Answer:
Yes, they are equalent
Step-by-step explanation:
12:14 = 6:7
60:70 =6:7
both can be simplified to 6:7
Answer:
20 minutes
Step-by-step explanation:
The mean, or average of a data set can be found by adding all the values together, and dividing by the number of values.
The data set is: 20 minutes, 22 minutes and 18 minutes
1. Add the values together
Add all the numbers in the set together.
Data set: 20, 22, 18
Add them: 20+22+18
60
2. Divide by the number of values
Count how many numbers are in the set.
In this set, there are 3 numbers.
Divide 60 by 3
60/3 =20
20 minutes
His mean time is 20 minutes.
Answer: X=12
Explanation: 180-72= 108. 108 divided by 9 is 12
We need to remember that cos y = sin (90-y)
So , the angles that has congruent values for sin x and cos y is : C. 40° and 50°
cos 40 = sin (90 - 50)
cos 40 = sin 40
hope this helps
