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3 years ago

Which value is NOT a solution of the inequality -2x + 5<7?

Mathematics

2 answers:

Ivenika [448]3 years ago

5 0

Answer:1

Step-by-step explanation: Rearrange the equation by subtracting what is to the right of the greater than sign from both sides of the inequality :

-2*x+5-(7)<0

Step by step solution :

STEP

Pulling out like terms

1.1 Pull out like factors :

-2x - 2 = -2 • (x + 1)

Equation at the end of step

STEP

2.1 Divide both sides by -2

Remember to flip the inequality sign:

Solve Basic Inequality :

2.2 Subtract 1 from both sides

x > -1

Inequality Plot :

2.3 Inequality plot for

-2.000 X - 2.000 > 0

One solution was found :

x > -1

cricket20 [7]3 years ago

3 0

Answer:

its 1, i think...

Step-by-step explanation:

If they are asking which one would equal to -2x+5<7 just combine like terms by moving the 5 to the 7 and get 7-5=2. So -2x=2, then 2/-2 is -1. Basically the answer is x=-1. But it seems like thats not a choice...

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The output y and input x of a device are related by y = x + 1.4x3 . (a) Find the values of the output for steady-state operation

erma4kov [3.2K]

Answer:

a) $y(1) = 2.4$ , $y(2) = 13.2$ , b) $y(x) = 2.4 + 5.2\cdot (x-1)$ , $y(1) = 2.4$ , $y(2) = 7.6$

Step-by-step explanation:

a) The values of the output for steady-state operation are:

$y(1) = 1 + 1.4\cdot (1)^{3}$

$y(1) = 2.4$

$y(2) = 2 + 1.4\cdot (2)^{3}$

$y(2) = 13.2$

b) The formula for linearization is:

$y(x) = y(1) +\frac{dy}{dx}|_{x = 1} \cdot (x-1)$

The first derivative of the formula evaluated at x = 1 is:

$\frac{dy}{dx}|_{x=1} = 1 + 4.2\cdot (1)^{2}$

$\frac{dy}{dx}|_{x=1} = 5.2$

The linearized model is:

$y(x) = 2.4 + 5.2\cdot (x-1)$

The output at x = 2 is presented below:

$y(2) = 2.4 + 5.2\cdot (2-1)$

$y(2) = 7.6$

Linearized model offers reasonable approximations for small intervals.

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3 years ago

If y = 3.2 when x = 1.6 find y when x = 19

faltersainse [42]

Thats easy
3.2/1.6=y/19

y=(3.2÷1.6)×19=38

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3 years ago

Why can you use any 2 points on a line to find the slope of the line

creativ13 [48]

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Hope this helped! :D

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3 years ago

Read 2 more answers

When we subtract (-10) from 7 we get which answer

kodGreya [7K]

Answer:

You would get 17

Step-by-step explanation:

7 - (-10) = 17

Hope this helps!

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