Hi
perimeter of rectangle is : 2 length+2 width .
to progress in math, you must practice.
So , I let you do the first one which is the esaiest.
48 ) V147+ V147 + V108+V108 = 2V147 +2V108 = 2 ( V147+V108)
The average annual rainfall totals for cities in new york is 43 inches
Um the angle is 72. No ladder can make an angle of 72. Anyway trigonometry is the only way to solve this.
The function is sin. Sin(72)= opposite/5(hypotenuse)
5sin(72)=4.76 metres to 2 decimal places
Vector AB can be calculated:
AB = <bx-ax , by-ay>
AB= <-5-4 , 1-3>
AB= <-9 , -2>
AC = -2*AB
AC = -2 *<-9 , -2>
AC = <18 , 4>
Now we can calculate coordinates of point C:
AC = <cx-ax , cy-ay>
<18 , 4> = <cx-4 , cy-3>
18=cx-4
cx=22
4=cy-3
cy=7
Coordinates of the terminal point C (22,7).
