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Ahat [919]
3 years ago
9

Heyy! i’ll give brainliest please help

Mathematics
1 answer:
ki77a [65]3 years ago
6 0

October

Step-by-step explanation:

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RSM wants to send four of its 18 Math Challenge teachers to a conference. How many combinations of four teachers include exactly
tatiyna

Answer:

1120 combinations of four teachers include exactly one of either Mrs. Vera or Mr. Jan.

Step-by-step explanation:

The order in which the teachers are chosen is not important, which means that the combinations formula is used to solve this question.

Combinations formula:

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)!}

In this question:

1 from a set of 2(Either Mrs. Vera or Mr. Jan).

3 from a set of 18 - 2 = 16. So

C_{2,1}C_{16,3} = \frac{2!}{1!1!} \times \frac{16!}{3!13!} = 1120

1120 combinations of four teachers include exactly one of either Mrs. Vera or Mr. Jan.

4 0
3 years ago
1/4+x=5 1/8<br> What is x?<br> Please, Please, Please, Please help me!<br> Will mark Brainliest!
miv72 [106K]

Answer:

4 7/8

Step-by-step explanation:

First we need to gte the denominators the same!

So we multiply the 1/4 by 2

1/4 x 2 = 2/8

Now we subtract the 2/8 from 5 1/8 to get our answer :)

5 1/8 - 2/8 = 4 7/8

Your final answer will be 4 7/8 :)

Have a great day!

Please rate and mark brainliest!

3 0
2 years ago
What is the answer to 3x + 2 = 4x
Sedbober [7]
X=2
because if you subtract 3x on both sides you end up with x=2 <span />
5 0
3 years ago
Which represents the empirical formula for A3B9?<br> AB3<br> AB2<br> A3B9<br> A9B27
DaniilM [7]

Answer:

AB_{3}

Step-by-step explanation:

Given : A_{3}B_{9}

To Find : Which represents the empirical formula forA_{3}B_{9}?

Solution:

Definition of Empirical Formula - A formula that gives the simplest whole-number ratio of atoms in a compound.

A_{3}B_{9}

To reduce it in simplest form

Divide the subscript numbers by 3

So, the resultant : AB_{3}

Thus the empirical formula for A_{3}B_{9} :

AB_{3}


5 0
3 years ago
Read 2 more answers
seventy-two students sit on benches in one section of the football stadium. Each bench holds 6 students. Write a number sentence
WARRIOR [948]
There was 12 benches because if you divided 72 by 6 you would get 12 if someone else answers please give brainliest
6 0
3 years ago
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