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3 years ago

Which expression is equivalent to 4+5i•(2-7i)?

Mathematics

1 answer:

Westkost [7]3 years ago

5 0

Answer:

(4 + 5i)(2 - 7i) = 8 - 28i + 10i + 35

= 43 - 18i

4 + 5i(2 - 7i) = 4 + 10i + 35

= 39 + 10i

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60% of all adults ages 35-44 drank coffee in the last year and 50% of all adults drank coffee. how much more likely are adults a

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10% more likely

You subtract 50 from 60 to get 10

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3 years ago

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Lisa [10]

Answer:

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3 years ago

Read 2 more answers

Find the rate of change between (-3,6) (0,-3)

marin [14]

<h3>The rate of change between (-3,6) (0,-3) is -3</h3>

Solution:

Given that,

We have to find the rate of change between (-3,6) (0,-3)

The rate of change is given as:

$Rate\ of\ change = \frac{y_2-y_1}{x_2-x_1}$

From given,

$(x_1, y_1) = (-3, 6)\\\\(x_2, y_2) = (0, -3)$

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$Rate\ of\ change = \frac{-3-6}{0+3}\\\\Rate\ of\ change = \frac{-9}{3}\\\\Rate\ of\ change = -3$

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3 0

3 years ago

Suppose that we were going to conduct a study to determine if there is an decrease in risk of getting lung cancer based on wheth

nalin [4]

Answer: Option C

Step-by-step explanation:

In group(1), the risk is= 5/2000 x 100

= 0.25

In group(2), the risk is= 5/1000 x 100

= 0.5

The sample relative risk is= 0.25/0.5

= 0.5

So, option C is correct.

7 0

3 years ago

The equation $x + {y = 2 can be rewritten in a form that reveals the y-intercept of the graph of the equatior

SSSSS [86.1K]

Answer:

$y = \frac{2}{z} - \frac{x}{z}$

Step-by-step explanation:

Given

$x + zy = 2$

Required

Rewrite to show y-intercept

We have: $x + zy = 2$

Subtract x from both sides

$zy = 2-x$

Divide both sides by z

$y = \frac{2}{z} - \frac{x}{z}$

The y intercet is: $\frac{2}{z}$

7 0

2 years ago