SOLUTION: How to solve:
The differences between the square of a positive number and ten times the number 11. Find the positive number.
How to solve:
The height of a parallelogram
Algebra.Com
Question 267461: How to solve:
The differences between the square of a positive number and ten times the number 11. Find the positive number.
How to solve:
The height of a parallelogram is 2cm longer than its base. Its area is 120cm2. Find the base and height of the parallelogram.
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
The differences between the square of a positive number and ten times the number is 11.
Find the positive number.
x^2 - 10x = 11
x^2 - 10x - 11 = 0; our old friend, the quadratic equation!
Factors to
(x-11)(x+1) = 0
The positive solution
x = 11
Check: 11^2 - 10(11) = 11
:
How to solve:
The height of a parallelogram is 2cm longer than its base.
Its area is 120cm2. Find the base and height of the parallelogram.
:
Area of a parallelogram;
b * h = 120
"height is 2cm longer than its base."
h = (b+2)
Replace h with (b+2) in the area equation
b * (b+2) = 120
b^2 + 2b = 120
b^2 + 2b - 120 = 0; what luck! Another quadratic equation!
Factors to
(b-10)(b+12) = 0
Positive solution
b = 10 cm
then
h = 10+2 = 12 cm
;
Check 10 * 12 = 120 sq/cm
RELATED QUESTIONS
The difference between the square of a positive number and five times the number is 36.... (answered by ankor@dixie-net.com)
The difference between a square of a positive number and 5 times the number is... (answered by chibisan)
Here is the problem I am trying to solve: The square of a positive number is six more... (answered by mananth)
The sum of twice a number and 1 is equal to 3 times the positive square root of the... (answered by mananth)
the square of a positive number subtracted by 5 times the number is equal to 50 set up an (answered by ankor@dixie-net.com)
The square of a positive number is four more than three times the positive number. Find... (answered by stanbon,checkley75)
The Square of a positive number is six more then five times the positive number, find the (answered by solver91311)
Please help me solve this:
The square of a positive number is six more than five times... (answered by nerdybill)
the difference between a number and it’s positive square root is 12 find the... (answered by MathLover1)