Answer:
19.1
Step-by-step explanation:
i took the testttttt
Answer:
Test statistic (t) = 0.625
Step-by-step explanation:
<u><em>Step(i):-</em></u>
mean of the Population(μ) = 10.4 hours
Sample mean (x⁻) = 10.7 hours
Standard deviation of the sample( S) = 1.44
The level of significance (α= 0.1
Sample size 'n' = 9
Degrees of freedom = n-1 = 9-1 =8
<u><em>Step(ii)</em></u>:-
Test statistic
Answer:
Step-by-step explanation:
If the dress is 89.75 dollars
the tax is 8%, the sales tax will be:
89.75 x (8/100)=7.18
total price of the dress:
89.75+7.18= $ 96.93
It crosses the x axis when y = 0.
so we need to solve x^2 - x - 2 = 0.
This is done as follows:
x^2-x-2=0
(x-2)(x+1) = 0
Therefore x = 2 or x = -1.
So the two coordinates are (2,0) and (-1,0) the answer is A
Answer:
<h2>
aₙ = -3n + 8</h2>
Step-by-step explanation:
The nth term of an arithmetic sequence: aₙ = a₁ + d(n - 1)
{d = common difference}
a₁ = 5
a₄ = 5 + d(4 - 1)
-4 = 5 + 3d
-4 - 5 = 3d
3d = -9
d = -3
Therefore;
aₙ = 5 + (-3)(n - 1)
aₙ = -3n + 8
Check: a₁₀ = 5 + (-3)(10 - 1) = 5 - 27 = - 22
