Commutaitve has to do with moving around the order
it is a+b=b+a
so x+5=5+x, therefor
9(x+5)=9(5+x)
Answer: x = 20
We know opposite angles are equivalent so we can set both of these expressions equal to each other to solve for x.
3x + 50 = 6x - 10
50 = 3x - 10 (subtract 3x from both sides)
60 = 3x (add 10 to both sides)
20 = x (divide both sides by 3)
<h3>What is the value of the expression (2/5+2/5)×3/10?</h3>
<h2>ANSWER</h2>
<h2>
![\frac{6}{25}](https://tex.z-dn.net/?f=%20%5Cfrac%7B6%7D%7B25%7D%20)
</h2>
<h3>EXPLANATION:</h3>
![( \frac{2}{5} + \frac{2}{5} ) \times \frac{3}{10}](https://tex.z-dn.net/?f=%28%20%5Cfrac%7B2%7D%7B5%7D%20%20%2B%20%20%5Cfrac%7B2%7D%7B5%7D%20%29%20%5Ctimes%20%20%5Cfrac%7B3%7D%7B10%7D%20)
![\frac{4}{5} \times \frac{3}{10}](https://tex.z-dn.net/?f=%20%5Cfrac%7B4%7D%7B5%7D%20%20%5Ctimes%20%20%5Cfrac%7B3%7D%7B10%7D%20)
![\frac{6}{25}](https://tex.z-dn.net/?f=%20%5Cfrac%7B6%7D%7B25%7D%20)
Decimal Form:
![0.24](https://tex.z-dn.net/?f=0.24)
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21 chickens and 23 goats=44
21x2=42 23x4=92
42+92 = 134 legs
x=goats y= chikens goats 4 legs chickens 2 legs
x+y=44 x=44-y
4(44-y) + 2(y) =134
176-4y +2y = 134
176-2y=134
-2y= -42
-y= -21
y=21
We know that y =-2x.
To find the value of x when y = -16, we simply plug -16 in for y in our equation.
y = -2x
-16 = -2x Divide both sides by -2, to get x all by itself
8 = x
Answer is A