Step 4-5 is where Andrew made an error. Since 9.8 is positive, -11.8 + 9.8 = -2. He subtracted 9.8 from 11.8 instead of adding it.
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Answer:
B. 8 m/s (meters per second)
Step-by-step explanation:
In order to solve this problem, we can make a ratio table. For every 3 seconds, a hummingbird flies 24 meters to get from one feeder to another. This situation can be mathematically written as 3:24. However, we want to get a unit rate that describes how many meters a hummingbird travels in one second. The 3 in 3:24 represents the seconds. To create a unit rate, the 3 must be divided into 1. 3 divided by 3 would be 1. However, what you do to one section you must do to the other. 24 divided by 3 is 8. The hummingbird travels 8 meters per second.
Answer:
(20+2)(20-2) = 20^2 - 2^ = 396
Step-by-step explanation:
Difference of two squares is breaking down numbers into pieces and using the distributive property to solve. The pieces should be in the form (a-b)(c+d).
Write 22 as (20 + 2) and 18 as (20-2).
(20+2)(20-2) = 400 + 40 - 40 - 4 = 400 - 4 = 20^2 - 2^ = 396
$37.52
I know it seems close, but the coupon doesn't do much when you repay a total of 18% before the coupon.
(a) 4/11
0.363636... = 36/99 = 4/11
(b) 11/30