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Cerrena [4.2K]
3 years ago
5

Multiply (6 − 7i)(3 − 6i).

Mathematics
1 answer:
Leviafan [203]3 years ago
5 0

Answer:

-24 - 57i

Step-by-step explanation:

i'm assuming that this is a question about imaginary numbers and that i²= -1

we can expand the binomial by using the FOIL method (see attached)

(6 − 7i)(3 − 6i)

= (6)(3) + (6)(-6i) + (-7i)(3) + (-7i)(-6i)

=18 - 36i - 21i + 42i²   (recall that i²= -1)

= 18 - 57i + 42(-1)

= 18 - 57i - 42

= -24 - 57i

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What is the area of the beach ball with a diameter of 14 in. ?
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Answer:

The answer is 675.75 square Inches

Step-by-step explanation:

<h3><u>Given</u>;</h3>
  • Diameter (d) = 14 in.
<h3><u>To </u><u>Find</u>;</h3>
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<h3><u>Formula</u>;</h3>
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Now,

Radius (r) = diameter ÷ 2

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Now,

A = 4πr²

A = 4 × 22/7 × (7)² in.

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6 0
2 years ago
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Answer:

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3 years ago
If your grocery bill total was $205.67 and was reduced to $145.90 after coupons, what was the percent decrease? Round to the nea
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Step-by-step explanation:

start by subtracting the original value from the reduced value.

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Step-by-step explanation:

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