Answer:
D
(Please vote me Brainliest if this helped!)
Step-by-step explanation:
The angle shown is a right angle. Right angles have a total of 90°.
Therefore, I simply multiplied each answer by 4 because 4(x) = (answer).
A. 4 (14) = 56 + 42 = 98° ≠ 90° INCORRECT
C. 4 (10) = 40 + 42 = 82° ≠ 90° INCORRECT
B. 4 (16) = 64 + 42 = 106° ≠ 90° INCORRECT
D. 4 (12) = 48 + 42 = 90° = 90° CORRECT
An easier way to solve this problem is by simply just subtracting and dividing:
90 - 42 = 48
48 ÷ 4 = 12
You can easily do this yourself. It takes more effort to create the question. Just multiply 22.854 by 5 then divide by 4 = 28.5675.
Answer:
John is 20 years old.
Step-by-step explanation:
Given the second mean is 18, it is equal to the first mean age plus John's unknown age. The sum is also divided by 2 because there are 2 values in the sum (1. John's age and 2. the mean, 16 yrs old).
Set up an equation: ![\frac{x+16}{2}=18](https://tex.z-dn.net/?f=%5Cfrac%7Bx%2B16%7D%7B2%7D%3D18)
multiply both sides by 2: ![x+16=36](https://tex.z-dn.net/?f=x%2B16%3D36)
simplify: ![x=20](https://tex.z-dn.net/?f=x%3D20)
2x+5= -7
2 x -6 +5 = -7
-12 + 5=-7
-7 = -7
x=-6
Answer: Less than
Step-by-step explanation: A variables value is always 1.