Can anyone help!?! I don’t understand the distance formula. Can someone pls explain it?

Mathematics

1 answer:

Jobisdone [24]3 years ago

5 0

Explain what? ........

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Can someone pls help thanks

kolezko [41]

I think I think that it is 8 hours. Hopefully that helps!

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3 years ago

On a map, ½ inch represents 200 miles. How long would a line on a map need to be in order to represent 1800 miles?

givi [52]

9 because 1,800 divided by 200 is 9

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3 years ago

Find the value of kk for which the constant function x(t)=kx(t)=k is a solution of the differential equation 5t3dxdt+2x−2=05t3dx

uranmaximum [27]

Given the differential equation

$5t^3 \frac{dx}{dt} +2x-2=0$

The solution is as follows:

$5t^3 \frac{dx}{dt} +2x-2=0 \\ \\ \Rightarrow5t^3 \frac{dx}{dt} =2-2x \\ \\ \Rightarrow \frac{5}{2-2x} dx= \frac{1}{t^3} dt \\ \\ \Rightarrow \int {\frac{5}{2-2x} } \, dx = \int {\frac{1}{t^3}} \, dt \\ \\ \Rightarrow- \frac{5}{2} \ln(2-2x)=- \frac{1}{2t^2} +A \\ \\ \Rightarrow\ln(2-2x)= \frac{1}{5t^2} +B\\ \\ \Rightarrow2-2x=Ce^{\frac{1}{5t^2}} \\ \\ \Rightarrow 2x=Ce^{\frac{1}{5t^2}}+2 \\ \\ \Rightarrow x=De^{\frac{1}{5t^2}}+1$

3 0

3 years ago

1) check if they given ordered pairs are solutions to the equation or not.

ziro4ka [17]

Answer: a) Yes
b) No

Explanation: Substitute the values of X and Y from the given points into the equation. I’ll use a) as an example:
Given point: (1,-3)
Equation: 4x-2y=10
Value of X: 1
Value of Y: -3
Substitute X and Y: 4(1)-2(-3)=10
4-(-6)=10
4+6=10 ✔︎

Therefore, the given ordered pair is a proper solution to the equation 4x-2y=10.

*You can use the same method for question b).*

3 0

3 years ago

Which system of equations has no solutions?

baherus [9]

Answer:

Step-by-step explanation:the lines do not cross therefor the two equations do not share a solution.

5 0

3 years ago