Answer:
x = 55
Step-by-step explanation:
x + (2x+15) = 180
3x + 15 = 180
3x = 165
x = 55
4 yellow + 6 green + 10 purple = 20 total tiles
1st draw P purple: 10 purple/20 total
2nd draw P purple: 9 purple/19 total
Probability purple then purple (no returns):

= 90/380
= 45/190
= 9/38
Answer:
x=-3.5
reason:
first, add 3 to both sides
this makes the equation -1/2x=7
then, divide both sides by -1/2
this will give you x=-3.5
Let there are x glass figurinesin room. as museum decided to showcase in total 9 different room as total number of glass figurines are:

Determine the number of glass figurines in 7 rooms.

The total collections is of 9x glass figurines.
In 7 rooms the collections appear is 7x.
Determine the fraction of collection that will appear in 7 rooms.

So, the answer is 7/9.
Answer:
nth term, 
10th term, 
Step-by-step explanation:
From the question;
- We are given the first term,

- The common ratio, r = 2
We are required to write the formula of getting nth term and find the 10th term of the sequence;
- We need to know that for nth term in a geometric sequence, we use the formula;

Therefore, in this case;
nth term will be given by;
, where n is the term in the sequence;
Therefore;
To get the 10th term of the sequence;



Therefore, the tenth term of the sequence is 512