Alright for a better explanation go on YouTube.com and search up “complex fratctions and unit rates” but It’s easy you’ll understand
You want to find the LCM of 2 and 15 for this problem.
Multiply them to find the LCM since there are no common factors (besides 1).
Think of everything as numbers first if it is hard for you to comprehend the
word problem. Inez waters them on day 2, day 4, day 6, and so on is the meaning
of “every two days”. On the other hand, she trims them on day 15, day 30, day
45, etc. is the meaning of “every 15 days”. You are now actually finding the
multiples of 15 and 2. The two tasks share a common day which is day 30 is the
meaning of “she did both today”. The question, "When will she do both
again?" is asking how far away the next common day will be which should be
in another 30 days. Therefore, your LCM is 30
Answer:
no. who eat lunch special = 12
no. who eat dessert = 6
Step-by-step explanation:
Let x = no. who eat lunch special
y = no. who eat dessert
(1) 8x + 2y = 108 (2) 6x + 3y = 90
Divide thru by 2 Divide thru by 3
4x + y = 54 2x + y = 30
<u>-2x - y = -30</u>
2x = 24
x = 12 2(12) + y = 30
24 + y = 30
y = 6
Answer:
After 20 months
Step-by-step explanation:
This is a compound growth problem which has the formula:
![F=P(1+r)^t](https://tex.z-dn.net/?f=F%3DP%281%2Br%29%5Et)
Where
F is future value
P is present amount
r is the rate of growth
t is the time (in months)
Future amount is $65, what he needs at-least
P is the initial amount, that is $10
r is the rate of growth, which is 10% or 10/100 = 0.1
t is time in months, what we need to find
Substituting and solving we get:
![F=P(1+r)^t\\65=10(1+0.1)^t\\65=10(1.1)^t\\6.5=1.1^t\\ln(6.5)=ln(1.1^t)\\ln(6.5)=t*ln(1.1)\\t=\frac{ln(6.5)}{ln(1.1)}\\t=19.64](https://tex.z-dn.net/?f=F%3DP%281%2Br%29%5Et%5C%5C65%3D10%281%2B0.1%29%5Et%5C%5C65%3D10%281.1%29%5Et%5C%5C6.5%3D1.1%5Et%5C%5Cln%286.5%29%3Dln%281.1%5Et%29%5C%5Cln%286.5%29%3Dt%2Aln%281.1%29%5C%5Ct%3D%5Cfrac%7Bln%286.5%29%7D%7Bln%281.1%29%7D%5C%5Ct%3D19.64)
<u>He would need 19.64 months to save up at-least 65. So, that means, he would need 20 months</u>
Answer:
x= -14
Step-by-step explanation:
-14 subtracted by 2 is -16, since its absolute it means its positive, meaning its 16 greater than 14, I may be wrong so just to let you know. Depends on how the teacher wants it to be.