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2 years ago

450.913365 rounded to the nearest tenths

Mathematics

1 answer:

lbvjy [14]2 years ago

4 0

450.9 since 1 is lower than 5

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Quiz

Dovator [93]

Answer:

y=21

These is no explaination

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2 years ago

The sum of one and the product of four and a number

sergeinik [125]

Answer:

5is the answer I think so...

5 0

2 years ago

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Sometimes a change of variable can be used to convert a differential equation y′=f(t,y) into a separable equation. One common ch

enot [183]

Answer:

$y=\frac{-7t^2+22t-7}{7t-22}$

Step-by-step explanation:

We are given that

Initial value problem

$y'=(t+y)^2-1$ , y(3)=4

Substitute the value $z=t+y$

When t=3 and y=4 then

z=3+4=7

$y'=z^2-1$

Differentiate z w.r.t t

Then, we get

$\frac{dz}{dt}=1+y'$

$z'=1+z^2-1=z^2$

$z^{-2}dz=dt$

Integrate on both sides

$-\frac{1}{z}dz=t+C$

$z=-\frac{1}{t+C}$

Substitute t=3 and z=7

Then, we get

$7=-\frac{1}{3+C}$

$21+7C=-1$

$7C=-1-21=-22$

$C=-\frac{22}{7}$

Substitute the value of C then we get

$z=-\frac{1}{t-\frac{22}{7}}$

$z=\frac{-7}{7t-22}$

$y=z-t$

$y=\frac{-7}{7t-22}-t$

$y=\frac{-7-7t^2+22t}{7t-22}$

$y=\frac{-7t^2+22t-7}{7t-22}$

8 0

3 years ago

What is the midpoint of the line segment with endpoints (1,-6) and (-3,4)

N76 [4]

Answer:

The midpoint is (-1,-1)

Step-by-step explanation:

To find the x coordinate of the midpoint, add the x coordinates and divide by 2

(1+-3)/2 = -2/2 =-1

To find the y coordinate of the midpoint, add the y coordinates and divide by 2

(-6+4)/2 = -2/2 = -1

The midpoint is (-1,-1)

8 0

2 years ago

The quadratic regression graphed on the coordinate grid represents the height of a road surface x meters from the center of the

Viktor [21]

Answer:

The height of the surface increases, then decreases, from the center out to the sides of the road.

Step-by-step explanation:

Let

y------> the height of the surface

x------> the road

we know that

The quadratic regression graphed represent a vertical parabola open downward

The function increase in the interval --------> $[-5,0)$

The function decrease in the interval --------> $(0,5]$

therefore

The height of the surface increases, then decreases, from the center out to the sides of the road.

3 0

2 years ago

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