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3 years ago

Please help!!! I really don’t get this only I get where the 3 are but please help me for the 4/5 and -0.4!

Mathematics

1 answer:

Naily [24]3 years ago

8 0

Answer:

-0.4 should be in between 0 and -0.5, however be as close to -0.5 as possible while not being ON -0.5.

3 4/5 should be in between 3 and 4, so you can split 4/5 into 8/10 which are equal to each other. Then you can pretend to split the 3 and 4 gap into 10 equal pieces. After you split the gap, count 8 parts to the left of 3.

Step-by-step explanation:

I hope you understand what I mean.

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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.

5 0

3 years ago

Someone please help me thank you

Elis [28]

Answer:

x intercept 2

y intercept 1

Step-by-step explanation:

The x intercept is where it crosses the x axis( or horizontal axis) It crosses at x =2

The y intercept is where it crosses the y axis ( or vertical axis). It crosses at y =1

4 0

3 years ago

Solve the following equation?<br> 6x-9+5x+8=4x+9+7x-10

kaheart [24]

I’m not sure what you’re looking for but I got 11x - 1 = 11 x - 1 and the statement is true

6 0

4 years ago

• 1.Find the scale factor of a blueprint if the scale is 3 inches = 6 feet. A. 1/2 B. 1/24 C. 1/3 D. 1/72

valentinak56 [21]

Answer:

B. 1/24

Step-by-step explanation:

Given: 3 inches = 6 feet

Convert 6 feet into inches.

6 feet = 72 inches

3/72. Simplying it, you get 1/24

8 0

3 years ago

What’s the slope intercept form of (2,5) and (0,1)

Travka [436]

Answer:

y=2x+1

Step-by-step explanation:

First you have to find the slope:

5-1/2 so 4/2 or 2

Then you write it in point-slope: (I used the point (0,1))

y-1=2x

Simplify than:

y=2x+1

8 0

4 years ago