Answer:
i think its cancellation the others don't make sense.
Step-by-step explanation:
Answer:
Part 1) The perimeter is
Part 2) The diagonal is
Step-by-step explanation:
<u><em>The question in English is</em></u>
You have a rectangle whose base is twice the height and its area is 12
square centimeters. Calculate the perimeter of the rectangle and its diagonal
step 1
Find the dimensions of rectangle
we know that
The area of rectangle is equal to
so
----> equation A
The base is twice the height
so
----> equation B
substitute equation B in equation A
Find the value of b
step 2
Find the perimeter of rectangle
The perimeter is given by
substitute
step 3
Find the diagonal of rectangle
Applying the Pythagorean Theorem
substitute
Octagon has 8 sides so the sum of the angles of the octagon is 180(8-2)=180 (6)=1080 degrees
Answer:
the value of x = 3
Step-by-step explanation:
-3 (-5x+2)+x-3=39
open the bracket by multiply each by -3
15x-6+x-3=39
collect the like terms
16x-9=39
16x=39+9
16x=48
divide both sides by 16
x=3
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