ok this your supposed to use the quadratic formula i think...

ok a tunnel is 4 m wide and 4 m high.

/|\
/ | \
/__|__\
4m

and a truck is 2 m wide and has to drive through it (Through the middle). what is the maximum height that the truck can be?

if your can help PLEASE do!! even give a hint :P

anyone get it????

Hi Trish:
I presume what they're asking is if you have a tunnel that is a parabola.
If that is right, then you can write the equation of the tunnel, and then you can find the maximal height of the truck. Do you think this is the problem?

how do i solve using subsittution and elimination method

i have no idea how to do equation sinvolving fractions and htey involve a lot of steps. What do i ned to do?

i love maths

Hello! It seems like you're struggling with solving equations involving fractions and using substitution and elimination methods. I'll do my best to guide you through the process step by step.

To solve equations involving fractions, follow these steps:

1. Clear any fractions by multiplying each term by the common denominator of all the fractions present in the equation. This will eliminate the fractions.

2. Simplify and solve for the variable.

Regarding the substitution and elimination methods, they are used to solve systems of equations with two or more variables. The substitution method involves solving one equation for one variable and substituting it into the other equation, while the elimination method involves adding or subtracting the equations to eliminate one variable.

Here's a general guide to using the substitution method:

1. Solve one equation for one variable in terms of the other variable.
2. Substitute the expression you found in step 1 into the other equation.
3. Solve the resulting equation for the remaining variable.
4. Substitute the value found in step 3 into either of the original equations to find the value of the other variable.
5. Check your solution by substituting the values back into both original equations.

And here's a general guide to using the elimination method:

1. Multiply one or both equations by constants to create opposite coefficients for one of the variables (e.g., if one equation has a coefficient of 2 for x and the other has a coefficient of -2 for x, you can multiply one of the equations by -1 to make the coefficients opposite signs).
2. Add or subtract the equations to eliminate one variable and solve for the other.
3. Substitute the value found in step 2 into either of the original equations to find the value of the remaining variable.
4. Check your solution by substituting the values back into both original equations.

Remember, practice is key to becoming comfortable with solving equations involving fractions and using substitution and elimination methods. Keep working on different problems and ask for help whenever you need it.

And it's great to hear that you love math! Enjoy exploring the world of mathematics.