Answer:
865
Step-by-step explanation: The set of possibilities are:
Subcommittee is of 4 people according to:
4 teachers 0 other member total possibilities 1
3 teachers 1 teachers C₄,₃ = 4 and other member 6 6*4 = 24
2 teachers 2 C₄,₂ = 4!/2! = 12 2 (om) and C₆,₂ = 6!/4! = 30
30*12 = 360
1 teacher 3 (om) 4 and C₆,₃ = 6!/3! = 120
120*4 = 480
Total ways of committee 1 + 24 + 360 + 480 = 865
Answer:
5.625 or 5-5/8 or 45/8
Step-by-step explanation:
Solve using Similar triangles again
ratio of 4:7.5
3/x=4/7.5 cross multiply
22.5=4x
x=22.5/4=5.625=5-5/8=45/8
The square root 5 is irrational because a square root of a positive number is either an integer or irrational number. Therefore it is irrational.
It's the graphs that don't touch the x-axis have complex roots. Roots are the points where the parabola touches the x-axis. A,C and E all cross/touch the x-axis so they have real roots.
non-real or complex root parabolas are: B, D, F
