Lcm and gcf of 8 and 18
2 answers:
Step-by-step explanation: To find the least common multiple or (lcm) of 8 and 18, begin by listing the multiples of each number.
<u>Multiples of 8</u>
1 × 8 = 8
2 × 8 = 16
3 × 8 = 24
4 × 8 = 32
5 × 8 = 40
6 × 8 = 48
7 × 8 = 56
8 × 8 = 64
9 × 8 = 72
Notice that we did not list 0 × 8 in our list of multiples and that's because 0 multiplied by 8 is 0 and 0 cannot be our least common multiple.
Now, let's list the multiples of 18. When listing the multiples of 18, it's a good idea to keep an eye on the list of multiples for 8 so that we will notice when we find a least common multiple.
<u>Multiples of 18</u>
1 × 18 = 18
2 × 18 = 36
3 × 18 = 54
4 × 18 = 72
Now, we can stop here because we found the least common multiple of 8 and 18 which is 72.
Greatest common factor is provided in the image attached.
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Answer:
y=0.2x+29
Step-by-step explanation:
Given that:
y is the total monthly of the A Fee and Fee plan.
x is the number of monthly minutes used.
- If a customer uses 290 minutes, the monthly cost will be $87, we have the pair (290, 87)
- If the customer uses 980 minutes, the monthly cost will be $225, this is the coordinate pair (980, 225).
We want to obtain an equation in the form: y=mx+b
First, let us determine the slope, m
Given points (290, 87) and (980, 225):
<u>Slope</u>
Next, we determine the y-intercept, b.
Substituting the pair (290, 87) and m=0.2 in y=mx+b, we obtain
87=0.2(290)+b
b=87-0.2(290)=29
Therefore, our equation in the form y=mx+b is:
y=0.2x+29