2 years ago

The speed limit is 55 kilometers per hour. What is the speed limit in miles per hour?

Mathematics

1 answer:

Paha777 [63]2 years ago

5 0

Answer:

34.2 or 34.20

Step-by-step explanation:

I think that it is this

You might be interested in

Find all missing angles.

Monica [59]

1=51
2=34
3= 95 (i think)
4=38

6 0

2 years ago

What equation represents the relationship between p and q shown in the table

mash [69]

q = 10p because all of them are multiplied by ten

6 0

2 years ago

NCn is __________ equal to 1. always sometimes never

Black_prince [1.1K]

NCn is always equal to 1.

7 0

2 years ago

Read 2 more answers

Find a solution x = x(t) of the equation x′ + 2x = t2 + 4t + 7 in the form of a quadratic function of t, that is, of the form x(

Temka [501]

The particular quadratic solution to the ODE is found as follows:

$x=at^2+bt+c$
$x'=2at+b$

$(2at+b)+2(at^2+bt+c)=t^2+4t+7$
$2at^2+(2a+2b)t+(b+2c)=t^2+4t+7$

$\begin{cases}2a=1\\2(a+b)=4\\b+2c=7\end{cases}\implies a=\dfrac12,b=\dfrac32,c=\dfrac{11}4$

Note that there's also the fundamental solution to account for, which is obtained from the characteristic equation for the ODE:

$x'+2x=0\implies r+2=0\implies r=-2$

so that $x_c=Ce^{-2t}$ is a characteristic solution to the ODE, and the general solution would be

$x=Ce^{-2t}+\dfrac{t^2}2+\dfrac{3t}2+\dfrac{11}4$

4 0

3 years ago

Which fact helps you prove the isosceles triangle theorem, which states that the base angles of any isosceles triangle have equa

levacccp [35]

Answer:

D. If one angle of a triangle is larger than another angle, then the side opposite the larger angle is longer than the side opposite the smaller angle.

Step-by-step explanation:

3 0

2 years ago

Read 2 more answers