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coldgirl [10]
3 years ago
6

Multiply (2 − 7i)(9 + 5i). A) 53-53i B) -17-53i C) 18-35i^2 D) 18-53i-36i^2

Mathematics
1 answer:
kenny6666 [7]3 years ago
3 0
(2-7i) (9+5i)

18+10i-63i-35i^2

i^2= -1 so -35*-1= 35

35+18= 53

-63i+10i= -53I

answer is 53-53i
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On a class trip to the museum,5/8 of the students saw the dinosaurs and 7/8 of the students saw either the jewelry collection or
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\frac{2}{8} of students only saw jewelry collection

<em><u>Solution:</u></em>

Given that, On a class trip to the museum,5/8 of the students saw the dinosaurs

7/8 of the students saw either the jewelry collection or the dinosaurs

<em><u>To find: Fraction of students only saw jewelry collection</u></em>

From given statement,

Fraction of students saw dinosaur = \frac{5}{8}

Fraction of students saw either the jewelry collection or the dinosaurs = \frac{7}{8}

Therefore,

Fraction of students only saw jewelry collection = Fraction of students saw either the jewelry collection or the dinosaurs - Fraction of students saw dinosaur

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