Answer:
18 and 20, 4
Step-by-step explanation:
Math reasoning 1:
Set the first number as x and the other one as x+2 because it is a consecutive even number.
x+x+2=38
2x=36
x=18
18+2=20
The 2 consecutive numbers are 18 and 20
Problem solving 1:
Write out equation first, set the unknown number as x
5+x=9
x=4
Answer:I got 9.85 hope it helps
Answer:
8 feet
Step-by-step explanation:
Ladder = hypotenuse
bottom of ladder to tree = leg
x, 6, 10
Clear 3-4-5 triangle so,
x=8
98-6=92. This represents the amount of space he has to dive.
92/4=23. This represents your equal intervals.
So the answer is that the diver dove in equal intervals of 23 ft.
Answer:
260.1615 ; 70.688 ; (53.787 ; 103.304)
Step-by-step explanation:
Answer:
Step-by-step explanation:
Data:
242.87
260.93
194.19
260.76
355.36
346.32
165.37
250.08
326.76
283.56
212
284.08
139.16
436.72
240.87
310.41
223.73
181.25
238.2
250.61
Using calculator :
Sample mean = ΣX / n
Sample mean = 5203.23 / 20
Sample mean, m = 260.1615
Sample mean, m = 260.2
Sample standard deviation (s) :
Σ(X - m) / n - 1
= 70.688
= 70.7
((n-1)*s²) / ²0. 975, 19 ; ((n-1)*s²) / ²0.025, 19
95% confidence interval :
(53.787 ; 103.304)
