3 years ago

Is this true or false?????????

Mathematics

1 answer:

krok68 [10]3 years ago

8 0

You marked the right answer. It is true. XD

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Will give brainliest, thanks in advance!!

tester [92]

Answer:

-3+15i

Step-by-step explanation:

Apply complex arithmetic rule: $\left(a+bi\right)\left(c+di\right)=\left(ac-bd\right)+\left(ad+bc\right)i$

$\left(-3\cdot \:3-3\left(-2\right)\right)+\left(-3\left(-2\right)+3\cdot \:3\right)i$

-3 * 3 -3 (-2) = -3

$-3+15i$

8 0

2 years ago

Mia can finish her math homework in 30 minutes. Every night there are 45 problems for homework. How many problems can she finish

den301095 [7]

I believe that it would be 75

8 0

3 years ago

The projected T. rex is about

dolphi86 [110]

Answer: $scale\ factor=230$

Step-by-step explanation:

You need to analize all the information given in the exercise.

You know that the actual height of the T-rex on the projector lens is the following:

$actual\ height=2\ cm$

The height of the projected T-rex is:

$projected\ height=4.6\ m$

Make the conversion from meters to centimeters:

$projected\ heigth=(4.6\ m)(\frac{100\ cm}{1\ m})\\\\projected\ heigth= 460\ cm$

Therefore, the scale factor will be:

$scale\ factor=\frac{projected\ heigth}{actual\ heigth}$

Finally, you must substitute values into the equation and then you must evaluate in order to find the scale factor of the projection. You get that this is:

$scale\ factor=\frac{460\ cm}{2\ cm}\\\\scale\ factor=230$

7 0

3 years ago

Whats the equivalent fraction using the multiplier 2. 3/4

weeeeeb [17]

the equivalent fraction is 6/8 is the answer

4 0

3 years ago

Lamar has a summer job. He gets paid $7.25 an hour and a $150 bonus at the end of summer. The total Lamar earns can be modeled b

Alex17521 [72]

B.

Slope is the first number and intercept is the second

4 0

3 years ago