No, the functions shown are not inverses because the inverse for f(n)=-(n+1)^3would be f^−1(n)=−3√n−1.
Answer:
![\huge\boxed{-28}](https://tex.z-dn.net/?f=%5Chuge%5Cboxed%7B-28%7D)
Step-by-step explanation:
We can substitute the given values of
,
, and
to find the value of this expression.
![-4 | a + b - c|](https://tex.z-dn.net/?f=-4%20%7C%20a%20%2B%20b%20-%20c%7C)
![-4 | 3 + (-2) - (-6)|](https://tex.z-dn.net/?f=-4%20%7C%203%20%2B%20%28-2%29%20-%20%28-6%29%7C)
We know that <em>two negatives make a positive. </em>This means that
will be the same this as ![-2+6](https://tex.z-dn.net/?f=-2%2B6)
![-4 | 3 + -2 + 6|](https://tex.z-dn.net/?f=-4%20%7C%203%20%2B%20-2%20%2B%206%7C)
Adding a negative is the same as subtracting a positive.
![\4 | 3-2+6|\\\\3-2+6 = 7](https://tex.z-dn.net/?f=%5C4%20%7C%203-2%2B6%7C%5C%5C%5C%5C3-2%2B6%20%3D%207)
![-4 \cdot 7 = -28](https://tex.z-dn.net/?f=-4%20%5Ccdot%207%20%3D%20-28)
Hope this helped!
Answer:
Reject H0; there is significant evidence that the proportion of site users who get their world news on this site has changed since 2013 and is significantly different from 45%
Step-by-step explanation:
Sample size, n = 3603
x = 1697
Phat = x/n = 1697/3603 = 0.4709 =47.09%
H0 : p = 0.45
H1 : p > 0.45
The test statistic :
(phat - p) / sqrt[(p(1 - p)) /n]
(0.4709 - 0.45) / sqrt[(0.45(0.55))/3603]
0.0209 / 0.00828810932
Test statistic = 2.5217
The Pvalue :
Using the Pvalue from Test statistic calculator ; α = 0.05 ;
Pvalue at 95% confidence = 0.005839
Pvalue < α ;
Hence, we reject the Null
Therefore, we conclude that the sample gives evidence that the proportion of site users who get their world news on this site has changed since 2013.
the answer would be 3.7+(-1.5)
Answer:721
Step-by-step explanation:It is 721 because when you have a sale tax you add it and that 100%+6%=106%=1.06 then 350x1.06 which equals to 371. Since it’s sales tax then 371+350=721. So it is $721.