02-03-2018
Mathematics

contestada

negative 1 over 2x + 2 = −x + 7

Respuesta :

sqdancefan sqdancefan

03-03-2018

Multiply by the denominator and solve the resulting quadratic.
.. -1/(2x +2) = -x +7
.. -1 = (2x +2)(-x +7)
.. 2x^2 -12x -15 = 0
And from the quadratic formula
.. x = (12 ±√((-12)^2 -4(2)(-15)))/(2(2))
.. x = 3 ±√16.5

x ≈ -1.062019 or 7.062019

Answer Link

Otras preguntas

Which decimal is equal to 7/10?A. 0.71B. 0.7C. 0.07D. 0.071

Explain the statement that waves cause both constructive and destructive change to the shore line

How do u do this ??? Alistair buys an antique chair for £600. It is expected to increase in value at the rate of 4.5% each year. How much is it expected to be w

Mary is making a pinata that has a ball-like shape. The pinata has a surface area of 40 feet. Use the formula for the surface area of a sphere: (S=4πr^2) to fin

What is the value of the expression shown below when a=51, b=2, and c=17? 3(a\c)^2

Which term describes the example below? A child with a widow’s peak has a mother who is homozygous dominant for a widow’s peak and a father who is homozygous do

What is a federal scout

Three numbers are in the ratio 6:3:1, and the sum of these numbers is 420. If the first number is reduced by 50%, and the second number is increased by 42, and

If a pizza costs 2.85 to make and customer pays 8.95 how much profit have I made as a percentage

8k-1=15 ? Help I have a question were we have to work this out what do I do?