Answer:
6x
Step-by-step explanation:
Answer:
Step-by-step explanation:
<u>Use the law of cosines to find the side AB:</u>
<u>Use the Heron's area formula next:</u>
- , where s- semi perimeter
- s = 1/2[x + x + 3 + ) = 1/2 (2x + 3 + )
- s - a = 1/2 (2x + 3 + - 2x - 6) = 1/2 ( - 3)
- s - b = 1/2 (2x + 3 + - 2x) = 1/2 ( + 3)
- s - c = 1/2 (2x + 3 + - 2) = 1/2 (2x + 3 - )
<u>Now</u>
- (s - a)(s - b) = 1/4 [(x²+3x+9) - 9] = 1/4 (x² + 3x)
- s(s - c) = 1/4 [(2x + 3)² - (x² + 3x + 9)] = 1/4 (3x²+ 9x) = 3/4(x² + 3x)
<u>Next</u>
- A² = 3/16(x² + 3x)(x² + 3x)
- 300 = 3/16(x² + 3x)²
- 1600 = (x² + 3x)²
- x² + 3x = 40
<u>Substitute this into the first equation:</u>
The answer is:
3(x+2)=3x+6
0 0 (0,0)
11 2 (11,2)
22 4 (22,4)
33 6 (33,6)
Answer:
(-infinity, 3)
Step-by-step explanation:
-3x-9 > -18
-3x>-9
when you divide by negative number switch the inequality to other side(flip the inequality)
x<3
it would be an open circle
and the arrow would be going from the open circle on 3 to the left