The pyramid is not a example of a space figure for this question
Answer:
a = 19
Step-by-step explanation:
-2(a + 3) = -4a + 32
-2a - 6 = -4a +32
<u> +2a +2a </u>
-6 = -2a + 32
<u>-32 -32</u>
-38 = -2a
divide by -2
<u><em>a = 19</em></u>
19:15 will be the new time
Answer:
The prizes can be awarded in 35904 ways.
Step-by-step explanation:
The order is important.
For example, John winning prize A, Laura prize B and Jonathan prize C is a different outcome than Laura winning prize A, John winning prize B and Jonathan winning prize C.
So we use the permutations formula to solve this problem:
Permutations formula:
The number of possible permutations of x elements from a set of n elements is given by the following formula:

In how many ways can the prizes be awarded?
Three prizes divided among 34 contestants. So

The prizes can be awarded in 35904 ways.
A 2500-1500=1000
1000/2500 = .4 or 2.5
{4/10 is the same as .4. If you simplify the fraction of 4/10, you get 2/5}