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3 years ago

Help me with this question I don't get it

Mathematics

1 answer:

mylen [45]3 years ago

6 0

No she will have more than enough paint have a wonderful evening

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If the complex number x = 3 + bị and x/2 = 13, which is a possible value of b?

Virty [35]

Answer:

Step-by-step explanation:

Given,

x = 3 + bị

Again,

x ÷ 2 = 13

Multiplying both the sides by 2, we can get.

(x ÷ 2) × 2 = 13 × 2

or, x = 26

As we find the value of x, we can now complete the complex number which is b.

x = 3 + bị

Putting the value of x, we can get,

26 = 3 + bi

or bi = 26 - 3

or, b = 23.

Therefore, the possible value of b = 23.

7 0

4 years ago

expectation of 24.0 mm and a standard deviation of 0.3 mm. What are the expectation and variance of the length of the machine pa

Elena L [17]

Are you sure the question is written correctly? Sounds like the expectations would just be the same (24.0) and the variance is the square of the standard deviation (so it would be 0.09).

4 0

3 years ago

HELP DUE AT MIDNIGHT

Hatshy [7]

8 and 4 are corresponding angles

5 0

3 years ago

Read 2 more answers

Suppose that $9000 is placed in an account that pays 2% interest compounded each year. Assume that no withdrawals are made from

AlekseyPX

Answer:

First year would be 9180 and the second year would be 9363.6

Step-by-step explanation:

I just take the interest 2% make it a decimal .02 and times that by 9000 which gives you 180 then just add that to the 9000 for the first year and then for the second take 9180 times .02 which gives you 183.6 and just add that too 9180 to get 9363.6

7 0

3 years ago

Jessica traveled to Portland by car. Going there took 3 hours, and the return trip lasted 6 hours. Jessica averaged a speed of 4

Nataly_w [17]

Answer:

The average speed of the trip there is <u>86 mph.</u>

Step-by-step explanation:

Given:

Time taken to reach Portland = 3 hours

Time taken to come beck from Portland = 6 hours

Average speed for the returning trip = 43 mph

Distance traveled for the returning trip can be obtained by multiplying the returning speed by returning time. Therefore, distance for returning trip is:

$D=speed\times time=43\times 6=258\ miles$

Now, distance traveled for the return trip is same as going to the trip.

So, distance traveled by Jessica going to Portland = 258 miles.

Time taken to go there = 3 hours

Therefore, speed of the trip there is given as the ratio of distance and time and is given as:

$\textrm{Average speed}=\frac{Distance}{Time}\\\textrm{Average speed}=\frac{258}{3}=86\ mph$

Therefore, the average speed of Jessica's car to go to Portland is 86 mph.

3 0

3 years ago