Answer:
12n+9=93
solve for n
12n=93-9
n=84/12
n=7
therefore, Mr. copper bought 7 tickets.
Answer:
The Martian satellite Phobos travels in an approximately circular orbit of radius 9.4x10^6m with a period of 7 h39 min. Calculate the mass of Mars from this information.
First you have to multiply the numbers out of the paranthesis, with the numbers in it:
then solve :
Answer:
x = 19
Step-by-step explanation:
All triangle angles equal 180
3x + 9 + 2x + 4x = 180
9x + 9 = 180
9x = 171
x = 19
