Answer:lol so true
Step-by-step explanation:
Answer:
The only option 2 which gives the same values for m=1 and m=4 in both the expressions. ∴ Option 2 is correct.
Variables: x, y, z (we should multiply them and put them together )
Then coeffitions, we should multiply them
Now put coeffitions before variables:
Answer:
$1798
Step-by-step explanation:
You take the money of 1550 and multiply the 16% for the 2 years, which is just 1.16 and you get 1798
Answer: it will take them 2 hours to now 7 lawns
Step-by-step explanation:
It takes Hank 40 minutes (2/3 hours) to mow a lawn. This means that his unit rate of working is 1/40
Penny can mow the same size lawn in 30 minutes (1/2 hour). This means that his unit rate of working is 1/30
If they form a small lawn care company, they will be working together and simultaneously at a faster combined rate. Since their rates are additive.
If they finish one lawn in t hours, working together, then their combined working rate for one lawn is 1/t. Therefore
1/40 + 1/30 = 1/t
1/t = 7/120
t = 120/7 = 17.14
They will now one lawn in 17.14 minutes
For 7 lawns, it will take them 17.14 × 7 = 119.98 minutes. It is approximately 120 minutes.
We will convert from minutes to hour.
60 minutes = 1 hour
120 minutes = 120/60 = 2 hours