Answer:
a = 0.5454545455
Step-by-step explanation:
Simplifying
3(a + 2) + 4(2a + -3) = 0
Reorder the terms:
3(2 + a) + 4(2a + -3) = 0
(2 * 3 + a * 3) + 4(2a + -3) = 0
(6 + 3a) + 4(2a + -3) = 0
Reorder the terms:
6 + 3a + 4(-3 + 2a) = 0
6 + 3a + (-3 * 4 + 2a * 4) = 0
6 + 3a + (-12 + 8a) = 0
Reorder the terms:
6 + -12 + 3a + 8a = 0
Combine like terms: 6 + -12 = -6
-6 + 3a + 8a = 0
Combine like terms: 3a + 8a = 11a
-6 + 11a = 0
Solving
-6 + 11a = 0
First day
ok so 4 inches up means 4 iches above the bottom, 10% of 4 is 0.4, and 4-0.4=3.6
second day
3.6+4=7.6, now 10% of that is 0.76, 7.6-0.76=6.84
third day
6.84+4=10.84, 10% of 10.84 is 1.084, 10.84-1.084=9.756
fourth day, at begining is at the end of third
worm is 9.756 in above the bottom of hole
20-heightup=height from top
20-9.756=10.224
answer is 10.224 inches from top
Doug didn’t line up the decimals, so his answer would be incorrect. His answer should be 20.45
Answer:
1. 0.30
2. 1.20
3. 7.50
Step-by-step explanation:
1. 0.30
2. 1.20
3. 7.50
1 1/2 pages in 3 minutes times 2=3 in 6 minutes times 2 again = 6 and one tired arm.
