs/8hrs = 4 half lives.

Now we can raise 1/2 to the power of how many half lives we have (2). Then we multiply that by the amount in the sample.

(1/2)^4 * 360

1/16 * 360

22.5 grams

And this is an exponential function.

4 0
3 years ago
Read 2 more answers
HELP PLEASE THANKS (;
Zielflug [23.3K]
You have 2 equations that are both equal to y. If they are both equal to y, then by the transitive property of equality, they are equal to each other (if a = b, and b = c, then a = c).
5x - 17 = x + 3 and
4x = 20 and x = 5. Now sub in that x value of 5 to solve for y:
y = 5 + 3 and y = 8. So the ordered pair is (5, 8)
5 0
3 years ago
Plz help don’t understand this question and I got it wrong an i have to redo it
Paladinen [302]

Answer:

its B

Step-by-step explanation:

7 0
3 years ago
Which is a correct name for the angle shownv?
nirvana33 [79]
Angle CBA is the right name because it's in between C and A
3 0
3 years ago
Read 2 more answers
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