Answer:
50$<x<$100
Step-by-step explanation:
more then 50$ is x>$50
les then $100 is x<$100
x> means x is bigger then...
x< means x is smaller then...
Answer:
2
Step-by-step explanation:
15+15 is 25 and for every 15 questions he gets 1 wrong so he got 2 wrong
The law of cosines can be helpful here. The largest angle (C) will be opposite the longest side (c). That law tells us ...
... c² = a² + b² -2ab·cos(C)
Then
... cos(C) = (a² +b² -c²)/(2ab)
We don't actually need the angle. We only need to know the sign of the cosine.
... cos(C) = (7² +15² -17²)/(2·7·15) = -15/210 . . . . negative sign, so C > 90°
The sail has the shape of an obtuse triangle.
_____
A triangle solver app on your calculator, phone, tablet, or computer can give you the result easily.
Answer:
y = 4x
Step-by-step explanation:
If you substitute the numbers for x and y, you'll find that y = 4x is the only equation that works.