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2 years ago

Which transformation reflects f(x)=(x-1)² over the y-axis?

Mathematics

1 answer:

Rufina [12.5K]2 years ago

8 0

Answer:

A) f'(x) = 0.3((x-1)²+1)

Step-by-step explanation:

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In a random sample of 18 families, the average weekly food expense was $95.60 with a sample standard deviation of $22.50. Determ

shepuryov [24]

Answer:

t-distribution should be used to construct a confidence interval.

Step-by-step explanation:

We are given that a random sample of 18 families, the average weekly food expense was $95.60 with a sample standard deviation of $22.50.

We have to determine whether a normal distribution (Z values) or a t- distribution should be used or whether neither of these can be used to construct a confidence interval.

Since in this question we are provided with;

Sample average weekly food expense, $\bar X$ = $95.60

Sample standard deviation, s = $22.50

Sample of families, n = 18

The distribution that we will use here to construct a confidence interval will be t-distribution because in the question we don't know anything about population standard deviation $(\sigma)$ .

Normal distribution is used when we know population standard deviation $(\sigma)$ .

So, the pivotal quantity for confidence interval that will be used is One-sample t-test statistics;

P.Q. = $\frac{\bar X -\mu}{\frac{s}{\sqrt{n} } }$ ~ $t_n_-_1$

Therefore, t-distribution should be used to construct a confidence interval.

3 0

3 years ago

X² - 40x-129 resolve into factor

Lelu [443]

Answer:

(x - 43)(x + 3)

Step-by-step explanation:

consider the factors of the constant term (- 129) which sum to give the coefficient of the x- term (- 40)

the factors are - 43 and + 3 , since

- 43 × + 3 = - 129 and - 43 + 3 = - 40 , then

x² - 40x - 129 = (x - 43)(x + 3) ← in factored form

8 0

2 years ago

Can someone help me fill in the blank

Elden [556K]

Answer:

integer

Step-by-step explanation:

The greatest integer function produces the greatest integer less than or equal to x

8 0

3 years ago

Read 2 more answers

What is the difference between Delta x and dx? ...?

MA_775_DIABLO [31]

Δx (delta x) is about a secant line, a line between two points representing the rate of change between those two points. That's a "differential" (between the two points).

dx is about a tangent line to one point, representing an instantaneous rate of change. That makes it a "derivative."

6 0

3 years ago

An animal shelter spends $1.00 per day to care for each cat and $4.50 per day to care for each dog. Damian noticed that the shel

Amanda [17]

Answer:

4 cats

18 dogs

18 x 4.5 = 81

4 x 1.0 = 4

81 + 4 = 85.00

22 ÷ 2 = 11

Start there and just numbers and cost till you find the right numbers

Step-by-step explanation:

7 0

3 years ago