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3 years ago

Simplify 2(3-7i)-i(-4+5i)

Mathematics

1 answer:

andreev551 [17]3 years ago

3 0

Answer:

$- 5i^2 + - 10i + 6$

Step-by-step explanation:

2(3-7i)-i(-4+5i)

$(6 - 14i) + (4i - 5i^2)$

$- 5i^2 - 10i + 6$

you distribute the 2 to the (3-7i) getting 6-14i. then distribute the -i to the (-4+5i) getting 4i-5i^2. then simply combine like terms

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4 years ago

Suppose that there are two types of tickets to a show: advance and same-day. The combined cost of one advance ticket and one sam

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This is the entire problem:
Suppose that there are two types of tickets to a show: advance and same-day. The combined cost of one advance ticket and one same-day ticket is $ 40. For one performance, 25 advance tickets and 30 same-day tickets were sold. The total amount paid for the tickets was $1075 . What was the price of each kind of ticket?

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Let x = advance ticket cost and y = same-day tickets cost
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