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dolphi86 [110]
3 years ago
14

2 points 2. Which of the following graphs represents a FUNCTION? Choose ALL that apply B

Mathematics
1 answer:
inna [77]3 years ago
6 0

Answer:

A, B

Step-by-step explanation:

Not C, D, E, because they show two points with the same x-coordinate but different y-coordinates.

In a function, each x is paired with <u>just one</u> y.

The graph of a function will never have two or more points <u>stacked verticall</u>y.

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How is this number read? 14.102
qwelly [4]

Answer:

fourteen and one-hundred-two

Step-by-step explanation:

we tend to read "." as "point" but the proper reading would be to read the number left to the decimal point (14), add the word "and" and then read the number to the right of the decimal point (102)

5 0
2 years ago
One student solved the inequality −4 &gt; x/-7 and got 28 28. Are they both correct? Explain
dusya [7]

Answer: solutions are the same, just written differently, inequality sign is reversed when multiplying by a negative. Yes, both students are correct.Jul 8, 2018

Step-by-step explanation:

8 0
3 years ago
A local trucking company fitted a regression to relate the travel time (days) of its shipments as a function of the distance tra
Karo-lina-s [1.5K]

Answer:

The critical values for α = 0.10 are t=±1.7341.

Step-by-step explanation:

The critical values for a two tailed test are the values of t that are placed in the limit of the significance level. If the test statistic t is greater than this critical values, the null hypothesis is rejected.

To determine this values, we first divide the significance level by 2. With a t-table or app, we can determine the t values for P(x>|t|)=α/2=0.05.

In this case, for a degrees of freedom DF=20-2=18, we have the test statistic t=±1.7341 that satisfies the condition.

Solution of the hypothesis test

In this problem we want to prove if the slope of the regression model is different from 0, by means of a hypothesis test.

First, we state the null and alternative hypothesis:

H_0: B_1=0\\\\H_1: B_1 \neq 0

The significance level is \alpha=0.10.

The degrees of freedom for a simple regression model is:

DF=n-2=20-2=18

The standard error estimated of the slope is 0.0053.

The test statistic t is calculated as:

t=\frac{B_1}{SE}=\frac{0.0214}{0.0053} = 4.0377

The P-value for a two-tailed test for a t=4.0377 and DF=18 is:

P=0.00078

The P-value is smaller than the significance level, so the effect is statistically significant. The null hypothesis is rejected.

7 0
3 years ago
Mark's coach told him that he should
Georgia [21]

Answer:

24 practices in 9 weeks

Step-by-step explanation:

Rate =   8 times / 3 weeks

8 times / 3 weeks    *   9 weeks  = 24 times

5 0
2 years ago
What has no congruent sides and no congruent angles?
Mademuasel [1]
Hey there!

The correct answer to your question is a circle.

A circle doesn't have any congruent sides or congruent angles, meaning they don't have sides or angles that point in the same direction.

Hope this helps you.
Have a great day!
3 0
2 years ago
Read 2 more answers
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