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3 years ago

Let f(x)=2x-1, and g (x)=x^2-3

Mathematics

1 answer:

Minchanka [31]3 years ago

3 0

f(4)= 4^2 - 1 = 15

g(f(4)) = g(15) = 2(15) = 30

Hope this helps!

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The system of equations y = –2x + 1 and y = x + 5 is shown on the graph below. Which statement is true about the solution to the

Semenov [28]

Answer:

the answer is a

Step-by-step explanation:

y = -2x +1

y = x + 5

-2x+1=x+5

-3x = 4

x= -4/3

y = -1 1/3 + 5= 3 2/3

8 0

3 years ago

BRAINLIEST!! Pleaseee help me this is urgent

mojhsa [17]

Answer:

190 195

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

50 z

Solve for z:

1. Cross multiply

190z = (50)(195)

190z / 190 = 9750 / 190

z ≈ 51.3

5 0

3 years ago

GIVING BRAINLIEST!!!

lord [1]

Answer:

Explanation:

PEMDAS method. First do the parentheses. Multiply first, then subtract 12 from that number. Once finished with the parentheses, multiply by 8.

7 0

3 years ago

Find the standard deviation for the set of data. (17,26,28,9,30, 29,6,21,23}

gogolik [260]

Using it's concept, the standard deviation for the given data-set is of 8.22.

<h3>What are the mean and the standard deviation of a data-set?</h3>

The mean of a data-set is given by the <u>sum of all values in the data-set, divided by the number of values</u>.

The standard deviation of a data-set is given by the square root of the <u>sum of the differences squared between each observation and the mean, divided by the number of values</u>.

The mean for this problem is:

M = (17 + 26 + 28 + 9 + 30 + 29 + 6 + 21 + 23)/9 = 21

Hence the standard deviation is:

$S = \sqrt{\frac{(17-21)^2 + (26-21)^2 + (28-21)^2 + \cdots + (21-21)^2 + (23-21)^2}{9}} = 8.22$

More can be learned about the standard deviation of a data-set at brainly.com/question/12180602

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7 0

2 years ago

Help please give answer please

Vsevolod [243]

The mean is 8 gerbils and the MAD is 4.29.

Mean is the average of a set of numbers. It is determined by adding the numbers together and dividing it by the total number

Mean = sum of the numbers / total number

(0 + 3 + 6 + 9 + 11 + 13 + 14) / 7 = 8

What is the MAD?

MAD = ∑ l x - m(x) l

| (0 - 8) + (3 - 8) + (6 - 8) + (9 - 8) + (11 - 8) + (13 - 8) + (14 - 8)| / 7 = 4.29

To learn more about mean, please check: brainly.com/question/25842202

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3 0

2 years ago