Answer:
20
Step-by-step explanation:
start by dividing 18 from 120(to find the amount of 18's in 120)
120 / 18 = 6.<u>6</u>
meaning there are 6.<u>6</u> sets of 18 in 120
multiply 3 by 6.<u>6</u>(since there's 3 miles for every 18 minutes)
3 x 6.<u>6</u> = 20
Ok so we know the total will be 180 degrees. We subtract 44 from 180 which is 136. Then set up an equation
6x + 4 = 136
Subtract 4 from both sides so
6x = 132
Divide both sides by 6
X=12
If you add 140 to 280, it becomes 420. Please provide more information next time you ask a question.
In 30-60-90 triangle there is a rule that leg opposite to 30 degree angle is 2x shorter than hypotenuse. That means that shorter leg is 10 feet long.
longer leg we can calculate using Pythagoras theorem.
20^2 = 10^2 + x^2
x^2 = 300
x = √300 = 10√3