jxc516

65+115=180

180/15=12

remainder = 0

.-.

circle = 360 deg

since rectangles are perpendicular, we have 360-2(60)=240

240/2=120

oops I made a mistake

Thanks for posting CPhill :D

and he divided by 40 because our conversion factor of feet to inches is 1:12, so we have 10*12=120, 3/120=1/40, so we divide by 40

how to find the variance:  variance is calculated by taking the differences between each number in the data set and the mean, then squaring the differences to make them positive, and finally dividing the sum of the squares by the number of values in the data set.

so we have the mean as (147+141+120+124+128)/5=660/5=132

so we have 132-147=-15, 132-141=-9, 132-120=12, 132-124=8, 132-128=4

(-15)^2=225, (-9)^2=81, 12^2=144, 8^2=64, 4^2=16

so 225+81+144+64+16=530

530/5=106

check this please

40ft/10ft=4

4*3=12

3.5 ft/10=0.35

0.35*3=1.05

6.6ft/10=0.66

0.66*3=1.98

cos^-1(0.3)=72.54239...

90-72.54239=17.5 (rounded)

ok, one thing to know. Putting 'homework' in your title will attract less people, because this is your homework, and its your job to solve it. So if you are asking for help, put what you have tried first

we have a sequence that goes \(5, -8, 11...\), so we have 5 + (-3)*50=-145

please confirm...

area of parrallelogram: b*h

square: a^2

triangle: bh/2

so we have 10*7=70

4^2=16

15*4/2=30

30+16+70=116

we have the hockeystick identity which gives you instantly the answer

we can prove the hockeystick identity by using trianglular numbers

good thing to note: sin(x)=cos(90-x)

we have 10*15=150 yds for an uncut rectangle

we then have (10-4)*6=36 for the cut out rectangle

150-36=114 yds squared