Answer:
a2+2a−8
Step-by-step explanation:
Expand (a+4)(a−2)(a+4)(a-2) using the FOIL Method.
a⋅a+a⋅−2+4a+4⋅−2
Answer:
∠ AFE = 80°
Step-by-step explanation:
Since BD is a straight line , then
∠ AFB + ∠ AFE + ∠ EFD = 180°, that is
50° + ∠ AFE + 50° = 180°
100° + ∠ AFE = 180° ( subtract 100° from both sides )
∠ AFE = 80°
Standard form:
7,220,032
expanded form: 7,000,000+200,000+20,000+30+2
scientific notation:
7.220032×10^6
Answer:
2 seconds and 38 seconds
Step-by-step explanation:
h=-16t²-vot
1,200=-16t²-640t
turn this into standard form
16t²-640t+1200=0
now plug thes numbers into the quadratice formula
a 16 b -640 c 1200
solve with quadratic formula to get ≅2 and ≅38 seconds
