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weeeeeb [17]
3 years ago
11

Find all the complex square roots of W= 100 (cos 60 + I sin 60). Write the roots in polar form with theta in degrees.

Mathematics
1 answer:
serg [7]3 years ago
5 0

Answer:

2√3+2i

hope it helps

please mark Brainliest

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Suppose that contamination particle size (in micrometers) canbe modeled as
asambeis [7]

Answer:

c) 2

d) 0.96

Step-by-step explanation:

We are given the following in the question:

f(x) = 2x^{-3}, x > 1\\~~~~~~~= 0, x \leq 1

a) probability density function.

\displaystyle\int^{\infty}_{\infty}f(x) dx = 1\\\\\displaystyle\int^{\infty}_{-\infty}2x^{-3}dx = 1\\\\\displaystyle\int^{\infty}_{1}2x^{-3}dx\\\\\Rightarrow \big[-x^{-2}\big]^{\infty}_1\\\\\Rightarrow -(0-1) = 1

Thus, it is a probability density function.

b) cumulative distribution function.

P(X

c) mean of the distribution

\mu = \displaystyle\int^{\infty}_{-\infty}xf(x) dx\\\\\mu = \int^{\infty}_12x^{-2}dx\\\\\mu = (-\frac{2}{x})^{\infty}_{1}\\\\\mu = 2

d) probability that the size of random particle will be less than 5 micrometers

P(X

4 0
2 years ago
Simplify sec(t)cot(t) to a single trig function or constant with no fractions
lana66690 [7]

Answer:

make it make sense then could answer

4 0
2 years ago
The frist brand is 30% and the second on is 55% in order to obtain 30 gallons of mixture that contains 35% how many gallons of e
snow_tiger [21]

yeet


first brand quantity is x

2nd brand quantity is y


x+y=30

0.3x+0.55y=0.35(30) or 0.3x+0.55y=10.5

solve for x and y

multiply first equation  by -0.3

-0.3x-0.3y=-9

add to 2nd equation


0.3x-0.3y=-9

<u>0.3x+0.55y=10.5 +</u>

0x+0.25y=1.5


0.25y=1.5

divide both sides by 0.25

y=6

sub back

x+y=30

x+6=30

x=24


you need 24 gallons of the first brand and 6 gallons of the 2nd brand

4 0
3 years ago
Read 2 more answers
Find the volume. <br><br> A. 72 mi³ B. 75 mi³ C. 36 mi³ D. 104 mi³
NARA [144]

Answer:

A.72

Step-by-step explanation:

V=1

4h﹣a4+2(ab)2+2(ac)2﹣b4+2(bc)2﹣c4

V=1

4h﹣a4+2(ab)2+2(ac)2﹣b4+2(bc)2﹣c4=1

4·3·﹣64+2·(6·8)2+2·(6·10)2﹣84+2·(8·10)2﹣104=72

3 0
2 years ago
Will mark brainly<br> ASAP
Black_prince [1.1K]
The answer is 56 since complementary angles add up to 90 degrees and one of them is 34 degrees
7 0
2 years ago
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