The mean weight of a group of 7 girls is 58kg
work out their total weight with the calculation

Easy.The answer is 406kg.

Step-by-step explanation:

58kg×7=406kg

406kg

Mean = {Sum of Observation} ÷ {Total numbers of Observations}

here : Total numbers of Observations is 7 girls

and mean is 58kg

we can use the formula, 58= sum of observation/7

sum of observation,  total weight = 406kg

area of part 1:

a1=base*height/2=(8+2)*(8-2-2-1)/2=10*3/2=15 ft^2

area of part 2:

a2=length*width=(8+2)*1=10 ft2

area of part 3:

a3=length*width=8*2=16 ft2

total shaded area : a1+a2+a3=41 ft2

total area of the reactangle : a=16*8=128 ft2

total area of the nonshaded region : 128-41=87 ft2

mk./km: lm

step-by-step explanation:

,mlmlm

; mk

lk