Answer:
D
Step-by-step explanation:
The answer is 4 lawns because one fourth of 16 is 4 and the question is asking how many did he mow on main street.
Answer:
x>-2
Step-by-step explanation:
first you subtract 10 from both sides to find x
10-3x-10<16-10
-3x<6
now here you divide both sides by -3
-3x/-3<6/-3
BUT since you are dividing by a negative number the sign will have to flip
so the answer will be
x>-2
We need a system of equations to solve this. "Difference" is to subtract, and we are taking this difference of the 2 squared unknowns to be 20. That equation is

. Our "first number is x^2, so 3 times that is 3x^2. "Increased by" is adding to that first number. What we are adding is the second number. The second equation is

. Let's solve the first equation for x^2:

and sub that value for x^2 into the second equation.

and

. Subtract 60 from both sides and combine the y^2 terms to get

. Divide both sides by 4 to get y^2 = 16 and y = 4. Let's go back now and solve for x. We will use the fact that y^2 = 16 to solve for x^2 and then take the square root of it.

, x^2 = 4, so x = 2. Your solutions are x = 2 and y = 4. There you go!