Answer:
a = 1
b = -3
c = -2
Step-by-step explanation:
Answer:
I believe the correct options are 1, 4, and 5.
Calcualate 40% (0.40) times 20 to get that there are 8 boys in the class. The rest must be girls, so 20 - 8 gives you 12 girls. 25% (0.25) times the 8 boys gives you that 2 of the boys wear glasses. 50% (0.5) times the 12 girls tives you that 6 girls wear glasses. Add together the 2 boys and the 6 girls that wear glasses to get that a total of 8 students wear glasses.
Then, it would be 156 + 156*6.5 /100 = 156+10.14 = $166.14
Answer:
D. 424 m³
Step-by-step explanation:
Use the formula for the volume of a cylinder
V =
r²h
Plug in the values we know
V = (3.14)(3²)(15)
V = 423.9 m³
This is closest to answer choice D, 424 m³
So, D is correct