An isosceles triangle has two sides of equal length. The third side is 7 less than twice the length of one of the other sides. I
2 answers:
Answer:
Length of the third side is 18.5 cm
Step-by-step explanation:
An isosceles triangle has two sides of equal length. The third side is 7 less than twice the length of one side of the other side.
Let two equal side of the isosceles triangle = x cm
and third side = y cm
Then y = ( 2x - 7 ) --------(1)
Perimeter of the triangle is 44 cm
then x + x + y = 44
2x + y + 44 -----------(2)
Now we substitute the value of y from equation (1) to equation (2)
2x + ( 2x - 7 ) = 44
4x - 7 = 44
4x = 44 + 7
4x = 51
x = = 12.75 cm
Now we put x = 12.75 in equation (1)
y = 2(12.75) - 7
= ( 25.5 - 7 )
= ( 18.5 )cm
Therefore, length of third side is ( 18.5 ) cm.
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Answer:
The monthly fee for cable and internet is 200.
Step-by-step explanation:
Given:
Amount spend on one year for cable and internet service is 2440.90.
Now, to get the monthly fee for same amount spend on a year, by dividing the amount spend on a year with 12. As in one year there are 12 months.
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Answer:
see attached
Step-by-step explanation:
The equation can be rewritten to vertex form, so you can tell the vertex is at (2, -5). The leading coefficient of 2 means the points will be twice as far apart vertically than they would be if the leading coefficient were 1. A couple of points are shown in the attached.
y = 2(x^2 -4x) +3
y = 2(x^2 -4x +4) +3 -8 . . . . . . complete the square
y = 2(x -2)^2 -5 . . . . . . . . . . . . finish putting in vertex form
