The slope-intercept equation is y=mx+b.
The slope formula is 
Our three points are (5,5), (-5,-7) and (0,-1)
Using our slope formula our slope becomes 
Then, if we use one of our points (pick whichever you want, although (0,1) is the easiest) to solve the equation. So,
. When we solve for x and y, we get -1=0+b, or b=-1.
When we plug that back into the equation, we get
.
Answer:
59°, 71°
Step-by-step explanation:
This is a "sum and difference" problem. All problems of this type have the same answer: the larger of the two numbers is the average of those given.
Then the larger angle is (130 +12)°/2 = 71°. The smaller is 71° -12° = 59°.
_____
<em>More detailed solution</em>
There are several ways to get there using equations. You can, for example, let L represent the larger number. Then L - D will be the smaller one (where D represent the difference). The sum of the two numbers (S) is ...
L + (L -D) = S
2L = S + D . . . . collect terms, add D
L = (S+D)/2 . . . the larger number is the average of the sum and difference
The answer of the First one is 76
Using it's concept, the approximate perimeter of pentagon ABCDE is given as follows:
34.4 units.
<h3>What is the perimeter of a figure?</h3>
The perimeter of a figure is given by the sum of the lengths of it's outside dimensions.
In this problem, the vertices are in a coordinate-plane, hence the distances are found using the formula for the distance between two points.
<h3>What is the distance between two points?</h3>
Suppose that we have two points,
and
. The distance between them is given by:

The length of segment AB is:

The length of segment BC is:

The length of segment CD is:

The length of segment DE is:

The length of segment EA is:

Hence the perimeter is:
P = AB + BC + CD + DE + EA = 9.2 + 5 + 6 + 5 + 9.2 = 34.4 units.
More can be learned about the perimeter of a figure at brainly.com/question/18610622
#SPJ1
Divide her distance over the time it took to determine the speed.
8.75miles/2.5Hours=3.5MPH