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wlad13 [49]
3 years ago
8

Please anwser im having the hardest time on this picture

Mathematics
2 answers:
Vesnalui [34]3 years ago
4 0
42+85+69=196
196/7=28
Free_Kalibri [48]3 years ago
3 0
What you do first is add the books 42 + 85 + 69 which equals 196. Then divide 196 by 7 and you get 28 :)
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Which number produces an rational number when multiplied by 1/5
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Any rational number will satisfy the situation.
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3 years ago
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john's first 3 tests scores in chemistry were 70, 75, 91. what was his median score? a. 72.5 b. 91 c. 75 d. 10
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C. 75. The median is the middle number in the sequence
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3 years ago
Find the percent change from the first value to the second.<br><br> 50; 39
sertanlavr [38]

Answer:

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Step-by-step explanation:

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Hope this helps :)

7 0
2 years ago
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olga nikolaevna [1]

\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)] \\\\[-0.35em] \rule{34em}{0.25pt}

\bf \begin{cases} z1=9[cos(225^o)+i~sin(225^o)]\\\\ z2=3[cos(45^o)+i~sin(45^o)] \end{cases}\implies \cfrac{z1}{z2}\implies \cfrac{9[cos(225^o)+i~sin(225^o)]}{3[cos(45^o)+i~sin(45^o)]} \\\\\\ \cfrac{9}{3}[cos(225^o-45^o)+isin(225^o-45^o)]\implies 3[cos(180^o)+i~sin(180^o)] \\\\\\ 3[(-1)+i~(0)]\implies -3+0i

8 0
3 years ago
Read 2 more answers
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Ok so ratios
john casts a shadow of 180 when he is 180
therefor shadowheight=realheight
320shadowheight=realheight


realheight=320centimeters
7 0
3 years ago
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