A building has a ramp to its front doors to accommodate the handicapped. If the distance from the building to the end of the ram
p is 25 feet and the height from the ground to the front doors is 7 feet, how long is the ramp? (Round to the nearest tenth.) (5 points)
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The expression equivalent to given expression is
<em><u>Solution:</u></em>
Given expression is:
We are asked to find the expression equivalent to given expression
Assume that denominator does not equal to zero
We can apply the exponent rule in given expression
Apply the above rule in given expression
Thus the equivalent expression is found
- Solve 2m + n = 2 and 3m - 2n = 3 using substitution.
We can use the substitution method to solve linear equations of this form. Let's solve for m & n.
To solve a pair of equations using substitution, first solve one of the equations for one of the variables. Then substitute the result for that variable in the other equation.
Choose one of the equations and solve it for m by isolating m on the left-hand side of the equal sign.
Subtract n from both sides of the equation.
Divide both sides by 2.
Multiply 1/2 times -n+2.
Substitute for m in the other equation, 3m-2n=3.
Multiply 3 times .
Add to -2n.
Subtract 3 from both sides of the equation.
Divide both sides of the equation by , which is the same as multiplying both sides by the reciprocal of the fraction.
Substitute 0 for n in . Because the resulting equation contains only one variable, you can solve for m directly.
The system is now solved.