3x + 2y = 4
2y = -3x + 4
Divide by 2
Solution: y = -3/2x + 2
x + 2y = -4
2y = -x - 4
Divide by 2
Solution: y = -1/2x - 2
Answer:
-16 + 8z
Step-by-step explanation:
4(-4 + 2z)=
Distribute the 4
4*-4 + 4(2z)
-16 + 8z
Answer:
dx/dt = 5√5/2
Step-by-step explanation:
Given:
dx/dt = 25 feet per second
According to Pythagoras theorem:
x² + 90² = y²
We know that x = 30 ft
So,
x² + 90² = y²
30² + 90² = y²
y = 30√10
So,
x² + 90² = y²
By taking differentiate:
2x dx/dt = 2y dy/dt
[x/y][dx/dt] = dy/dt
dx/dt = 5√5/2
Answer:
x < 79
Step-by-step explanation:
The amount they scored (x or any other variable) is less than 79, so you have to use a less than sign.
