X-y=2 (*-2) --> -2x+2y=-4
2x+3y=14
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2x+3y=14
-2x+2y=-4
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5y=10
y=2
Answer:
180 start line
Step-by-step explanation:
53+x+43=180
96+×=180
×=84
Answer:
m=3/5
Step-by-step explanation:
Since we want the unit speed (kilometers per hour, or 1 hour), we want to find the rate of kilometers to hours. We have 19.2 kilometers, and 3 hours, but we want to get to 1 hour. To get that, we can simply make it a fraction (“per” is a key word for a fraction) to get 19.2 km/3 hours. Dividing both the numerator and denominator by 3 to get 1 hour (this works due to that since we’re dividing both by 3, we’re essentially multiplying by 1, and we can multiply by 1 using identity properties. To elaborate, if we have (x/y)/(a/y), with y being the same number, we can make it into a multiplication problem by switching the numerator and denominator of the bottom function to get (x/y)*(y/a)=x/y), we get 19.2/3=6.4 and 3/3=1. Therefore, as we have 6.4 kilometers/1 hour, Latoya’s speed is 6.4 kilometers per hour.
Feel free to ask further questions!
2(2x-6)=28
4x-12=28
4x=28-12
4x=16
4x÷4=16÷4
X=4
You must divide both 4x and 16 by 4 because you're trying to isolate X and find what X is. I hope I helped.
