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sladkih [1.3K]
3 years ago
15

Which of the following is an irrational number? *

Mathematics
1 answer:
klemol [59]3 years ago
7 0

Hi There!

Question - Which of the following is an irrational number? *

Irrational Number - is a number that cannot be expressed as a fraction because its a decimal that goes on forever.

Answer: 0.3838383838....

Hope This Helps :)

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Http://mathsfirst.massey.ac.nz/Algebra/SystemsofLinEq/EMeth.htm this website explains it well 
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3 years ago
Use the identity (x+y)(x2−xy+y2)=x3+y3 to find the sum of two numbers if the product of the numbers is 28, the sum of the square
fgiga [73]

Answer:

Step-by-step explanation:

1) f(x) = x+y , xy = 49 --> f(x) = x+49/x

f '(x) = 1-49/x2 , x = ±√49 , choose x = +7

y = 49/x = 7

smaller = 7

larger = 7

2) Vertical Distance is difference between the two functions

V(x) = x+56 - x2, V '(x) = 1 -2x --> x = 1/2 --> V(1/2) = 56.25 <---Max Vertical distance

Boundary at -7 and 8 are less

3) I googled the equation, it is really y(n) = kn/(49+n2)

y '(n) = (k(49+n2) - 2kn2)/(49+n2) , Setting to zero, k(49+n2) -2kn2 = 0 , n = 7

4) Let x and y be the sides of the rectangle. A = xy = 37.5 Million or y = 37.5/x

The length of the fences is f(x) = 2x + 3y = 2x+112.5/x

f '(x) = 2-112.5/x2 --> x = √56.5 = 7.5 and y = 37.5/7.5 = 5 then scale by √Million

smaller = 5000 ft and larger = 7500 ft

this took me ages to work out so hopefully it helped

4 0
2 years ago
Read 2 more answers
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Natasha_Volkova [10]
No actually you can just multiply both sides of the equation by 2 and get y-4=20. then add 4 to both sides to get y=24.
3 0
3 years ago
What’s the answer to this question ?
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Answer:

Step-by-step explanation:

\frac{3}{4} x \frac{8}{3} =2

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The measure of angle θ is 7pi/4 . The measure of its reference angle is *Blank* °, and tan θ is *blank*
sukhopar [10]

Since the measure of angle \Theta is \frac{7\Pi }{4}

The measure of its reference angle = \frac{7\times 180^{\circ}}{4}

==315^{\circ}

Now we have to compute the value of \tan \Theta

\tan \Theta = \tan \frac{7\Pi }{4}

= \tan (2\Pi -\frac{\Pi }{4})

The value of ((2\Pi -\frac{\Pi }{4})) lies in the fourth quadrant. In fourth quadrant, the value of tan is always negative.

So, \tan (2\Pi -\frac{\Pi }{4})

= -\tan (\frac{\Pi }{4})

= -1.

5 0
3 years ago
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