Answer: 7 years
Step-by-step explanation:
let x be the age of Mary
so John's age will be 2x
the equation becomes
2x+x=21
3x=21
x=21/3
x=7
Answer:
Slope is not defined.
Step-by-step explanation:
If and are two points on a line then the slope of the line is given by
Now find the slope of the side of a square such that two adjacent vertices of a square are A(2, 3) and B(2, 8).
Take
Slope of the line
Here, is not defined.
So, slope is not defined.
Answer:
The correct option is
x equals the square root of w times the sum of w plus z end quantity
Step-by-step explanation:
The parameters given are
ABC = Right triangle, with ∠B = 90° and CA = Hypotenuse = CD + DA
∴ CA = w + z
BA = v
Hence;
x² = (w + z)² - v²
Where:
v² = z² + y²
∴ x² = (w + z)² - (z² + y²)
x² = w² + 2·w·z + z² - z² - y²
x² = w² + 2·w·z - y²
Where:
y² = x² - w²
We have;
x² = w² + 2·w·z - (x² - w²)
x² = w² + 2·w·z - x² + w²
Which gives;
2·x² = 2·w² + 2·w·z
Removing the common factors, we have;
x² = w² + w·z
The correct option is x equals the square root of w times the sum of w plus z end quantity.
Answer:
7= 137
6= 43
8=43
Step-by-step explanation:
well 7 would be the same angle as 137
and 6 and 8 are the same angle
so u already know that
7= 137
now to find 6 0r 8 u just need to subtract 137 from 180 to get
6= 43
8= 43