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Svet_ta [14]
3 years ago
12

Let v=-3i and w=2 - 4i. Find v*w

Mathematics
1 answer:
Mice21 [21]3 years ago
7 0

Answer:

v×w =  -6i-12

Step-by-step explanation:

hello :

Let v=-3i and w=2 - 4i.

v×w = -3i(2-4i) = -6i+12i² = -6i-12    ... i² = -1

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podryga [215]
220 + 300 = \boxed{\bf{520}}
3 0
3 years ago
C is the midpoint of segment AD. B is the midpoint of segment AC. BC = 12. What is the length of segment AD? *
guapka [62]

Answer:

48

Step-by-step explanation:

A - B - C - - - D

 12 + 12 + 24 = 48

Segment B is midpoint between AC therefore the length between AB is equal to the length between BC.  C is midpoint of of AD therefore the length between AB + BC is equal to the length between CD.  IF AB is 12 then AB is 12.  AC will be 24.  Since CD is equal to AD, CD must also be 24.  AD is distance AC plus CD = 48.

7 0
3 years ago
I need help solving this proportion!! <br><br> 3/x-1 = 2/x+4
Gelneren [198K]
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3/x - 1 - 2/x = 4

2. Move 1 to the right side of proportion and change it's sign as well:
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3. Sum numerators in the left side of proportion since they have common denominator (x) abd also sum the numbers in the right side too:
(3-2)/x = 5

4. Calculate numerator in the left side of proportion:
1/x = 5

5. Move 1 to the right side of proportion by dividing that side by it:
x = 1/5

3 0
4 years ago
Find the perimeter of a rectangle whose length is 150 m and the diagonal is 170 m work
hram777 [196]
P=2l+2w
150(2)+170(2)
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7 0
3 years ago
If HJ = 7x-27, find the value of x.​
daser333 [38]

Answer:

x = HJ/7 + 27/7

Step-by-step explanation:

Hope this helps!

4 0
3 years ago
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