PQ // BC
then
Angle P = Angle B, A is common angle the two triangles are similar
AP/AB = AQ/AC
8/18 = 12/ AC
AC = 12 * 18/8 = 27 (your ans: D)
AQ + QC = AC
QC = AC - AQ = 27 - 12 = 15 (if it was required)
tan60 = y/8
y = s tan60 = 8sqrt(3) (B)
Next time, post each question separately.
Mean is calculated by adding all numbers and dividing by how many there are. I have set up an equation to find x from the given mean.
To cancel out the denominator, multiply both sides by 4.
When that is done, you are left with:
Combine like terms:
Add 5 to both sides, cancelling out the -5 on the left.
Your answer is 51.
If you want to check your work, plug in 51 for x.
If it is divisible by 3 and 7 then it is divisible by (3 times 7)
3 time s7=21
just do muliplyes of 21 and find which are between 364 and 384
21
42
63
...
336
357
378
399
answer is 378
Answer: gold fish
Step-by-step explanation:
<span>No simple interest, only compound interest.</span>