Answer:
12.5
Step-by-step explanation:
12.5 multiplied by 20 is 250 which you divide by 2 to get the area. it plugs in to the triangle area formula which is 1/2 base times height.
Answer:
5 =y
Step-by-step explanation:
-4y-3=5-3y+6-19
Combine like terms
-4y -3 = -3y -8
Add 4y to each side
-4y+4y -3 = -3y+4y -8
-3 = y -8
Add 8 to each side
-3+8 = y-8+8
5 =y
Use the law of cosines:
c² = 8² + 11² - 2•8•11 cos(37°)
c² ≈ 44.4402
c ≈ 6.66634