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3 years ago

Multiply and simplify the product. –12i × 3i Select the product. 36 -36 36i -36i

Mathematics

2 answers:

Alexxandr [17]3 years ago

6 0

Answer:

Step-by-step explanation:

$i=\sqrt{-1}\to i^2=(\sqrt{-1})^2=-1\\\\-12i\times3i=(-12)(3)i^2=(-36)(-1)=36$

bazaltina [42]3 years ago

4 0

Answer:

Step-by-step explanation:

–12i × 3i

Multiply the numbers

-12*3 = -36

Multiply the imaginary number

i*i= i^2

We know i^2 = -1

-36 * -1 = 36

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Which graph represents no solution

Cerrena [4.2K]

Answer:

D. Parallel lines

Step-by-step explanation:

Lines which intersect have their point of intersection as the solution to the system of equations. If there is no solution then two lines do not intersect. The two lines must be parallel.

7 0

3 years ago

Nicole is playing a video game where each round lasts \dfrac{7}{12} 12 7 start fraction, 7, divided by, 12, end fraction of an

Harrizon [31]

Total number of hours she schduled to play the game = 3 $\frac{3}{4}$ hours.

Let us convert mixed fraction into improper fraction

$3\frac{3}{4} = \frac{3*3+4}{4} = \frac{13}{4} \ hours.$

Duration of each round = $\frac{7}{12}$ .

In order to find the number of rounds Nicole can play, we need to divide total number of hours by duration of each round.

$\frac{13}{4}$ ÷ $\frac{7}{12}$

Converting division sign into multiplication flips the second fraction.

$=\frac{13}{4} \times \frac{12}{7}$

Crossing out 12 by 4, we get 3 on the top of second fraction.

$=\frac{13}{1} \times \frac{3}{7}$

$=\frac{39}{7} = 5.57...( Approximately).$

Because problem is about number of rounds.

So, total number of round would be 5.

5 0

3 years ago

Read 2 more answers

Rewrite the equations using a negative exponent!! ill give brainliest, any random or incomplete answers will be reported!!

vesna_86 [32]

Answer:

11. $x^{-2}$

12. $m^{-3}$

13. $(x+2y)^{-4}$

14. $(x+3y)^{-2}$

15. $(x+y)^{-3}$

16. $(2x+3y)^{-6}$

17. $(-3m-9)^{-3}$

18. $x^{-4}$

Step-by-step explanation:

In all of them you just subtract the bottom exponent from the top exponent.

5 0

3 years ago

Read 2 more answers

Sovle 4 pls and thank you

max2010maxim [7]

Answer:

3x^5y

Step-by-step explanation:

6 0

3 years ago

An athlete runs 8 miles in 50 minutes on a treadmill. At this rate how long will it take the athlete to run 9 miles? Your answer

zvonat [6]

56.25 minutes

Explanation: to find how long it takes to run one mile, divide 50 minutes by 8 miles.
50/8 = 6.25
Then you can multiply 6.25 by 9 to find the answer.
9 x 6.25 = 56.25 minutes

4 0

3 years ago