**Answer:**

17.5m

**Step-by-step explanation:**

958.2 minus 23.9= 934.3

934.3 minus 951.8= - 17.5

the negative doesnt matter so you can take that away so the answer is 17.5

**Answer:**

mean and range

arrangement before: 24,25,25,26,27

arrangement after: 24,25,25,25,26,27,28

mean before: (27+25+24+26+25)/5 = 25.4

mean after: (27+25+24+26+25+25+28))/5 = 25.7

median before: 25

median after: 25

mode before: 25

mode after: 25

range before: 24 to 27

range after: 24 to 28

hence, the mean and range were affected while the median and mode remained unchanged.

**Answer: **<u>** y = -(1/2)x - 1**</u>

**Step-by-step explanation:**

<u>**y=2x+3**</u>

<u></u>

This is written in the format of y = mx + b, where m is the slope and b the y-intercept. The slope of this reference line is 2. Perpendicular lines will have a slope that is the negative inverse of the slope of the reference line. That means out new line will have a slope of -(1/2):

y = -(1/2)x + b

We can find b by entering the x and y for the given point (-4,1) and solve for b:

y = -(1/2)x + b

1 = -(1/2)(-4) + b

1 = 2 + b

b = -1

y = -(1/2)x - 1

This equation is perpendicular to y=2x+3 and goes through point (-4,1). See attachment.

Answer: 12, 14, 15,

Step-by-step explanation: Took quiz

Cut the figure into 3 parts

area of rectangle is length x width

3x2=6

12x7=84

add them together

6+6+84=96