Answer:
(4,-1)
Step-by-step explanation:
x is 4 y is -1
Answer:dont think this right i just need to do this
Step-by-step explanation:its 3
Answer:
52
Step-by-step explanation:
2 kg is the same as 2000 g.
2000 g / 38 g = 52.6
There will be 52 bags (with some cinnamon left over).
Answer:
I think 2+2=4
Step-by-step explanation:
20+2=22 tho
(a) 95 = (x+7)*(x-7)
(b) 95 = (x+7)*(x-7)
Expand the brackets:
95 = x² -7x + 7x -49 = x² - 49
Subtract x² from both sides:
95-x² = -49
Subtract 95 from both sides:
-x²=-49-95
-x²= -144
Divide both sides by -1 to get rid of the negative numbers:
-x²/-1=-144/-1
x²=144
Take the square root of 144:
x = ± squareroot of 144
x = 12 or -12
x = 12 because you cannot have a negative age so Trina is 12 years old.
