Answer: 
Step-by-step explanation:
For this exercise you need to remember the following Trigonometric Identity:
You must observe the figure given in the exercise.
You can notice that the given triangle EFG is a Right triangle (Right triangles are defined as those triangles that have an angle that measures 90 degrees).
So, you can identify in the figure that:
So, knowing these values, you can substitute them into and then you must evaluate (Remember to round the result to the nearest hundreth).
Therefore, through this procedure you get:
Answer: 4
Step-by-step explanation:
#1: 12 pennies
#2: 2 pennies and 2 nickels
#3: 2 pennies and 1 dime
#4: 7 pennies and 1 nickel
a < -4 or a > 7
solve the first inequality, then the second one
-12+17=5 so the temperature at 5pm would be 5 degrees
Answer:
50kg
Step-by-step explanation:
25 kg of a 15% salt solution
25kg * 15%
25kg * 15/100 = 3.75 kg
3.75kg * 100/5
3.75 * 20 = 75
Mass of water in kg increased from 25kg to 75kg
75kg - 25kg = 50kg of water must be added.
