Answer:
68%
Step-by-step explanation:
Given that:
Mean speed (m) = 46
Standard deviation (s) = 13
Approximately what percentage of vehicle speeds were between 33 and 59 mph
Obtain the Zscore for P(Z < x) for both values and subtract :
For x = 33
Zscore :
Z = (x - m) / s
Z = (33 - 46) / 13 = - 1
p(Z < - 1) = 0.15866 ( Z probability calculator)
For x = 59
Zscore :
Z = (x - m) / s
Z = (59 - 46) / 13 = 1
p(Z < 1) = 0.84134 ( Z probability calculator)
Hence, 0.84134 - 0.15866 = 0.68268 = 0.68
0.68 * 100% = 68%
Answer:
y = 18·8^x
Step-by-step explanation:
We assume you want a model that looks like y = ab^x.
To find the values of "a" and "b", you can fill in the given numbers and solve the system of equations:
18 = a·b^0
9216 = a·b^3
The first equation tells you ...
18 = a
Dividing the second equation by the first gives ...
9216/18 = (a·b^3)/(a·b^0) = b^3
512^(1/3) = b = 8
The exponential function is ...
y = 18·8^x
Answer: Becky used 1/2 yards of ribbon
Step-by-step explanation:
1/3=2/6
so 2/6 + 1/6 = 3/6 then simplify
1/2
6 s - 10 = 2 + 3 s + s
6 s - 10 = 2 + 4 s
6 s - 4 s = 2 + 10
2 s = 12
s = 12 : 2
s = 6
Answer:
The work in his check is all correct, thus s ≠ - 4.
Answer:
Venus
Step-by-step explanation:
To find out which star is higher we first want to look at the slopes. So Venus's slope is 10 and Sirius's slope is 9. So by this only we can determine that Venus is higher in the sky.
