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3 years ago

7

The cost of 18 notebooks at store j is $22.50. The notebooks at store j are all same price. The cost of notebooks at store k is

shown on the graph below

2 answers:

anzhelika [568]3 years ago

8 0

Answer:

Where is the graph?

Step-by-step explanation:

Katyanochek1 [597]3 years ago

4 0

The answer: $1.25

22.50/18= 1.25

1.25 for each

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$\bf cot(u)=4\qquad \pi \ \textless \ u\ \textless \ \frac{3\pi }{2}\implies cot=\cfrac{-4}{-1}\cfrac{\leftarrow adjacent}{\leftarrow opposite}
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$\bf sin\left( \frac{u}{2} \right)=\pm\sqrt{\cfrac{1+\frac{4\sqrt{17}}{17}}{2}}\implies \pm\sqrt{\cfrac{\frac{17+4\sqrt{17}}{17}}{2}}\implies \boxed{\pm\sqrt{\cfrac{17+4\sqrt{17}}{34}}}
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