Answer: Expression: 13+x
Answer if she scored 3 in the second half=16
Step-by-step explanation:
Since she scored 13 points in the first half and X amount in the second, it's asking for the total number. Since X is unknown, it's simply 13+x. Then, they say X=3. Now plug 3 in for X and solve.
ie: 13+3
The answer to this question is and always will be 0.
Step 1.) Distribute
-x + (-1)(13) + (-1)(4x)= (-3)(5) + (-3)(-9x) + 2
-x -13 -4x= -15 + 27x +2
Step 2.) Combind like terms
-5x -13= 27x -13
Step 3.) All the x's on one side
-13= 32x-13
Step 4.) Solve
x=0
Step-by-step explanation:
We have (x + 4)(x + 2)cm² = 3cm².
=> x² + 6x + 8 = 3
=> x² + 6x + 5 = 0
=> (x + 5)(x + 1) = 0
=> x = -5 or x = -1
x = -5 is rejected as both side lengths would have negative values.
Therefore x = -1;
- (x + 4)cm = (-1 + 4)cm = 3cm
- (x + 2)cm = (-1 + 2)cm = 1cm
Hence the dimensions are 3cm by 1cm.
2x^2 - 11 = 87
2x^2 = 87 + 11 = 98
x^2 = 98/2 = 49
x = sqrt (49) = + or - 7