All angles add to 180 in a triangle. So 180 - 102 - 31 =47
Answer:
x² + 4x - 21
Step-by-step explanation:
Given the solutions of x = 3 and x = -7, moving the constant to the other side and setting both equations equal to '0':
x - 3 = 0 and x + 7 = 0
So, the two binomials that make up the quadratic are:
(x - 3)(x + 7)
Use FOIL: x² + 7x - 3x - 21
Combine like terms: x² + 4x - 21
Haha, you see your first triangle is 3,4,5 and the next is 6,8,10 the second triangle is twice as big as the first one! 3+3=6 4+4=8 and 5+5=10 there just doubled.
X represents the number of weeks the bird feeders are filled
Answer:
T≥2
Step-by-step explanation:
3t+9≥15
3T≥15-9
3T≥6
T≥2
