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Anna007 [38]
3 years ago
9

If x and y are positive integers and if x/y=1 and (x+y)squared=z which of the following can equal z?

Mathematics
1 answer:
Andreyy893 years ago
5 0

Answer:

C. 16

Step-by-step explanation:

√16= 4 =2*2

pls mark me brainliest

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What expression Is equivalent to 27/125 <br> (3/5)3<br> (3/4)2<br> (3/5)<br> 3 5
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A phone number is generated using the digits 1, 2, 2, 4, 5, 6, and 2. How many different phone numbers can be generated?
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infinite amount

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4 years ago
A fence 6 ft high runs parallel to the wall of a house at a distance of 5 ft. Find the length of the shortest ladder that extend
Anettt [7]

Answer:

L = 15.53 ft

Step-by-step explanation:

using diagram which is attached below

now, using Pythagoras theorem

L² = b²  + (5 + x)²...............(1)

using similarity of triangle

\dfrac{x}{6}=\dfrac{5+x}{b}

b=\dfrac{5+x}{x}6

from equation (1)

L^2 = (\dfrac{5+x}{x}6)^2 + (5 + x)^2

     = (5+x)^2(1+\dfrac{36}{x^2})

\frac{\mathrm{d} L^2}{\mathrm{d} x}= 2(5+x)(1+\dfrac{36}{x^2})+(5+x)^2(\dfrac{-2\times 36}{x^3})

\frac{\mathrm{d} L^2}{\mathrm{d} x}= (5+x)(2-\dfrac{72\times 5}{x^3})

for maxima or minima

\frac{\mathrm{d} L^2}{\mathrm{d} x}=0

x = -5 and x =  ∛190  = 5.74

on second derivative 5.74 is the value which comes out to be minimal value which is the distance between the fence and ladder

now,

L² = 241.38

L = 15.53 ft

7 0
3 years ago
Claculate the height (x) of the tree.
Alexeev081 [22]

Answer:

50√3/3

Step-by-step explanation:

30-60-90 triangle

50:x = 2sqrt3 : 2

50*2 =100

100/2sqrt3 = ​3

​50√

​3

​

Please mark me brainiest..

​​

​​

5 0
4 years ago
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