3 years ago

2x -4 = x+8 3x - 6 = x

Mathematics

2 answers:

katovenus [111]3 years ago

5 0

X12 hope it helps you with your math

OverLord2011 [107]3 years ago

4 0

Answer:

x=12

Step-by-step explanation:

2x-4=x+8

2x-x=4+8

1x=12

12/1=12

12=x

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Ariel wants to choose 5 players for her basketball team. There are 7 players to choose from. How many different teams can aerial

Natali [406]

The <u>correct answer</u> is:

A) 21

Explanation:

This is a combination of 7 objects taken 5 at a time:

$_nC_r=\frac{n!}{r!(n-r)!}$

In our case, n = 7 and r = 5:

$_7C_5=\frac{7!}{5!(7-5)!}=\frac{7!}{5!2!}
\\
\\=\frac{7\times 6\times 5\times 4\times 3\times 2\times 1}{5\times 4\times 3\times 2\times 1\times 2\times 1}
\\
\\=\frac{5040}{240} = 21$

3 0

4 years ago

Plz help in a rush!!!!!!!!!!

Bogdan [553]

Your answer is 4.7

Using the Pythagorean Theorem, you can find the length of the missing side:

$a^{2}+b^{2}=c^{2}\\(3)^{2}+b^{2}=(5.6)^{2}\\9+b^{2}=31.36\\b^{2}=22.36\\b=\pm \sqrt{22.36}$
Length cannot be negative, so your answer is:
$b=\sqrt{22.36}=4.728636...\\\\b=4.7$