Answer:
radius = 11
Step-by-step explanation:
The equation of a circle centred at the origin is
x² + y² = r² ( where r is the radius )
x² + y² = 121 ← is the equation of a circle centred at the origin
with r² = 121 , then
r =
= 11
Answer:
10.6 inches squared
Step-by-step explanation:
P = 2(L + W)
P = 2( 1.4 + 3.9)
P = 2 x 5.3
P = 10.6 inches squared
Answer:
The equation of the line that is parallel to given line and passes through the point (-8, -3) is: 
Step-by-step explanation:
Given equation of line is:

The general form of equation of line in slope-intercept form is written as:

Here m(co-efficient of x) is the slope of the line and b is the y-intercept.
Comparing the given equation with the general form we get
m = 5
Two parallel lines have same slope so the slope of any line parallel to given line will also be 5.
Let m1 be the slope of required line parallel to y=5x-3
Then m1=5
Putting in general form


To find the value of b(y-intercept) the given point has to be put in the equation from which the line passes.
The point is (-8,-3)

Putting the value of b and m1, we get

Hence,
The equation of the line that is parallel to given line and passes through the point (-8, -3) is: 
Answer:
15.
Step-by-step explanation:
The new average will be 11 + 4 = 15.
Answer:
An independent variable is changed or controlled in an experiment, while a dependent variable is being tested and measured.
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