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xenn [34]
3 years ago
12

how do you write the quotient (9+i) over (9-i) in standard form? I need the answer but more importantly, I need to learn how to

solve these kinds of problems.
Mathematics
1 answer:
Scorpion4ik [409]3 years ago
6 0
Since they are the conjugates of each (9-a and 9+a are conjugates, or with any number replacing 9) , we multiply it by (9+i)/(9+i) to get (9+i)^2/(9-i^2)=(81+2i+i^2)/(9-(-1))=(81-1+2i)/(10)=80/10+2i/10=8+i/5. Conjugates work because they make i into i^2 (-1) without any of the sneaky i's in the middle!
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Ben bought a digital camera for $90. The tax rate is 6%. Which proportion can be used to find the amount of tax Ben will pay? A.
Radda [10]
(90*.06)(this is the percentage converted to a decimal) this should equal the amount of tax that Ben will pay.

So the answer would be
90*6%

5 0
3 years ago
Please help 40 points
Natasha2012 [34]

Answer:

-2 5/9

Step-by-step explanation:

w + (-x) - 2/3

Let w = -5/9  and x = 4/3

-5/9  - 4/3 - 2/3

Get a common denominator

-5/9  -4/3*3/3  -2/3*3/3

-5/9  -12/9  -6/9

Add

-23/9

Change to a mixed number

-2 5/9

4 0
3 years ago
Michael is 17 years old than john. In 4 years the sum of their ages will be 49. Fins Michaels present age.
alexandr1967 [171]
Wouldnt it be 21 idk dont pay attention to me lol
3 0
3 years ago
Read 2 more answers
Kite ABCD is rotated 180 degrees clockwise about the origin and then reflected over the y-axis, followed by a reflection over th
sleet_krkn [62]

Answer:

Step-by-step explanation:

Answer:

(-5, 1)

Explanation:

We are given a kite on the graph which is rotated 180° clockwise about the origin and then reflected over the Y axis followed by reflection over the X axis.

We are to find the coordinates of point A after the complete transformation.

A (-5, 1)

When a point is rotated 180° clockwise about the origin, the signs of its coordinates change.

A (-5, 1) ---> A' (5, -1) - after clockwise rotation of 180 degrees about origin

Then this point A' is reflected over the Y axis where the y coordinate remains the same but x coordinate changes its sign.

A' (5, -1) ---> A'' (-5, -1) - after reflection through y axis

Now this point A'' is reflected over the X axis where the x coordinate remains the same while y coordinates changes its sign.

A'' (-5, -1) ---> A''' (-5, 1) - after complete transformation

7 0
3 years ago
Given the expression ‘6 more than twice a number’, what is the value of the expression if the number is equal to 5?
stepan [7]

Answer:

Expression: 2x + 6

Value of the expression when x = 5: 16

Step-by-step explanation:

Let's first focus on the expression: '6 more than twice a number'. Twice a number is the same as saying two times a number. Let's have that number be represented by x. Twice a number would mean 2x, and 6 more than that would just be 2x + 6.

We'll then plug in 5 for x to get the value of the expressinn:

2(5) + 6 = 10 + 6 = 16

5 0
3 years ago
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