(8b + 7)(7b + 9)
7(3) + 8(4) x 2 21 + 32 x 2 43 x 2 86 The final answer is 86.
okay well the answer to that is 91 got it (PS. you should know it!) :) peace!
58.
The answer is 380, I hope. :P
(8b + 7)(7b + 9)
b2 + 8b + 7 is an expression that represents a number. The exact identityof that number depends on the value of 'b', and whenever 'b' changes, thenumber also changes.
Assuming your equation = 0, then:b3+8b2+7b = 0factor out b:b(b2+8b+7) = 0factor the squared term:b(b+7)(b+1) = 0So the answers are:b = 0b+7 = 0, b=-7b+1 = 0, b=-1
If you mean: 7/8b - 1 = -15/16b + 4 Then the value of b works out as 0.3625
The equation can be rewritten as: (in Math, it is advised that the order of terms be arranged. In this equation, the term 7b comes before constant 9 which is the correct arrangement.)7b - 9 = 8b - 7To solve, transpose 8b to the left and 9 to the right so the equation becomes:7b -8b = 9 - 7-b = 2multiply both sides by -1 (to balance the equation) to make b positive:-1(-b) = -1(2)B= -2To check:7b - 9 = 8b - 77(-2) - 9 = 8(-2) - 7-14 -9 = -16 -7-23 = -23The answers in both sides of the equation is equal therefore, YOU have derived to a CORRECT answer...
around 7 billion to 8 billion people
7(3) + 8(4) x 2 21 + 32 x 2 43 x 2 86 The final answer is 86.
7 + 7 + 7 + 7 + 7 + 7 + 7 + 7 + 7 + 7 + 7 + 7 + 7 + 7 or 7 x 14 = 98 Dont you have a calculator...?
okay well the answer to that is 91 got it (PS. you should know it!) :) peace!
58.
The answer is 380, I hope. :P
7+7+7+7+7+7+7+7 is the same as 7 multiplied by 8, so the answer is 56.