Search 72,946 tutors

(9z+8)2 (9z+8)(9z+8)  An item raised to the second power is that item multiplied times itself (9z+8)9z + (9z+8)8  Using the distributive property 9z(9z+8) + 8(9z+8)  Simply rewriting 9z*9z + 9z*8 + 8*9z + 8*8  Using the distributive property again 81z2 + 72z + 72z + 64          Doing...

# getting new life insurance depends on how old you are , and how old you are depends on what year you were born (answer)

This just an example. Lets say L(y) is the function of getting life insurance. We could go further and say L(y) = 90-y which could be something like the percent chance of getting life insurance where x is your current age. We can see that past a certain age your chance of getting life...

# How to mutiply (14x-28y)/[-7(x-2y)] (answer)

There are a few ways to do this. (14x-28y)/[-7(x-2y)] [14(x-2y)/[-7(x-2y)]  Factor 14 out of each term of the numerator 14/-7                      Cancel (x-2y) out of the numerator and denominator 14/-7  = -2 The other way is more complicated, but will yield the same results (14x-28y)/[-7(x-2y)]...

# What is the x-coordinate of the solution to the system x+y=5X-2y=-1 (answer)

x+y = 5X-2y = -1 (This is really saying that these three things all are equal.) x + y = -1 5x - 2y = -1 x + y = 5x -2y There are a couple of different ways we can solve this. Substitution: x + y = -1 y = -x - 1 (subtract x from both sides) 5x - 2y = -1 5x -2*(-x...

Add the parentheses based on highest order of operation, then left to right. example: 4-3*7-12/6+2 = x 4-(3*7)-(12/6)+2 = x  Multiplication and division are higher order than add and subtract, but                                      the same as each other so they are left to right...

# Hi i dont know how to multiply my fractions with exponents and variables (answer)

You're multiplying fractions, like any fractions. The Top time the Top over the Bottom time the Bottom. As for the variables and exponents, you're only multiplying polynomials. Eample ((x2 - 1x - 6)/7x) * ((x+2)2/(4X-2)) ( (x2 - 1x - 6) * (x+2)2 ) / ( 7x * (4x -2) )   Multiply...

# factor the expression: x(x-8)+(x-8) (answer)

x(x-8) + (x-8) Looking at you can see that (x-8) is in both terms if you replaced (x-8) with y you'd have x(x-8) + (x-8) xy + y = xy + 1y  where y = x-8 y(x+1) factor the y out (x-8)(x+1) simply replace y with it's original value of x-8. You can factor out the (x-8) as though...

# (x^2+3x+2)/(x^2-3x-4) how do i simplify it? (answer)

Remember that when multiplying (AX + B)(CX +D) you get (AC)X^2 + (AD + CB)X + BD So I look for the factors of the first and third terms then try to combine them to get the coefficient of the second term. (Hint: Prime Factors are very useful here) Factors of +1 are (1 * 1) or (-1 * -1)...

# A ketchup packet contains 3/16 ounce of ketchup. How many ketchup packets can be made using 24 ounces of ketchup? (answer)

What we know:  1 ketchup packet has 3/16 oz of ketchup                            We have 24 oz of ketchup.   What were Trying to find out: How may packets of ketchup can be made with 24oz of ketchup.   To find the number of packets I simply divide 24 oz by the ounces in a single...