4 + 3x = 12
3x = 12 - 4
3x = 8
x = 8/3
x = 2,6 grams
Answer:
Step-by-step explanation:
Step 1: Know the key information
Catherine= 15 hours
Dan=30 hours
Time to work together = x
Step 2: Put them as fractions
So: Catherine=1/15
Dan=1/30
Time to work together =1/x
Therefore, our equation will be: 1/15+1/30=1/x
Step 3: Our lowest common denominator is 30x
Therefore,
30x/15=2x
30x/30=x
30x/x=30
Step 4: put the x we found into a equation
Our equation would be:
2x+x=30 which makes
3x=30 (divide 30 by 3 as 30 is a multiple of 3)
x=10
Therefore, when working together it would take 10 hours
Answer:
5
Step-by-step explanation:
The first trip on plan 1 is 155.00. The first trip on plan 2 130.00. Add the parking fee on both trips to get 165.00 and 145.00. Keep doing this until you get 205 and 205. The answer is 5 trips.
Answer:
$12,500
Step-by-step explanation:
There are 125 people that bought a season pass so just multiply the number of people by the cost that each pass costs.
Answer:
The sample mean is$ 52
The claimed population mean is $58
Step-by-step explanation:
American households spent an average of about $52 in 2007 on Halloween merchandise such as costumes, decorations and candy. This tells you that the sample mean is$ 52.
1500 households were surveyed in 2008 and found an average spending of $58 0n Halloween tell us that the claim's population mean is $58
