Answer:
x=32
Step-by-step explanation:
8(5/8x+4 = 3/8x+12)
5x+32=3x+96
2x+32=96
2x=64
x=32
Answer:
28. W=20ft
29. -340
30. 56, 57, 58
Step-by-step explanation: For 28
1. A = L*W
2. A = 240
3. 240 = 12*W
4. (240/12) = W
5. 20ft = W
Step-by-step explanation: For 29
X +300 = -40
X = -40 - 300
X = -340
Step-by-step explanation: For 30
171/3 = 57, therefore 57 is the average
56, 57, 58
(1/10 (x)) fewer than the sum of 1/5 (y) and 2x so
1/10 (x)=1/10 times x=x/10
1/5 (y)=y/5
-x/10+y/5+2x
simplified it is
19x/10+y/5
Answer:
20 is the Answer i think
Step-by-step explanation:
Answer:
a. an = -1 • 4^(n - 1)
Step-by-step explanation:
It's easy see that each term is multiplied by 4 to get the next term, so the common ratio will be 4, that reduces the choices to answers A and B (since C and D use -1 as common ratio). Also, normally a geometric progression uses "n-1", so we'll first try with A to see if it works.
a1 = (-1) * 4^0 = -1 * 1 = -1
a2 = (-1) * 4^1 = -1 * 4 = -4
a3 = (-1) * 4^2 = -1 * 16 = -16
Yes, it works... so the answer is an = -1 • 4^(n - 1)
