Answer:
C
Step-by-step explanation:
The diagonal of the square creates 2 right triangles with the diagonal as the hypotenuse.
Using Pythagoras' identity in either of the right triangles.
The square on the hypotenuse is equal to the sum of the squares of the other 2 sides.
Let x be the side of the square, then
x² + x² = 40², that is
2x² = 1600 ( divide both sides by 2 )
x² = 800 ( take the square root of both sides )
x = 
= 
= = 10
= 10 × 
= 10 × 2
= 20 → C
(a) We have ⌊<em>x</em>⌋ = 5 if 5 ≤ <em>x</em> < 6, and similarly ⌊<em>x</em>/3⌋ = 5 if
5 ≤ <em>x</em>/3 < 6 ==> 15 ≤ <em>x</em> < 18
(b) ⌊<em>x</em>⌋ = -2 if -2 ≤ <em>x</em> < -1, so ⌊<em>x</em>/3⌋ = -2 if
-2 ≤ <em>x</em>/3 < -1 ==> -6 ≤ <em>x</em> < -3
In general, ⌊<em>x</em>⌋ = <em>n</em> if <em>n</em> ≤ <em>x</em> < <em>n</em> + 1, where <em>n</em> is any integer.
I do not understand what is being asked in (c) and (d), so you'll have to clarify...
It should be 3 feet perramps
Answer:
57.875 sq ft
Step-by-step explanation:
multiply 9.5 by 6.75: 64.125
also multiply 2.5*2.5 which is 6.25
Then you would subtract 64.125 by 6.25
Which equals 57.875 sq ft
Actually Welcome to the Concept of the linear equations.
==> 2(x+10)=60
=> x+10 = 30
=> x = 30-10
==> x = 20
