Answer:
4 cannot be the measure of the third side. This is because of the Triangle Inequality Theorem, which states that the sum of two sides of a triangle must be greater than the third side (A+B>C, A+C>B, B+C>A) In this example, if side C were 4, side C (4) plus side A (8) would be 12. Since side B is 12, and 12 cannot be greater than 12, 4 would not work.
Answer=8
Step-by-step explanation:
Answer:
(y−7)(y+12)
Step-by-step explanation:
Answer:
3
Step-by-step explanation:
Note that 12 is obtained by multiplying the first term (4) by 3; 36 is obtained by mult. the preceding term (12) by 3, and so on. Thus, the common ratio is 3.
Answer: Thanks For The Points
Step-by-step explanation:
THANKS YOUR THE BEST
<span> x^2 - 8x - 28y - 124 = 0 </span>
Rearranging,
<span>x^2 - 8x = 28y + 124 </span>
Using completing the square method on the left hand side:
<span>x^2 - 8x + 16 = 28y + 140 </span>
<span>Factoring the left hand and right hand side:</span>
<span>(x - 4)^2 = 28(y + 5). </span>
<span>Now just factor out 4 and you have </span>
<span>(x - 4)² = 4[7(y + 5)] </span>
<span>So,Vertex is at (4, -5)
Focus is at F(4, -5 + 7) = F(4. 2)
And the directrix is y = -5 - 7
= -12. </span>