Answer: x+3y−9
Step-by-step explanation:
Simplify the expression.
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1. You con solve the quadratic equation x^2+20x+100=50<span> by following the proccedure below:
2. Pass the number 50 from the right member to the left member. Then you obtain:
x^2+20x+100-50=0
</span><span> x^2+20x+50=0
</span><span>
3. Then, you must apply the quadratic equation, which is:
x=(-b±√(b^2-4ac))/2a
</span><span>x^2+20x+50=0
</span><span>
a=1
b=20
c=50
4. Therefore, when you simplify, the result is:
-10</span><span>±5</span>√2 (It is the last option).<span>
</span>
It would be 70% of 400
490(.7) = 280
Hope you get this right I just need to answer this so I can ask a question
If that is all the question is asking, simply solve the problem.
Divide 8 cars by 4 hours, giving you 2 cars every hour.
