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3 years ago

I need help please Which table represents a linear function?

Mathematics

1 answer:

Alex73 [517]3 years ago

8 0

The first one I believe.

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HELP PLEASE !!!!!

Semmy [17]

Answer:

standard deviation=2.94

7 0

3 years ago

Find the exact value of the following. Find -xy, for x = -75.9 and y = 2.6. -xy =

julsineya [31]

Answer:

197.34

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Step-by-step explanation:

Step 1: Define

Identify

x = -75.9

y = 2.6

-xy

Step 2: Evaluate

Substitute in variables: -(-75.9)(2.6)
Multiply: (75.9)(2.6)
Multiply: 197.34

6 0

3 years ago

Thi sis the question

jek_recluse [69]

$\text{Given that,}\\\\x^2 + \dfrac1{x^2} = 38\\\\\\(i)\\\\\left(x-\dfrac 1x \right)^2 = x^2 + \dfrac 1{x^2} - 2 \cdot x \cdot \dfrac 1x\\\\\\\implies \left(x-\dfrac 1x \right)^2 = 38 -2 = 36\\\\\implies x - \dfrac 1x = \pm\sqrt{36} = \pm 6 \\\\\\(ii)\\\\x^2 + \dfrac 1{x^2} = 38\\\\\\\implies \left(x^2 + \dfrac 1{x^2} \right)^2 = 38^2\\\\\\\implies x^4 + \dfrac 1{x^4} + 2\cdot x^2 \cdot \dfrac 1{x^2} = 1444\\\\\\\implies x^4 + \dfrac 1{x^4} + 2 = 1444\\\\\\$

$\implies x^4 +\dfrac 1{x^4} = 1444-2 = 1442$

7 0

2 years ago

A normal curve with a mean of 500 and a standard deviation of 100 is shown. Shade the region under the curve within one standard

Triss [41]

Answer:

The region between one standard deviation from the mean is (400,600) which should be 68.27% of the data.

Step-by-step explanation:

The mean of this data set is 500 and the standard deviation is 100. The data that are within one standard deviation of the mean, must be in the range between 400 and 600, which according to the normal curve should be about 68.27% of the samples. The shaded region is shown in red on the attached figure.

8 0

3 years ago

-7x + 8y = 19 7x – 9y=-17

Gemiola [76]

Answer:

Solution set = (-5, -2)

Step-by-step explanation:

Given equations;

-7x + 8y = 19 ------------- eq1

7x – 9y=-17 --------------- eq2

Adding both equations:

-y = 2

y = 2

Put value of y in eq2:

7x - 9(-2) = -17

7x + 18 = -17

7x = -17 -18

7x = -35

x = -5

Solution set = (-5, -2)

i hope it will help you!

8 0

4 years ago

Read 2 more answers