Answer:
a²+b²=c²
7.5²+9²=c²
137.25=c²
√137.25=c²
11.72.... = c
The Radius of the circle is approximately 11.72cm
Step-by-step explanation:
Using this data. Create a Triangle with the Chord and Center of the dot. We know the distance between the chord and center which is one length of one of the sides.
We split the chord from the intersecting line from the center to the chord making the second line being 7.5cm
After We draw a line from the center of the circle to where the chord meets to the edge of the circle to create the triangle
We now have 2 measurements and can use Pythagorean Theorem to determine the radius from the missing length of the triangle.
The relationship between the points is an illustration of similar shapes.
The length of AB is 0.43
The given parameters are:



From the question (see attachment), we have the following observations:
- BE corresponds to CD
- AB corresponds to AC
So, the equivalent ratio is:

Substitute known values

Express as fractions

Multiply both sides by 1.8

<em>AC = AB + BC</em>
So, we have:

Substitute 1.7 for BC

Multiply through by 5

Collect like terms


Divide both sides by 4

Approximate

Hence, the length of AB is 0.43
Read more about similar shapes at:
brainly.com/question/20536565
Answer:

Step-by-step explanation:
Let's write the equation of the line in the slope-intercept form. That is, y= mx +c, where m is the slope and c is the y-intercept.
Identify 2 coordinates on the line to calculate the slope.
The 2 points are (1, 2) and (4, 4).
Slope

= 
= 
Substitute the value of the slope into m:

Substitute any point into the equation to find c:
When x= 1, y= 2,

Solve for c:

c= 
Thus, the equation that represents the line is
.
Additional:
Should you wish to learn more about slope-intercept form, do check out the following!
Answer: 381704, because math