Set it up like this, going from words on the page to letters and variables:
-3(2x+5) = -57. Twice a number is 2x, increased by 5 is 2x+5, and that is multiplied by -3 to get a total of -57. Distribute the -3 into the parenthesis to get -6x - 15 = -57. Move the 15 over by addition to get -6x = -42. Divide both sides by -6 to get that x = 7
Answer:
C
Step-by-step explanation:
Natural numbers are numbers which are positive whole numbers greater than 0. This includes 1, 2, 3, ...etc.
To determine, solve each equation.
A. x=0
B. x = 1/3
C. x=3
D. x=-4, 4
Only C is a natural number.
Answer:
34/39
Step-by-step explanation:
scale factor = new length / old length
34's factors are 1, 2, 17, 34
39's factors are 1, 3, 13, 39
no common factors bigger than 1 so cannot simplify
The answer might be 8 if you subtract the two numbers
Answer:
The answer to your question is below
Step-by-step explanation:
-4x² + 9y² + 32x + 36y - 64 = 0
-4x² + 32x + 9y² + 36y = 64
-4(x² + 8x ) + 9(y² + 4x ) = 64 Factor coefficients
-4(x² + 8x + 4²) + 9(y² + 4x + 2²) = 64 - 64 + 36 Complete trinomials
-4(x + 4)² + 9(y + 2)² = 36 Factor trinomials
Divide by 36
Simplify
