4 years ago

Can someone help me for this

2 answers:

8 0

Well I would say the first one.. And possibly the second one on your list. But if I am wrong. Just stick with your gut felling. :) You got this :)

Kaylis [27]4 years ago

7 0

Solve for invers
switch x and y and solve for y
y=2x+5
x=2y+5
x-5=2y
(x-5)/2=y

y=(x-5)/2

it is a function is true

it is true that is the reflecttion of y=2x+5, but not y=2x so don't select this option

slope is 1/2, true

slope is defined, so it is false

y intercept s where x=0
y=(0-5)/2=-5/2
true

pick 1st,3rd,5th options

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3 years ago

Determine the length of the longest metal rod which could be stored in a rectangle box 20 cm by 50 cm by 30 cm.

navik [9.2K]

Answer:

61.64 cm

Step-by-step explanation:

The longest metal rod which could be stored in a rectangular box will be equal to its diagonal:

$\therefore \: length \: of \:metal \: rod \\ = \sqrt{ {l}^{2} + {b}^{2} + {h}^{2} } \\ = \sqrt{ {20}^{2} + {50}^{2} + {30}^{2} } \\ = \sqrt{400 + 2500 + 900} \\ = \sqrt{3800} \\ = 61.64414 \\ = 61.64 \: cm$