Answer:
x=-7/4
Step-by-step explanation:
4x+7=0
4x=-7+0
4x=-7
x=-7/4
Answer:
(b) distance, y=20x, 480 mi
Step-by-step explanation:
As is often the case, the only self-consistent answer choice is the correct one.
__
The dependent variable is plotted on the y-axis, so is distance.
(x, y) = (2, 40) tells you y = 20x is an appropriate choice of equation.
In 24 hours, the dragonfly will fly y = 20(24) = 480 miles.
3a - 5(a - 2) = 34
Distribute -5 inside the parentheses
3a - 5a + 10 = 34
Combine like terms
-2a + 10 = 34
Subtract 10 from both sides
-2a = 24
Divide both sides by -2
a = -12
Answer:
The gradient of 
is 
.
Step-by-step explanation:
Geometrically speaking, the gradient of a curve is the slope of the tangent line at a given point of the curve. From perspective of Differential Calculus, the gradient is the first derivative of the curve. Let , then the gradient of the curve is:
(1)
The gradient of is .
