<span>We can quickly calculate a ten percent tip by moving the decimal place one to the left. So a 10% tip on $85.00 would be $8.50. We can then take half of that tip to calculate the remaining 5%. $8.50 / 2 = $4.25. The sum of these two results is equal to a 15% tip. $8.50 + $4.25 = $12.75. The correct answer is D.</span>

5 0

3 years ago

The school playground is the shape below. How many square

nadya68 [22]

Answer:

D) 22 m2

Step-by-step explanation:

First multiply 5 times 2=10. Then do 9-5=4 and 4-2=2. Next is 2 times 4=8. Next is 2 times 4=8. Then 8 divided by 2=4 because its a triangle. Lastly 10+8+4=22 which is D!! Hope this helped.

5 0

4 years ago

Find the quotient of the complex numbers. Leave answer in polar form.

Goryan [66]

$\bf \qquad \textit{division of two complex numbers}
\\\\
\cfrac{r_1[cos(\alpha)+isin(\alpha)]}{r_2[cos(\beta)+isin(\beta)]}\implies
 \cfrac{r_1}{r_2}[cos(\alpha - \beta)+isin(\alpha - \beta)]\\\\
-------------------------------$

$\bf \cfrac{z1}{z2}\implies \cfrac{\frac{1}{8}\left[cos\left(\frac{2\pi }{3} \right)+i~sin\left(\frac{2\pi }{3} \right) \right]}
{\frac{1}{3}\left[cos\left(\frac{\pi }{4} \right)+i~sin\left(\frac{\pi }{4} \right) \right]}
\\\\\\
\cfrac{\quad \frac{1}{8}\quad }{\frac{1}{3}}\left[cos\left(\frac{2\pi }{3}-\frac{\pi }{4} \right)+i~sin\left(\frac{2\pi }{3}-\frac{\pi }{4} \right) \right]
\\\\\\
\cfrac{3}{8}\left[cos\left(\frac{5\pi }{12} \right)+i~sin\left(\frac{5\pi }{12} \right) \right]$

4 0

3 years ago

Can someone helping me?

solong [7]

Answer:

Step-by-step explanation:

Graph in desmos by making a table then you're able to count more clearly

7 0

3 years ago

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