Answer:
Square root of 15^2-9^2=12
square root 13^2-12^=5
hence cosθ = 5/13 not 13/5.
4/7 make into slope form which will get you that
Answer:
The larger picture costs 4 dollars and 17 cents
Answer:
after 2 months the total cost will be the same.
Step-by-step explanation:
21+20x=27+17x subtract 17x on both sides because its the lowest coefficient
20x- 17x = 3x 17x-17x= cancel out
subtract 21 on both sides because its the lowest number
21-21= cancel out. 27-21=6
divide the coefficient by both sides
3x/3= x
6/3= 2
x=2
Subtract x^10 from both sides. add 17 to both sides. divide both sides by 7.3 take root and the answer should be x=1.08821, -1.08821