okay guys, just one more word problem. and i don't think this one has any typos in it:
The perimeter of a rectangle is 27 cm and its area is 35 square centimeters. Find the length and the wide of the rectangle.
i just need help getting it started...
Ok P=27cm where P is the perimeter. A = 35cm^2 where A is the area.
We know that A =L*W and P=2(L+W) thus we have
(1) 35=L*W
(2) 27=2(L+W)
From (1) we have 35/L = W. Use this in (2) to get
27=2(L + 35/L) Now solve for L. This is a quadratic equation.
thanks a lot. i had been trying to do this for a long time :)
Velocity of 10 meters per second from the top of a 24 meter high cliff and it misses the cliff on the way down when will the rock be 4 meters from the water below?
y=x2-10x
# people have a combined height of 10 ft. 9 inches. A is 9 inches shorter than B, who is 6 inches taller than C. How talle are A,B, and C?
3 people have a combined height of 10 ft. 9 inches. A is 9 inches shorter than B, who is 6 inches taller than C. How talle are A,B, and C?
y=x(x-10)
x=0
x-10=0
solutions=0 and 10
rjty
The hypotenuse or a right angle has a length of 13 cm. The sum of the lengths of the other two sides is 17. Find the unknown side lengths.
4 answers