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# The equation of line QR is y = negative 1 over 2x + 1. Write an equation of a line perpendicular to line QR in slope-intercept form that contains point (5, 6). (answer)

Shelly,   1/(2x=1) is not the equation of a line, but of an hyperbola.

# C = 72 + 16x. (answer)

Break even means (C)ost = (R)evenue   If c = 72 + 16x and r = 19x then 72+16x = 19x therefore 3x = 72 or   x = 24 skateboards

# how do I solve the extraneous solution (8x+4)-10= -3 (answer)

An extraneous solution is a slolution to the equation that does NOT work when you plug it into the equation. 8x+4-10=-3 so 8x -6 = -3 and therefore 8x = 3 then x = 3/8. Now pllug 3/8 into the equation for x and we get 8(3/8) + 4 -10 = -3  or  3 +4 -10 = -3 which is true so there is NO extraneous...

# the equations whose are the reciprocals of the roots of 2x squared -3x-5=0 is what? (answer)

2x2-3x-5 is the equation of a parabola.  Where the parabola cuts or touches the x axis are the 'roots'. we can find these roots if they exist by 3 methods. 1. factoring the equation 2. completing the square 3. using the quadratic formula by factoring we arrive at (2x-5)(x+1)=0...

I have been tutoring students in algebra for over 20 years. MY METHODOLGY & TUTORING GOALS: Mathematics can be intimidating to students who MUST take the classes but see no practical benefit to their future plans and goals. Teaching mathematic subjects should be brought to a level that...

# What is the product of this given equation? (answer)

In your text book, there is a section showing that (a+b)(a-b) = a2 - b2. (the middle term cancels out.) Applying this knowledge (ab+7)(ab-7) = (ab)2 - 72 so the answer is (ab)2 - 49    or a2b2 -49  they are the same.

(x+9)(x+2) / (x+3)(x+5)

# Sets of real numbers (answer)

The Real Numbers are ALL numbers (including counting numbers, positive and negative whole numbers, fractions, decimals roots of numbers, logarithms of numbers etc). the only thing not included in the real numbers are the Complex (imaginary numbers). Think of  the set of all real numbers...

# difference between prove that,show that (answer)

From the online free dictionary, PROVE means   4. Mathematics a. To demonstrate the validity of (a hypothesis or proposition). b. To verify (the result of a calculation).

# how do you solve for the possible answers for log 16 base x+2 is equal to 2? (answer)

You must remember that logbx=y  implies by = x. so log(x+2)16 = 2 implies (x+2)2=16. Next (x+2)2 = x2+4x+4 So x2+4x+4-16 = 0 Then x2+4x-12 = 0. Using the quadratic formula (-b+√b2-4ac) / 2a  gives us -6 and +2. Therefore (-6)(2) = -12

first, you must know the rules of exponents. next you should change the radical to exponential form. then you can multiply. then you can change back to radical form.   Example:   ³√x2 = x2/3                 5√x3 = x3/5 to multiply these two we have x2/3*x3/5  = x(2/3+3/5)...

# when a quadratic function is inversed to a radical function, why does the radical function not correctly show the reflection of the graph? (answer)

The reason is that the inverse of x2 is NOT a function.  But in can be split up into two functions! we could have y =Sqrt x and y = -sqrt of x.

# seven times a number minus four times the same number (answer)

let's just call the number 'x'.  7 time  s is written 7x.  4 times that same number ('x') is written 4x. so we would have 7x - 4x . That's it!

# express 2.134x10power of 6 inn decimal notation (answer)

106 = 1,000,000. therefore 2.134 * 106= 2,134,000 The answer is b

# 8/(x+6) + 1/(3x+18) - 14/(4x+24) = 0 (answer)

Lets start by looking at the denominators. we will call them 1 2 and 3 1) x+6 2) 3x-18 which will factor to 3(x+6) 3) 4x+24 which will factor to 4(x+6) Notice: x+6 is in each denominator.  therefore (x+6) * 3*4 will be LCM An excluded solution will be one in which the denominator...

# simplify each expression . show cancelling and factoring . (answer)

18/24             divide both top and bottom by 6 to get 3/4 the factors would be 18 = 2*3*3        24 = 2*3*4 notice we have 2*3 in both numerator and denominator, therefore 6 would be common and the greatest common divisor. __________________ 7rs3/21r2s take the coefficients...

# Solve the equation cx/2 = af/g for x (answer)

It appears that you are looking for a test taker.  A good tutor wants to teach the student who really wants to learn the subject. This problem is easy and I a sure someone will answer it for you.