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Rom4ik [11]
4 years ago
13

Is this relation a function?

Mathematics
2 answers:
schepotkina [342]4 years ago
4 0
No. Their can’t be two x’s with the same value.
Mila [183]4 years ago
3 0

Answer:no

Step-by-step explanation:

A function must have each x value map onto 1 y value. The x value 11 maps to two y values (1,3)

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14 1/6 - 7 1/3 in simplest form <br> Help plz
Firdavs [7]

Answer: 7 -1/6

Step-by-step explanation:

Multiply the denominator and numerator (1/3) by 2 to get 2/6, then do 1/6-2/6, which gives you a negative. Then subtract your whole numbers (14-7) to get 7 -1/6

7 0
3 years ago
Read 2 more answers
On a 10-item test, three students in Professor Hsin's advanced chemistry seminar received scores of 2, 5, and 8, respectively. F
Inessa [10]

Answer:

For this distribution of test scores, the standard deviation is equal to the square root of 9

D) 9

Step-by-step explanation:

We need to know the standard deviation formula:

S=\sqrt{\frac{sum(x-Am)^2}{n-1} } (1)

Where:

S: Standard deviation

sum: Summation

x: Sample values

Am: Arithmetic mean

n:   Number of terms, in this case 3

Now, we need to know the arithmetic mean of the sample values: 2, 5 and 8

Am=\frac{2+5+8}{3} = 5

To know the standard deviation we need to have the summation of each term minus the arithmetic mean squared.

(x-Am)^2 of each term:

(2-5)^2=9\\(5-5)^2=0\\(8-5)^2=9

Now, we can find the standard deviation:

S=\sqrt{\frac{9+0+9}{3-1} } \\S=\sqrt{\frac{18}{2} } \\S=\sqrt{9}

The standard deviation is equal to the square root of 9

4 0
3 years ago
Read 2 more answers
Two angles are vertical angles. One angle is ( 8x + 15 ) and the other angle is 143. Solve for x.
sineoko [7]

Answer:

x = 16

Step-by-step explanation:

Verticle angles are always congruent, so:

(8x + 15) = 143

Now, we can solve to isolate x:

8x + 15 - 15 = 143 - 15  (subtract 15 from both sides)

8x/8 = 128/8                (divide both sides by 8)

x = 16

You can always plug in the value of x to the original equation to check your answer:

8(16) + 15 = 143

5 0
3 years ago
Please help! What is the value of B in the following proportion?
madreJ [45]

Answer:

B. 143

Step-by-step explanation:

11        b

----- = -------

12          156

using cross products

11 * 156 = 12 b

divide by 12

11 * 156/12 = b

11 * 13 = b

143 = b

7 0
3 years ago
Read 2 more answers
How many liters of water should be added to 18 liters of a 14% bleach solution so that the resulting solution contains only 10%
HACTEHA [7]
<h2>Answer:</h2>

18 liter = 14% Bleach

............ = 10% Bleach

......=

\frac{18 \times 10}{14}

\frac{180}{14}

= 12.9\%

4 0
3 years ago
Read 2 more answers
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