Answer: -0.95
Step-by-step explanation:
The value that explains the least-squares regression line is 90% or 0.9, and is also r^2.
You would just square root r^2 and get r=0.948. since the relationship is negative, r= -0.948, or -0.95
9 dollars a hour why would u ask that question it is so easy literally
Answer:
The distance of the dot above the ground is 28.9 in
Step-by-step explanation:
see the attached figure with letters to better understand the problem
we know that
The triangle ABC is an isosceles triangle
CA=CB=15 in ------> is the radius of the circle
∠ACD+112°=180° ---> because the diameter divide the circle into two equal parts
∠ACD=180° -112°=68°
In the right triangle ACD
Find AD we have sin(68°)=AD/AC AD=AC*sin(68°) substitute the value AD=15*sin(68°)=13.9 in
Find the distance AB
AB=2*AD AB=2*13.9=27.8 in
The diameter is equal to
2*15=30 in
The distance of the dot above the ground is equal to
AB+(30-27.8)/2
27.8+1.1=28.9 in
Answer:3009/4
Step-by-step explanation:
Or 752.75
Answer:
(-5, 3)
Step-by-step explanation:
Let O(x, y) be the centroid of the triangle.
The median of a triangle is a line segment that joins the vertex of a triangle to the midpoint of the opposite side. There are three medians in a triangle; and the medians of a triangle intersect at a point called the centroid.
The centroid of a triangle is gotten from the average of the x coordinates and the y coordinates of all the three vertices.
For Triangle ABC has vertices A (3,-3) B (-7,9) C (-11,3) and centroid O(x, y). Hence:
The centroid is at (-5, 3)