Keisha drove 819 miles in 13 hours.
1 answer:
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Answer:
1 stack of 60
2 stacks of 30
3 stacks of 20
4 stacks of 15
5 stacks of 12
6 stacks of 10
60 stacks of 1
30 stacks of 2
20 stacks of 3
15 stacks of 4
12 stacks of 5
Prime Factorisation
Step-by-step explanation:
To find the number of stacks you can make just divide the total by the size of the stacks. This also works in reverse.
To find the prime factorisation you just find the factors of the number by dividing it by the largest prime possible.
Answer:
Step-by-step explanation:
Foil the equation!
1. You see that is to the second power so it means this
2. Then you use the Foil method. First, Outside, Inside, and Last.
3. Combined like terms
4. Answer!
A tip you can use to avoid Foil is this mental math trick: (Keep in mind this only works if the polynomial is being squared.)
1. Multiply the first number by itself =
2. Add the first number by itself =
3. Multiply the last number by itself =
4. Combined to form your answer =
NOTE: This is the same thing as a foil but it uses mental math so it takes less time!