Answer:
Step-by-step explanation:
- i^54 =
- (i^2)^27 =
- (-1)^27 =
- -1
Correct option is c)
<span>Given
situations:
Let my number be X
=> Triple my number = 3x
=> add six = + 6
=> subtract twice my number = -2x
=> my number plus 3 = x + 3
now, that we simplify each given word phrase, we will now create our equation.
=> 3x + 6 – 2x = x + 3
=> 3x – 2x = x + 3 – 6
=> x = x – 3
=> x – x = -3
Where x will be cancelled out, thus, this statement is not valid.</span><span>
</span>
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:
Emma = 17
Clare = 12
Mark = 34
Step-by-step explanation:
Emma = x
Clare = x-5
Mark = 2x
2x+x+x-5=63
4x=5=63
4x=63+5
4x=68
x=17
Emma = x = 17
Clare = x-5 = 17-5 = 12
Mark = 2x = 2(17) = 34
