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3 years ago

Simplify each of the following: 2 1. (3+4i ) + ( 19 - 5i)

Mathematics

1 answer:

ira [324]3 years ago

6 0

I hope this helps you

(3+19)+(4i-5i)

22-i

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Mei is writing 4.28 as a mixed number. Find her mistake and correct it.

Novay_Z [31]

4.28 is a decimal and not a mixed number. To write it as a mixed number you keep the 4 and put 28 over 100 then simplify.

4.28= 4 28/100 (simplify)
4 28/100= 4 14/50= 4 7/25

4.28 as a mixed number would be 4 7/25

7 0

3 years ago

Read 2 more answers

The data show the approximate lengths, in feet, of the six longest snakes and the six longest fish

AVprozaik [17]

Answer:

greater greater then

Step-by-step explanation:

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3 years ago

Please differentiate this problem

strojnjashka [21]

Answer:

dy/dx = d/dx sin(x-3/x+2)

dy/dx = cos(x-3/x+2) . d/dx (x-3/x+2)

dy/dx = cos(x-3/x+2) . (x + 2 - x + 3)/(x+2)²

dy/dx = [5cos(x-3/x+2)]/(x + 2)²

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3 years ago

Solve the following system of equations. Express your answer as an ordered pair in the format (a,b), with no spaces between the

kirill [66]

Answer:

$\huge\boxed{(2,4)}$

Step-by-step explanation:

2x + 5y = 16 ------------------(1)

-5x -2y = 2 ------------------(2)

<u>Multiplying (1) by 5 </u>

5(2x+5y) = 16*5

10x+25y = 80 ----------------(3)

<u>Multiplying (2) by 2</u>

2(-5x-2y) = 2*2

-10x - 4y = 4 -----------------(4)

Adding Eq. (3) and (4)

10x + 25y -10x -4y = 80 + 4

25y - 4y = 84

21y = 84

Dividing both sides by 21

y = 4

$\rule[225]{225}{2}$

Now, Putting y = 4 in Eq. (1)

2x + 5(4) = 16

2x + 20 = 16

2x = 20 - 16

2x = 4

Dividing both sides by 2

x = 2

$\rule[225]{225}{2}$

Ordered Pair = (x,y) = (a,b) = (2,4)

$\rule[225]{225}{2}$

Hope this helped!

<h2>~AnonymousHelper1807</h2>

6 0

3 years ago

If a procedure meets all of the conditions of a binomial distribution except the number of trials is not fixed, then the geomet

natima [27]

Answer:

Given p = 0.07 as the probability that someone is a universal donor

In case of Geometric Distribution, Probability of getting the first success on nth trial is given by

$P (X=n) = p (1-p) ^ {n-1}$

where p is the probability of success on any one trial and (1-p) shows the probability of failure.

So the probability of the first subject to be a universal blood donor will be the seventh person is

$P (X=7) = 0.07 (1-0.07) ^ {7-1} = 0.07 (0.93) ^ 6 = 0.07*0.647 = 0.0453$

So the final probability is 0.0453

3 0

3 years ago