pls help me (i got this from khan academy) f(x)=(5x+1)(4x−8)(x+6)f, left parenthesis, x, right parenthesis, equals, left parenthesis, 5, x, plus, 1, right parenthesis, left parenthesis, 4, x, minus, 8, right parenthesis, left parenthesis, x, plus, 6, right parenthesis has zeros at x = − 6 x=−6x, equals, minus, 6, x = − 1 5 x=− 5 1 x, equals, minus, start fraction, 1, divided by, 5, end fraction, and x = 2 x=2x, equals, 2. What is the sign of f ff on the interval − 1 5 < x < 2 − 5 1

Negative

Step-by-step explanation:

f(x) = (5x + 1)(4x - 8)(x + 6)

     x = -1/5   x = 2    x = -6

Zeros (in order): -6, -1/5, 2

Now, let's look at the End Behavior of the function.

The leading coefficient is positive (5x)(4x)(x) = +20x³ so the right side of the graph goes toward positive infinity.

The Degree is odd (degree = 3) so the left side is opposite of the right side which means it goes toward negative infinity.

  ooo

        -6             -1/5               2

  --             +                 --               +

y-values for -1/5 < x < 2 is NEGATIVE

fahrenheit

step-by-step explanation:

fahrenheit is more precise than celsius. the ambient temperature on most of the inhabited world ranges from -20 degrees fahrenheit to 110 degrees fahrenheit—a 130-degree range. on the celsius scale, that range is from -28.8 degrees to 43.3 degrees—a 72.1-degree range. this means that you can get a more exact measurement of the air temperature using fahrenheit because it uses almost twice the scale.

2.2°  

step-by-step explanation:

let θ = the angle of elevation.

tanθ =77/2020

tanθ = 0.038 12

      θ = tan⁻¹0.038 12

      θ = 2.2°