# algebra,help

posted by .

I need help with these problems can someone show me how to solve them step by step.If anyone has time i appreciate it.

Problem #1
Geometry. The length of a rectangle is 1 cm longer than its width. If the diagonal of the rectangle is 4 cm, what are the dimensions (the length and the width) of the rectangle?

Problem#2
Science and medicine. The equation
h=-16t^2+112t gives the height of an arrow, shot upward from the ground with an initial velocity of 112 ft/s, where t is the time after the arrow leaves the ground. Find the time it takes for the arrow to
reach a height of 180 ft.

first:

l-1=w

diagonal^2=length^2 + width^2
16=l^2 + (l+1)^2
solve for l

On the second, put 180 onto the equation , getting
16t^2 +112t - 180=0

I would divide by four to simplify it.

## Similar Questions

1. ### algebra , help

Can someone help me set up the equations thanks. Directions: Solve each of the following applications. Give all answers to the nearest thousandth. Problem: Geometry. The length of a rectangle is 1 cm longer than its width. If the diagonal …
2. ### math,algebra

Can someone help me just to do the setup of this the two equations. I can do the rest is just the step up THAT I AM HAVING DIFFICULTY. The length of a rectangle is 2in. more than twice its width. If the perimeter of the rectangle is …
3. ### math

a rectangle is to be inscribed under the arch of the curve y = 2cosx from x=-pi to x=pi. What is the length of the base of the rectangle with maximum area?
4. ### math

a rectangle is to be inscribed under the arch of the curve y = 2cosx from x=-pi to x=pi. What is the length of the base of the rectangle with maximum area?
5. ### algebra

The area of the wall you are going to paint is 50 feet2. If the width is half the height, what are the dimensions of the wall?
6. ### Algebra 1

Can someone simply tell me what methods I must use in order to solve this word problem?
7. ### Algebra 1

Can someone simply tell me what methods I must use in order to solve this word problem?
8. ### Algebra 1--Step-by-Step

Can someone show me how to solve these step-by-step?
9. ### Introductory Algebra

the length of a rectangle is 7 meters more than twice the width. the perimeter is 68 meters. solve for length and width. I need this step by step using the blueprint...please.
10. ### math

1.solve for p 3(p+q)=p A.q=-2/3p B.q=-3/2p C.p=-2/3q D.p=-3/2q 2. solve for b then find the value of b when a=3 4a=2b-7 A.-9/2 B.5/2 C.19/2 D.17 3. solve for r d=rt A.r=dt B.r=t/d C.d/t D.r=d-t 4. find the width of a rectangle with …

More Similar Questions

Post a New Question