Answer:
18. Its 2 meters.
19. Its 0.2 grams
20. Its 1,920
Step-by-step explanation:
When you convert 200 centimeters to meters its 2.
When you convert 2,000 milligrams in grams its 0.2
15% of 12, 800 is 1,920
Hope this helps:)
Answer:
Step-by-step explanation:
Form a set of values we get
n = 17
And with the help of a calculator
μ₀ = 438,47
σ = 14,79
Normal Distribution is : N ( 438,47 ; 14,79 )
c)
CI = 95 % means α = 5 % α/2 = 2,5 % α/2 = 0,025
and as n < 30 we should use t-student distribution with n -1 degree of freedom df = 16. t score for 0,025 and 16 s from t-table 2,120
By definition:
CI = [ μ₀ ± t α/2 ; n-1 * σ/√n ]
CI = [ μ₀ ± 2,120* 14,79/√17 ]
CI = [ μ₀ ± 7,60 ]
CI = [ 438,47 ± 7,60 ]
CI = [ 430,87 ; 446,07 ]
Answer:
See below.
Step-by-step explanation:
a) y = 2x + 3 and y = -2x + 11
One solution. They are straight lines with different slopes, so they will intersect at some point.
b) y = x + 2 and -2x + 2y = 4
-2x + 2y = 4 can be rearranged to 2y = 2x +4 and then y = x + 4
Both lines have the same slope, 1. They are parallel and will never meet. No solutions.
c) y = x - 3 and y = x + 6
This has the same answer as c. Parallel lines (both have slopes of 1.). They will never meet: no solutions.
d) y = 7 and y =3x-5
One solution. Straight lines with different slopes (3 and 0) so they will cross at one point. [At (4,7)]
e) y = -4x and y = -4x - 1
Same slopes. There are no solutions.