Answer:
8 nickels and 9 dimes
Step-by-step explanation:
If all were dimes, the value would be $1.70. It is $0.40 less than that. Changing a dime for a nickel reduces the value by $0.05, so there must have been $0.40/$0.05 = 8 such changes.
There are 8 nickels and 9 dimes.
_____
<em>Check</em>
8 · 0.05 + 9 · 0.10 = 0.40 + 0.90 = 1.30 . . . the answer checks OK
2n+4 ... you divide both top numbers (numerator) by the bottom number (<span>denominator</span>)
6/3=2
12/3=4
Answer:
Total cost= 99 + 2.97x
Step-by-step explanation:
Giving the following information:
Fixed cost= $99
Variable cost= 3% per person
<u>First, we need to calculate the 3% of 99:</u>
Unitary variable cost= 99*0.03= $2.97
<u>Now, we establish the total cost structure:</u>
Total cost= 99 + 2.97x
x= number of people in attendance
<u>Finally, suppose 200 people attend the party:</u>
Total cost= 99 + 2.97*200
Total cost= $693
We know that this True or False question look like flip a coin.
P( guessing correct) first time:
1/2
P( guessing correct) second time:
1/2
P(guessing correct) third time:
1/2
P(guessing correct) fourth time:
1/2
Multiply all of them together to get
1/16. As a result, D is the correct answer. Hope it help!
