Answer:
77
Step-by-step explanation:
Add the numbers together, then divide them to how much numbers are there.
74 + 75 + 80 + 76 + 75 + 81 + 78 = 539
Since there are 7 numbers, you divide 539 by 7.
539/7 = 77
Answer:
30 miles per minute
Step-by-step explanation:
The ratios 30/1 is equivalent to 15/0.5.
Answer:
$9.06
Step-by-step explanation:
We are told in the question that:
Shannon's aunt gave her a $10 gift card to Toys R Us for her birthday
Sales tax on the gift card = 9.4%
Sales tax = 9.4% × $10
Sales tax = $0.94
The price of the most expensive give Shannon can buy with this gift card is calculated as:
Price of the gift card - Sales tax
$10 - $0.94
=$ 9.06
Answer:
15
Step-by-step explanation:
Let the smallest integer be x. The integers will be x, x+1, x+2, all the way up to x+6.
119 = 7x + (1+2+3+4+5+6)
119 = 7x + 21
7x = 98
x = 14
The second smallest integer will be x+1, so x+1 = 15.
Answer: 233 min
Step-by-step explanation:
This problem can be solved by the following equation:
(1)
Where:
is the quantity left after time
is the initial quantity
is the time elapsed
is the constant of decay for the material
So, firstly we need to find the value of from (1) in order to move to the next part of the problem:
(2)
Applying natural logarithm on both sides of the equation:
(3)
(4)
(5)
(6)
(7) Now that we have the value of we can solve the other part of this problem: Find the time for .
In this case we need to isolate from (1):
(8)
(9)
Finally: