Answer:
4.5
Step-by-step explanation:
The sum of 3 and 7 is 10
then what number to you multiply 10 by to get 45
45 ÷ 10 = 4.5
so the answer is 4.5
Answer:
C
Step-by-step explanation:
We have the equation:
We can subtract 10 from both sides:
Since this equation isn't factorable, we can use the quadratic formula:
In this case, <em>a</em> = 1, <em>b</em> = -6, and <em>c</em> = -10.
Substitute:
Simplify:
Note that:
Hence:
Therefore, our answer is C.
10-40? Since the marks count as 10
If it took 8 minutes and 36 seconds, 8 x 60 is 480 and 480 + 36 is 516
So the answer is 516 seconds