Let's say Mary's brother's age is x and Mary's age is y
(1) x = 3y - 5
(2) x + y = 39
Now if we substitute equation (1) into equation (2) we get:
3y - 5 + y = 39
4y = 44
y = 11
Therefor Mary is 11 years old
Answer:
84 - 38 = 46
Step-by-step explanation:
Simple math just subtract to see how much longer the mail is then the post office.
Answer:
Missing angle = 76 degrees
Informal Argument found below
Step-by-step explanation:
In order to find the missing angle, we would need to add up all of the known angles and subtract them from 180. This is because in every triangle, the angles add up to 180.
Work:
180 = 79 + 25 + x
180 = 104 + x
x = 76
Informal Argument:
The missing angle of the triangle is equal to 76 degrees. This is because all of the angles in a triangle always add up to 180 degrees. When combined with the other two angles, the triangle has a total angle measurement of 180 degrees. Therefore, the missing angle is equal to 76 degrees.
1.) 15 × 2 = 30
2.) 20 × 2 = 40
3.) A number between 30 and 40 or 70
I hope that that was what you were asking.
We will have the following:
*It will have a domain of x equal or greater than 0:
It will have a domain of y equal or greater than 0:
***
We have the following:
We determine the domain as follows:
Since the function is subject to a root, no negative value can be put in it, so its domain (Since x is not accompanied by any value in the root) can only "hold" values equal or greater than 0.
We determine the range as follows:
Since the function is subject to a root, it's solutions will never be negative, so its range can only hold values equal or greater than 0.