Answer:
49 cm²
Step-by-step explanation:
The volume (V) of a cube is calculated as
V = s³ ← s is the length of the side, thus
s³ = 343 ( take the cube root of both sides )
s = = 7, thus
area of base = s² = 7² = 49 cm²
What are the amplitude and midline? I WILL MARK BRAINLIEST IF CORRECT.
1 answer:
Answer:
see explanation
Step-by-step explanation:
The amplitude is the value from the x- axis to the maximum, thus
amplitude = 2
the midline is the line midway between the minimum and the maximum
Assuming the graph is symmetrical about the x- axis
Then the max is 2 and the min is - 2
y = =
= 0
Thus the midline is y = 0
You might be interested in
Answer:
There is evidence to said that the proportion of all shoppers who currently prefer to buy generic instead of name-brand products is higher than 0.18
Step-by-step explanation:
First, we need to define the null and alternative hypothesis as:
H0: p = 0.18
H1: p > 0.18
Where p is the proportion of shoppers that said that they prefer to buy generic instead of name-brand products.
Then, we can calculated the test statistic using the following equation:
Where p' is the proportion of the sample and n is the size of the sample.
Replacing p by 0.18, p' by 0.21 (315/1500 = 0.21) and n by 1500, we get:
So, using the standard normal table, the p-value is calculated as:
p-value = P(z>3.02) = 0.0013
Additionally, At a 5% significance level, the critical value is the z value that let 5% on the right tail, so it is calculated as:
P(Z>z) = 0.05
Critical Value = 1.64
Finally, taking into account that the 5% significance level is higher than the p-value and the critical value is higher than the test statistic, we reject the null hypothesis and there is evidence to said that the proportion of all shoppers who currently prefer to buy generic instead of name-brand products is higher than 0.18
Answer:
Step-by-step explanation:
Combine like terms.
+
----------------------------
Please mark as Brainliest! :)