K=1/3
simplify each bracket, put all numbers on the left hand side, equal it to 0 and solve for k
Your parents want to leave a 20 percent tip. The tip is calculated on the total amount of the meal and tax.
1 answer:
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Answer:
x ≈ 3.5 cm
Step-by-step explanation:
Using the sine ratio in the right triangle
sin23° = =
=
( multiply both sides by 9 )
9 × sin23° = x , then
x ≈ 3.5 cm ( to 1 dec. place )