Answer:wow this is hard
Step-by-step explanation:
<span>These triangles are impossible:
a triangle with sides of 3 inches, 4 inches, and 8 inches
(the longest side is greater than the sum of the other 2 sides)
an obtuse equilateral triangle
(all angles in an </span><span>equilateral triangle are acute)
</span>
<span>a triangle with two right angles
The angles of ALL triangles must sum exactly to 180 degrees. Two right angles sum to 180 degrees so the third angle would have to be zero degrees.
</span>
Answer:
Option B: 3x + 3y - 3
Step-by-step explanation:
In an isosceles triangle, the two congruent sides are equal.
We are told the base is; x - y - 2 units
Now let each of the congruent sides be represented as A.
Thus the perimeter equation will be;
P = 2A + x - y - 2
Now, we are told that the perimeter is; 7x + 5y - 8 units
Thus;
7x + 5y - 8 = 2A + x - y - 2
Rearranging gives;
7x - x + 5y + y - 8 + 2 = 2A
2A = 6x + 6y - 6
Divide through by 2 to give;
A = 3x + 3y - 3 units
Answer:
= 0.45
= 0.54 repeating
Step-by-step explanation:
You can solve these easily with a calculator.
= 0.45
= 0.54 repeating
Answer:
(1)
(2)
If we divide equations (2) and (1) we got:
And then 
And then we can find the value 
and we got from equation (1)
And then the general term for the sequence would be given by:
And the best option would be:
C) a1=759,375; an=an−1⋅(1/15)
Step-by-step explanation:
the general formula for a geometric sequence is given by:
For this case we know that 
Then we have the following conditions:
(1)
(2)
If we divide equations (2) and (1) we got:
And then
And then we can find the value and we got from equation (1)
And then the general term for the sequence would be given by:
And the best option would be:
C) a1=759,375; an=an−1⋅(1/15)
