Answer:
390 ft^2
Step-by-step explanation:
We will break this shape into two rectangles, one that is 7 ft wide by 30 ft long
and the other that is 25ft-7ft wide by 30ft -20 ft long (18 ft by 10 ft)
1st: 7 ft by 30 ft
A = l*w = 7*30 = 210 ft^2
2nd: 18 ft by 10 ft
A = l*w = 18 * 10 = 180 ft^2
Add the areas together
210+180 = 390 ft^2
Answer is 9.5- explanation- if u substitute 9.5 in the equation 2(5 x 9.5+ 5 = so multiply 9.5 times 5 which equals 47.5 then multiply by the 2 which equals 95 plus the 2+3=5 - 95+5 equals 100 (sorry I’m bad at explaining)
Answer:
a
Step-by-step explanation:
As x → + ∞, y → + ∞, as x → - ∞, y → + ∞
This means as x goes to the right, y increases upwards (+ ∞) and as x increases to the left , y increases upwards (+ ∞ )
Answer:
Approximately 76.5 mg.
Step-by-step explanation:
Given,
The initial quantity of the Bismuth-210, P = 233 mg,
Also, the rate of decay per day, r = 13 %
Thus, the quantity of the Bismuth-210 after 8 days would be,
Two equations
W*L=1260
3W+48=L
Solve
L=1260/W
3W+48=1260/W
3W^2+48W=1260
3W^2+48W-1260=0
Divide by 3
W^2+16W-420=0
Factor
(W-14) (W+30)
W=14
L=90
