We make a drawing to find the relationship between the angle and the sides
given
dh/dt=4m/sec
we get
tan(x)=h/40
where x is the angle and h is the height
take the derivitive of both sides
1/cos²(x)(x)dx/dt=
1/cos²(x)dx/dt=
1/cos²(x)dx/dt=
solve for dx/dt
times both sides by cos²(x)
dx/dt=
remember that dh/dt=4
also, solve for the angle at that time
h=40 and base=40 so x=45 degrees (pi/4 radians)
input that
dx/dt=
dx/dt=
dx/dt=0.05
A is the answer
1 1/3 divided 3/5
4/3 / 3/5
(4•5) / (3•3)
20/9
2.2222222(answer)
the correct answer is -9
The axis of symmetry for the graph of the function f(x) = 3x2 + bx + 4 is x = . What is the value of b?
⇒ -9
i just took the test
Answer:
y=3/2x -3 and y = 3/2x+3
Step-by-step explanation:
for two lines to be parallel, their slopes must be equal.
To find the slope of 3x-2y=8 we have to rearrange it to slope-intercept form.
-2y=8-3x
y=-4+3/2x
y = 3/2x - 4
the slope is 3/2. We have to select equations with the same slope.
y=3/2x -3
and y = 3/2x+3