Answer:
Sometimes
Step-by-step explanation:
When x is a nonzero integer, then x can be
If x is negative, then 
is positive (multiplying negative number by -3 you get positive number).
If x is positive, then is negative (multiplying positive number by -3 you get negative number).
So, the statement "When x is a nonzero integer, the quantity -3x will be negative" is sometimes true.
Answer:
Step-by-step explanation:
It depends on whether the 30 cm side is the hypotenuse, or one of the legs.
If the 30 cm side is the hypotenuse, then the third side is √(30^2-10^2) = √800 = 20√2 cm
If the 30 cm side is one of the legs, then the hypotenuse is √(30^2+10^2) = √1,000 = 10√10 cm
Answer:
No
Step-by-step explanation:
The variables are different in both problems. In 2×+7=27, it's 10, while in the other problem, it's 9.
27 doesn't equal 28.
You need to know sum of inner angles of a triangle. Then you can write the equation relating with X
