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Elza [17]
2 years ago
9

Function or not a Function​

Mathematics
1 answer:
Vadim26 [7]2 years ago
5 0

Answer:

Function; Not a function

Step-by-step explanation:

Write the ordered pair in the first set (x, y):     (1, 11), (2, 7) , (3, 2)

Write the ordered pair in the second set (x, y):     (1, 3), (1, 4),  (2, 4) , (3, 2)

The first set in a function because no ordered pair has the same x value.

The second set in not a function because the x value is the same in two of the ordered pairs.

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3 years ago
What is 4x(12x6-4^2)+9
krok68 [10]

Answer:

48x⁷ - 64x + 9

Step-by-step explanation:

Step 1: Write out expression

4x(12x⁶ - 4²) + 9

Step 2: Evaluate exponent

4x(12x⁶ - 16) + 9

Step 3: Distribute

48x⁷ - 64x + 9

8 0
3 years ago
Read 2 more answers
A poll was taken this year asking college students if they considered themselves overweight. A similar poll was taken 5 years ag
Katyanochek1 [597]

Answer:

At 5% significance level, it is statistically evident that    there is nodifference in the proportion of college students who consider themselves overweight between the two poll                                  

Step-by-step explanation:

Given that a poll was taken this year asking college students if they considered themselves overweight. A similar poll was taken 5 years ago.

Let five years ago be group I X and as of now be group II Y

H_0: p_x =p_y\\H_a: p_x \neq p_y

(Two tailed test at 5% level of significance)

                Group I            Group II              combined p

n                  270                 300                         570

favor            120                  140                          260

p                   0.4444            0.4667                   0.4561

Std error   for differene = \sqrt{\frac{0.4561(1-0.4561)}{570} } \\=0.0209

p difference = -0.0223    

Z statistic = p diff/std error =       -1.066

p value =0.2864

Since p value >0.05, we accept null hypothesis.

        At 5% significance level, it is statistically evident that    there is nodifference in the proportion of college students who consider themselves overweight between the two poll                                  

7 0
3 years ago
Which statement describes a unit rate? A) Sara ate 1 cookie B) Sara is driving 16 miles C) Sara is driving 30 miles per 1 hour D
lapo4ka [179]
A unit rate is a ratio with a number in comparison to 1 (per 1). So, In this case...

C) Sara is driving 30 miles per 1 hour is an example of unit rate.
8 0
3 years ago
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From 20 to 11 miles
IrinaK [193]

Answer:

20 - 11 = 9

Step-by-step explanation:

20 - 11 = 9 and weird you gave no other info.

8 0
2 years ago
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