Answer:
Step-by-step explanation:
n + (n+1) = 123
2n+1 = 123
n = 61
Answer:
a = (d -c)/b
Step-by-step explanation:
Undo the addition of c, by subtracting c.
ab +c -c = d -c
ab = d - c
Undo the multiplication by b, by dividing by b.
ab/b = (d -c)/b
a = (d -c)/b
Answer:
301.44
Step-by-step explanation:
Equation for the volume of a cone: V = π
Here, r = 6 and h = 8.
V = π
V = 3.14 * 
* 
V = 3.14 * 36 *
V = 301.44
Or, in exact terms of π, 96π.
Answer:
Yes
Step-by-step explanation:
First, we need to find how many cars out of the entire fleet fail the test
4/32 = x/150
Cross multiply to find x
32x = 150(4)
32x = 600
32x/32 = 600/32
x = 18.75
I'll round it to 19. So 19 out of 150 cars fail the test. Find the percentage of this and compare it to the 30% estimate
19 /150 = 0.127
0.127(100) = 12.7%
12.7% is obviously lower than 30% so yes it is strong evidence the percentage of the fleet out of compliance is different from their initial thought
Step-by-step explanation:
d is correct answer as i think.
