3 years ago

2) Emily buys a toaster during the sale for 10% off. If Ellen pays $36, what was the original price?

Mathematics

1 answer:

Papessa [141]3 years ago

6 0

Answer: $40

Step-by-step explanation:

36÷0.9=40

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A set of headphones takes 5 minutes to charge up to 3 hours play. What is the unit rate?

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Step-by-step explanation:

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2 years ago

caleb and emily are standing 100 yards from each other. caleb looks up at a 45 degree angle to see a hot air balloon. Emily look

Sunny_sXe [5.5K]

Check the picture below.

thus then

$\bf \begin{cases}
y=100-a\\
y=a\sqrt{3}
\end{cases}\implies 100-a=a\sqrt{3}\implies 100=a+a\sqrt{3}
\\\\\\
100=a(1+\sqrt{3})\implies \boxed{\cfrac{100}{1+\sqrt{3}}=a}
\\\\\\
\textit{what is the altitude \underline{y} then?}\qquad y=100-a
\\\\\\
y=100-\cfrac{100}{1+\sqrt{3}}\implies y\approx 63.39745962156~yards$