You can use prime factorization to find the GCF of a set of numbers. This often works better for large numbers, where generating lists of all factors can be time-consuming.
Here’s how to find the GCF of a set of numbers using prime factorization:
* List the prime factors of each number.
* Circle every common prime factor — that is, every prime factor that’s a factor of every number in the set.
* Multiply all the circled numbers.
The result is the GCF.
For example, suppose you want to find the GCF of 28, 42, and 70. Step 1 says to list the prime factors of each number. Step 2 says to circle every prime factor that’s common to all three numbers (as shown in the following figure).
As you can see, the numbers 2 and 7 are common factors of all three numbers. Multiply these circled numbers together:
2 · 7 = 14
Thus, the GCF of 28, 42, and 70 is 14.
So you can use
$21.95 + $.19x = $18.95 + $.21x
Answer:
Step-by-step explanation:
Isn’t this mathematics not science
225 divided by 9 to figure out the number of crates needed.
225/9=25
So 25 crates are needed to load all boxes on the truck.
Answer:
<u>B. (3,25)</u>
Step-by-step explanation:
x = level of the video game
y = number of points
At level 1, a player has 5 points.
At level 2, the player has 5 + 10 = 15 points
Therefore, we can use the function notation this way:
f(x) = 5x + 10
<u>The only ordered pair given that is from this function is:</u>
<u>B. (3,25)</u>
<u>f(3) = 5 * 3 + 10 </u>
<u>f(3) = 15 + 10 = 25</u>
The remaining three don't represent this function.