Answer:i tried
Step-by-step explanation:
Answer:
the answers would be: A, C, and E
Step-by-step explanation:
This is false, -5(3e-2) is not less than -2(6e+7)
Step-by-step explanation:
simply the first one.
-9x -6y = 39 is nothing else than
3x + 2x = -13 multiplied by -3
which leaves the values and solutions unchanged, as we could simply divide by -3 again and end up with the original system and its solution.
Answer:
4 years old
Step-by-step explanation:
His sister is x years old.
Gary is 1 year less than 3 times her age, so his age is
3x - 1
His age is 11, so we can write an equation.
3x - 1 = 11
Add 1 to both sides.
3x = 12
Divide both sides by 3.
x = 4
Answer: She is 4 years old.
