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Sloan [31]
3 years ago
9

What is the magnitude of -2a - 3b when a=3i+9j and b=4i-6j?

Mathematics
1 answer:
Alex787 [66]3 years ago
3 0

Answer:

Dear mcdeagon,

Answer to your query is provided below:

Magnitude of -2a-3b = -18i-6j

Step-by-step explanation:

When a = 3i+9j and b = 4i-6j

Magnitude of -2a-3b will be calculated by putting value of a and b

So, -2a-3b = -2(3i+9j)-3(4i-6j)

= -6i-18j-12i+12j = -18i-6j

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we need the graph to answer the question

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we wont know much he makes each week without the graph

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What is the common difference of the arithmetic sequence graphed below?
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3 0
3 years ago
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The number of bacteria in a culture is expected to grow 82% per hour over the next several hours. The predicted change in the nu
Advocard [28]
If my simplification is valid the answer is:

1.4 % growth each minute

I don’t feel like the representation
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4 0
2 years ago
A salesperson makes 18% commission on every TV sold. If the salesperson sold four TV’s at $885 each, how much commission did the
Levart [38]

Answer:

They made a $531 commission.

Step-by-step explanation:

The given is:

  • The price of each TV is $885
  • The commission is 18% on every TV sold
  • The salesperson sold 4 TV's

We need the value of the commission

Let us find the commission of every TV, then find the total amount of all

∵ The price of each TV is $885

∵ The commission is 18 %

→ Find 18% of $885

∴ The commission on every TV = 885 × 15%

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∴ The commission on every TV = $132.75

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They made a $531 commission.

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4 years ago
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