7 and 19 are both prime numbers.
Factors of 7
1 * 7 = 7
7 * 1 = 7
factors are 1 and 7
Factors of 19
1 * 19 = 19
19 * 1 = 19
factors are 1 and 19
GCF = greater common factor
So GCF is 1 because there is no greater common number in the 7 and 19
9. 2,000
10. 3,200
11. 3,000
12. 1,800
13. 120
14. 125
15. 75
16. 30
17.
18.
I can't see the last two
Answer:
1 month
Step-by-step explanation:
249 is the amount she spends for buying the kitten, (299-50=249) which she only has to pay once.
20 is the amount she has to spend every month, the rate of change.
The problem can be modeled with the general equation:
y = 20x + 249
In this equation, x the the time in months and y is the amount of money spent.
Substitute 250 for y.
y = 20x + 249
250 = 20x + 249 <= isolate x to get the number of months
1 = 20x
x = 1/20
Carol will only spent money every month, not for 1/20 of a month.
It will only take Carol 1 month to spent $250.
Check answer:
Substitute x for 1
y = 20x + 249
y = 20(1) + 249
y = 269
269 is more than 250 already.
Answer:
7
Step-by-step explanation:
12 x 12 = 144
144 divided by 20 = 7.2 but round it and get 7
--------------
(<em><u>not 100% sure it's correct)</u></em>
