Answer:
the first one
Step-by-step explanation:
y-y1=m(x-x1)
y-20=12(x-3)
simplify:
The plane has searched 12,950 hectares. the ratio between hectares to square miles is: 1 hectare is 2.471 acres
Answer:
The 'n = 1' below sigma represents the <em>lower </em><em>bound</em><em>.</em> meaning the number from which you start adding.
'25' above sigma is the <em>upper </em><em>bound</em><em>.</em>
In general it means adding 42 from 1 to 25 times.
so 42(25).
Answer:
option C
Step-by-step explanation:
given,
Beginning inventory 10 units @ $10 per unit
First purchase 35 units @ $11 per unit
Second purchase 40 units @ $12 per unit
Third purchase 15 units @ $13 per unit
first sale = 20 units
second sale = 35 units
now,
unit left after first sale = 35 - 20 = 15 units @ $11 per unit
unit left after second sale = 40 - 35 = 5 @ $12 per unit
third purchase = 15 units @ $13 per unit
inventory = 10 units @ $10 per unit + 15 units @ $11 per unit + 5 @ $12 per unit + 15 units @ $13 per unit
= 100 + 165 + 60 + 195
= $ 520
hence, the correct answer is option C
Answer:
48
Step-by-step explanation:
let s be the snowman, g be the girl, and t be the christmas tree
2s+g=24
2t+2ts=132
3t+2g=26
subtract 2 times the first equation from the third one to get
3t-4s=-22
from the second equation we can deduce
2t(1+s)=132
t(1+s)=66
t=66/(1+s)
Substitute:
3(66)/(1+s)-4s=-22
3(66)/(1+s)=4s-22
3(66)=(4s-22)(1+s)
3(66)=-18s+4s^2-22
4s^2-18s-220=0
using the quadratic formula, we get s = 10, s = -5.5.
2(10)+g=24
g=4
2t(1+10)=132
2t=12
t=6
So 2s+t*g= 20+6*4=48
you would get a different solution for the negative s, but since snowmen cannot be negative, 48 is the answe.r
