Answer:
Surface area of square pyramid shown in picture:
A = area of 4 triangles + area of square
= 4 x 4 x 3 x (1/2) + 3 x 3
= 33 (ft)
=> Option 4 (last one) is correct
Hope this helps!
:)
1. ab= 6 x 3 = 18 1) = 18
2. c + 4 = 2 + 4 = 6 2) = 6
3. a/b = 6/3 = 2 3) = 2
4. a - b - 6 - 3 = 3 4) = 3
5. 2c = 2(2) = 4 5) = 4
6. b/3 = 3/3 = 1 6) = 1
7. a - 1 = 6 - 1 = 5 7) = 5
8. 6 + c= 6 + 2 = 8 8) = 8
a= initial value, 25000. b = rate of decay, (1-.04) or (.96)
a represents the initial value in exponential functions and b represents the rate of growth or decay. for decay subtract the 4% from 1 or 1-.04.
Answer:
It would take them 7.4682 minutes to wax the floor together.
Step-by-step explanation:
First, we need to find out the minute rate for each of them.
If Lea can wax a floor in 14 minutes, then he waxes 1/14 of the floor per minute.
If Mark can wax the same floor in 16 minutes, then he waxes 1/16 of the floor per minute.
Working together, they would wax 1/14 + 1/16 of the floor per minute.
1/14 + 1/16 = .0714 + .0625 = .1339 of the floor per minute
Now we can use a rule of three
1 minute -------.1339
x minutes ------1
Then,
x = 1 / 0.1339 = 7.4682
Therefore, it would take them 7.4682 minutes to wax the floor together.
