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3 years ago

4748.35 - 22.5x > 4700

Mathematics

1 answer:

Gre4nikov [31]3 years ago

4 0

Answer:

x < -2.15

Step-by-step explanation:

Solve:

4748.35 - 22.5x > 4700

Subtract 4748.35 on both sides:

4748.35 - 22.5x > 4700

-4748.35 -4748.35

-22.5x > -48.35

Divide by -22.5 on both sides:

*Remember to flip the sign because you are dividing by a negative number*

-22.5x > -48.35

/-22.5 /-22.5

x < -2.148...

Round to the nearest hundredth:

x < -2.148...

x < -2.15

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What is the x coordinate of the solution of the system? 2x+y=15 and x-y=3

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x - y = 3

x = 3 + y

x -3 = y

y = x-3

put it in 1st equation

2x +y = 15

2x + x - 3 = 15

3x - 3 = 15

3x = 15+3 = 18

x = 18/3 = 6

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Step-by-step explanation:

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Experimental data are collected as:

aliina [53]

Answer:

$y = 1.00114x + 1.75243$

Step-by-step explanation:

Given

The x and y values

Required

The regression line equation

Because of the length of the given data, I will run the analysis using online tools, then analyze the result.

From the analysis, we have:

$\sum x = 5050$

$\sum y = 5231.1011$

$\bar x = 50.5$

$\bar y = 52.311$

$SSX = 83325$ --- Sum of squares

$SP = 83419.7626$ --- Sum of products

The regression equation is calculated as:

$y = ax + b$

Where:

$a = \frac{SP}{SSX}$

So, we have:

$a = \frac{83419.76}{83325}$

$a = 1.00114$

$b = \bar y - a * \bar x$

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$b = 1.75243$

So:

$y = ax + b$ becomes

$y = 1.00114x + 1.75243$

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2 years ago