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katrin [286]
4 years ago
12

10(4 - 3i ) = 1) 40-3i 2) 40-30i 3) 40+30i

Mathematics
2 answers:
dusya [7]4 years ago
4 0
10(4-3i)
=10*4-10*3i
=40-30i

Open the bracket by multiplying each term by 10
love history [14]4 years ago
3 0
2 because 10×4 is 40 and -3i×10 is -30i making it 40-30i
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Because of a problem in the program, the timer in a video player did not begin counting until the video had been playing for sev
Bess [88]

Answer:

105 frames

Step-by-step explanation:

Given that 25 frames are played per second

25 frames= 1 sec

The video already played 3 and 2/5 seconds before the player started to count 0

Write 3 and 2/5 seconds as an improper fraction

=(5*3)+2 / 5 = 17/5 seconds

Multiply by 25 frames

17/5 *25 =85 frames

So according to the video counter,after 17/5 seconds,it should count 85 frames.However,at 0 seconds,it indicated a count of 190 frames.Thus,to get the number of frames that were already in count you subtract 85 frames from the 190 frames.

190-85=105 frames.

Step-by-step explanation:

3 0
3 years ago
Which mathematical sentence most accurately expresses the information in the problem below? Crystal has 121 compact discs that s
ExtremeBDS [4]

Crystal has 121 compact discs. The total number of boxes required are 5.

<u>Solution:</u>

Given, Crystal has 121 compact discs that she wants to put into boxes.  

Each of the boxes that she brought home holds 25 discs.  

We have to find how many of these boxes will she need for all of her discs?

Now, we know that, number of boxes required =\frac{\text {total number of discs}}{\text {capacity of one box}}=\frac{121}{25}=4.84=5

Here we took 5 because 0.84 means that box with discs less than 25 still we require a box.  

Hence, the total number of boxes required are 5.

5 0
4 years ago
PLEASE EXPLAIN Find the area and perimeter of the rectangle whose sides are lengths 2x + 3 and 4x
SIZIF [17.4K]

Area = 4x(2x + 3) = 8x2 + 12x

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4 0
3 years ago
What is the value of 3(x2 – 4x) when x
telo118 [61]

Answer:

i got -30 ._.

Step-by-step explanation:

5(2)=10

5(-4)=-20

10-20=-10

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4 0
3 years ago
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-2x - 6 = -2x - 2 - 4        <em>distributed -2 on the left and on the right</em>

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<u>+2x     </u>   <u>+2x      </u>

     -6 =        -6

        TRUE

Since this is a true statement, there are infinite solutions (aka All Real Numbers)

Answer: C

8 0
4 years ago
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