Answer:
Try 6,400
Step-by-step explanation:
Find the volume of one congruent bookshelf then you'd be doing "4 x 10 x 8 x 10" (not another 8 bc they are talking about the length of the same side) you should get the answer 3,200 then multiply by 2 bc they're 2 bookshelves . You should get 6,400 I'm not 100% sure tho
It will be a system of equations.
A=1*w
l=2w
Solve by substitution.
Scalene triangle is a triangle with no congruent sides
isosceles triangle is a triangle with at least 2 congruent sides (i.e. 2 or 3 congruent sides)
equilateral triangle is a triangle with exactly 3 congruent sides.
Graph 15 is an isosceles triangle
Complete question is in comment section :
Answer:
68%
Step-by-step explanation:
Mean = 25
Standard deviation = 5
The percentage of trees between 20 and 30
20 trees = 1 standard deviation below the mean ; mean - 1(standard deviation)
25 - 5 = 20
30 trees = 1 standard deviation above the mean ;
Mean + 1(standard deviation) ;
25 + 5 = 30
This means, 20 and 30 lies ±1 standard deviation from the mean which according to the empirical rule is 68%
According to the empirical rule :
