A median intersects at the midpoint of the opposite length. The midpoint is:
x,m = (4+-2)/2 = 1
y,m = (-1+7)/2 = 3
The midpoint is at (1,3). With this point and point R(9,9), the equation would be:
y = mx + b, where
m = (9 - 3)/(9 - 1) = 0.75
b is the y-intercept
Substituting any point,
3 = 0.75(1)+b
b = 2.25
Thus, the equation for the median is:
y = 0.75x + 2.25
Answer:
Hair Length – 14 = 1/2 (Months – 3)
Step-by-step explanation:
The perimeter of a shape is the sum of its side lengths.
<em>Joshua miscalculated the third length of the triangle</em>
First, we calculate the third length (x) of the triangle.
Because the triangle is right-angled, we can make use of Pythagoras.
So we have:
![x^2 = 7^2 + 7^2](https://tex.z-dn.net/?f=x%5E2%20%3D%207%5E2%20%2B%207%5E2)
![x^2 = 2(7^2)](https://tex.z-dn.net/?f=x%5E2%20%3D%202%287%5E2%29)
Take square roots of both sides
![x = \sqrt{2(7^2)](https://tex.z-dn.net/?f=x%20%3D%20%5Csqrt%7B2%287%5E2%29)
![x = 7\sqrt{2](https://tex.z-dn.net/?f=x%20%3D%207%5Csqrt%7B2)
The other shape in the figure is a square.
So, the perimeter (P) is
---- i.e. the sum of the visible lengths
So, we have:
![P = 7 + 7\sqrt2 + 7\sqrt2 + 7\sqrt2+ 7](https://tex.z-dn.net/?f=P%20%3D%207%20%2B%207%5Csqrt2%20%2B%207%5Csqrt2%20%2B%207%5Csqrt2%2B%207)
Evaluate like terms:
![P = 14 + 21\sqrt2](https://tex.z-dn.net/?f=P%20%3D%2014%20%2B%2021%5Csqrt2)
Hence, Joshua's error is that:
<em>He miscalculated the third length of the triangle</em>
Read more about perimeters at:
brainly.com/question/6465134
Answer:
Maybe 12.56
Step-by-step explanation:
Well, the question is a bit hard to read, but I assume the radius is equal to 2?
The formula for the area of a circle is п*r*r
The number п is equal to 3.14
so п*2*2 = 3.14*4 = 12.56
Though if the radius is not 2, try to use that formula and if you cant get it please let me know in the comments
U should add all the #s together so... it = 11.3
then divide by the # of terms. so...... 11.3/ 14= 0.9357 (rounded makes 0.94)
So .... B