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shtirl
18 days ago
11

Roxy has received the following quiz scores so far this year:

Mathematics
2 answers:
Leona [9.2K]18 days ago
8 0

Response:

A

Detailed explanation:

SKAUSHBD GCVTFJKIEJF                         time frame

Leona [9.2K]18 days ago
8 0

Answer:

I think the first one

Step-by-step explanation:

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Identify the errors made in finding the inverse of y = x2 + 12x. An image shows a student's work. Line 1 is x = y squared + 12 x
Svet_ta [9486]

Answer:

The three errors are:

1) Incorrectly swapping the variables x and y.

2) Failure to use the ± symbol.

3) The domain is wrong; it should be x ≤ 0.

Step-by-step explanation:

Review the following steps.

y = x^2 + 12x

Step 1: x = y^2 + 12x

The initial step is incorrect because the variables x and y were switched improperly; it should be:

x=y^2+12y

Step 2: y^2= x-12x

Step 3: y^2= -11 x

Step 4: y=\sqrt{-11x}, for x ≥ 0

Step 4 contains an error as the ± sign is required. Additionally, the function's domain is inaccurately stated.

The radicand must be nonnegative, implying that x must satisfy x ≤ 0.

4 0
1 month ago
Read 2 more answers
The weights of soy patties sold by Veggie Burgers Delight are normally distributed. A random sample of 15 patties yields a mean
Svet_ta [9486]

Answer:

t=\frac{3.8-4}{\frac{0.5}{\sqrt{15}}}=-1.549

Step-by-step explanation:

Given data and notation

\bar X=3.8 indicates the sample mean

s=0.5 refers to the sample standard deviation

n=15 is the sample size

\mu_o =4 represents the value we are testing.

\alpha indicates the significance level for the hypothesis test.

t refers to the statistic of interest.

p_v is the p-value for the test (the variable we are interested in).

Formulate the null and alternative hypotheses.

I will set up the hypotheses to verify if the mean weight falls below 4 ounces, formalizing:

Null hypothesis: \mu \geq 68

Alternative hypothesis: \mu < 4

Since our sample size is < 30 and the population standard deviation is unknown, it’s advisable to utilize a t test to compare the actual mean against the reference value, with the statistic calculated as follows:

t=\frac{\bar X-\mu_o}{\frac{s}{\sqrt{n}}} (1)

t-test: "This test compares group means and is commonly utilized to determine if the mean is (greater than, less than, or not equal to) a specific value."

Calculate the statistic

We can substitute the provided information into formula (1):

t=\frac{3.8-4}{\frac{0.5}{\sqrt{15}}}=-1.549 

3 0
28 days ago
A shoe manufacturer compared material A and material B for the soles of shoes. Twelve volunteers each got two shoes. The left wa
AnnZ [9071]
a) These samples are dependent, as measurements are taken from the same individuals at different times using different methods. b) Upon examining the QQ plot, it shows no considerable deviations suggesting a normal distribution assumption for the differences. c) For the hypotheses indicated, a paired t-test is suitable due to the repeated measurements. Evaluating the p-value reveals it exceeds the significance threshold, leading to the conclusion that we FAIL to reject the null hypothesis, thus indicating that the mean difference is not significantly different from 0.
4 0
8 days ago
How does the graph of mc024-1.jpg compare to the graph of the parent function mc024-2.jpg?
babunello [8402]
The question is as follows:
<span>In what ways does the graph of g(x)=1/x-5+2 differ from the graph of the parent function f(x)=1/x?
</span>
=================================================
Solution:
========
The given function ⇒ g(x) = \frac{1}{x-5} +2

The parent function of the provided function ⇒ f(x)= \frac{1}{x}

After graphing both equations, as illustrated in the attached image.
It can be concluded that
<span>g(x) is translated 5 units to the right and 2 units upwards from f(x).
</span>

Thus, the correct answer is option 2
<span />
6 0
22 days ago
Read 2 more answers
A quarter is approximately 0.07 inches thick. A dollar bill is approximately 4.3 × 10-3 inches thick.
lawyer [9226]

m = 6.57 and n = -2

Detailed explanation:

To solve this question, convert the thickness of a dollar bill into standard notation and compare the two thicknesses.

0.07 compared to 0.0043 results in 0.0657

0.0657 = 6.57 x 10^-2

Thus, a quarter is thicker than a dollar by 6.57 x 10^-2.

m = 6.57 and n = -2

8 0
3 days ago
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