3 years ago

SOMEONE HELP PLEASE!!! BRAINLY TO FIRST PERSON TO ANSWER CORRECTLY

Mathematics

1 answer:

Anarel [89]3 years ago

8 0

Answer:

I think the answer is $3\ in.^{3}$ <em>because the math adds up easily for this equation.</em>

#TeamTrees

<em>Hope this helps! <3</em>

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A classroom of children has 18 boys and 19 girls in which five students are chosen to do presentations. in how many ways can the

il63 [147K]

They can be chosen in 12,444 ways.

There are three different scenarios that have more boys being chosen than girls:
5 boys and 0 girls
4 boys and 1 girl
3 boys and 2 girls

We will set up combinations for all 3 of these scenarios:
$(_{18}C_5\times{_{19}C_0)+(_{18}C_4\times_{19}C_1)+(_{18}C_3\times_{19}C_2)$
$\frac{18!}{5!13!}\times \frac{19!}{0!19!}+\frac{18!}{4!14!}\times \frac{19!}{1!18!}+\frac{18!}{3!15!}\times \frac{19!}{2!17!}
\\
\\=8568+3060+816=12444$

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3 years ago

My sister needs help

melamori03 [73]

the answer to your question is the first one! it's a positive! good luck, wishing you the best on your assignment xoxo!

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3 years ago

Solve using the elimination method <br>x + 5y = 26 <br>- X+ 7y = 22

S_A_V [24]

Answer:

$x=6\\y=4$

Step-by-step explanation:

Elimination method:

$x+5y=26$

$-x+7y=22$

Add these equations to eliminate x:

$12y=48$

Then solve $12y=48$ for y:

$12y=48$

$y=48/12$

$y=4$

Write down an original equation:

$x+5y=26$

Substitute 4 for y in $x+5y=26$ :

$x+5(4)=26$

$x+20=26$

$x=26-20$

$x=6$

{ $x=6$ and $y=4$ } ⇒ $(6,4)$

<em />

<em>hope this helps...</em>

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