Answer:
260
Step-by-step explanation:
There are a few ways to solve this, but an easy to understand one is that 39=15%, therefore 13=5%, as it is taking 1/3 of each number. Then to get to 100% we would need to multiply 13=5% by 20 to get 260=100%
That answer I C. I hope this helps!!!!
Answer:
slope is 5 y intercept is -6
Step-by-step explanation:
Answer:
10
Step-by-step explanation:
The number of tiles in the design is 1 + 2 + 3 + ...
We can model this as an arithmetic series, where the first term is 1 and the common difference is 1. The sum of the first n terms of an arithmetic series is:
S = n/2 (2a₁ + d (n − 1))
Given that a₁ = 1 and d = 1:
S = n/2 (2(1) + n − 1)
S = n/2 (n + 1)
Since S ≤ 60:
n/2 (n + 1) ≤ 60
n (n + 1) ≤ 120
n must be an integer, so from trial and error:
n ≤ 10
Mr. Tong should use 10 tiles in the final row to use the most tiles possible.
1. 4-4= 0
2. (-4)4= -16
3. -4-4= -8
