Answer:
the answer is a
Step-by-step explanation:
Answer:
Option A
Step-by-step explanation:
We will simplify the expressions given in the options first,
x² - 16 = (x - 4)(x + 4)
2x + 8 = 2(x + 4)
x² + 8x + 16 = (x + 4)²
Option A
×
=
=
Option B
÷
= ÷
=
=
Option C
÷
=
=
Option D
=
=
Therefore, Option A is the answer.
Using the z-distribution, it is found that the 90% confidence interval for mean calories in a 30-gram serving of all chocolate chip cookies is (143, 149).
We are given the <em>standard deviation</em> for the population, which is why the <em>z-distribution </em>is used to solve this question.
The information given is:
- Sample mean of .
- Population standard deviation of .
- Sample size of .
The confidence interval is:
The critical value, using a z-distribution calculator, for a <u>95% confidence interval</u> is z = 1.645, hence:
The 90% confidence interval for mean calories in a 30-gram serving of all chocolate chip cookies is (143, 149).
A similar problem is given at brainly.com/question/16807970
Answer:
2) D. y = 1,400 + 400m
Step-by-step explanation:
she starts the first month with the initial amount of 1400. this 1400 doesn't repeat monthly, so it isn't multiplied to anything. the 400m represents the 400 being added every month.