(a + b) + c = a + (b + c) the parenthesis means you are supposed to add a and b first on the left, but the property tells you it is ok to regroup and add b and c first... you will get the same answer ( 3 + 6) + 7 gives the same answer as 3 + (6 + 7)
7 * (c + 2) = 7 * c + 14
(c + 8)(c - 8)= c^2 - 64
You can use the quadratic formula for an equation of the form a*x^2 + b*x + c = 0. x = (-b +/- sqrt(b^2-4*a*c))/(2*a) In this case: a = 1 b = -3 c = -28 x = (3 +/- sqrt(9 - 4*(-28)))/2 x = (3 +/- sqrt(121))/2 x = (3 +/- 11)/2 x = 7 or -4 Another option is to attempt to simplify the equation into the form (x-a)(x-b) = 0. Sometimes you can do this by observation. For example: 28 = 4*7 7-4 = 3 Thus: (x-7)(x+4)=0 In this case, a and b are known as the "roots" of the equation, with a = 7 and b = -4.
-3
7-c
"Decreased by" just means "minus," so that's C-11.
what is 12 decreased by p
I don't quite understand the phrasing of the question. In mathematics a product is the result of multiplication. If you have three numbers A, B and C Then A x B might be one product A x C might be the second product B x C might be the third product This would leave A x B x C as the fourth product. So, if we have 3, 5 and 7 then 3 x 5 = 15 3 x 7 = 21 5 x 7 = 35 and 3 x 5 x 7 = 105
8ab/4c^7=2ab/c^7
a+(b+c)=b+(a+c) 2+(7+4)=7+(2+4)
3.5 and a space :)
add 4 to each side: c + 7 = d so d is greater than c by 7.
Oh, dude, you're hitting me with some math lingo! So, the quotient of c and nine is c/9, and if you decrease that by 3, you just subtract 3 from it. So, the expression would be (c/9) - 3. Voilà! Math made easy... kind of.
3 x 7 x 7 x a x b x c = 147abc
If you're trying to find the product, that means multiply. So 4*8*C would be 32*C (or 32C). Since the value of C is unknown, this is as far as the equation can go. Remember: Sum means add. Difference means subtract. Product means multply. Quotient means divide.
4c = 12 c = 3