3 years ago

For the function f(x)=x2-4, fins the value of f(x) when x=6

Mathematics

1 answer:

Snowcat [4.5K]3 years ago

5 0

Answer:

Step-by-step explanation:

Substitute x = 6 into f(x), that is

f(6) = 6² - 4 = 36 - 4 = 32

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The answer is 169.

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√169=13
√154=12.41
√115=10.72

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3 years ago

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12% less since faster
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88% of 4 min and 23 sec=
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3 years ago

Two sides of a triangle are 8 m and 9 m in length and the angle between them is increasing at a rate of 0.06 rad/s. Find the rat

Lelechka [254]

<h2>Rate at which area is increasing is 1.08 m²/s.</h2>

Step-by-step explanation:

Area of triangle is with side a and b and angle C between them is given by

A = 0.5 ab SinC

Here we need to find how area changes with a and b fixed and C is changing,

$\frac{dA}{dt}=\frac{d}{dt}\left (0.5 absinC\right )\\\\\frac{dA}{dt}=0.5ab\frac{d}{dt}\left (sinC\right )\\\\\frac{dA}{dt}=0.5abcosC\frac{dC}{dt}$

We have

a = 8 m

b = 9 m

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Substituting

$\frac{dA}{dt}=0.5\times 8\times 9\times cos\left ( \frac{\pi}{3}\right )\times 0.06\\\\\frac{dA}{dt}=1.08m^2/s$

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Answer:

y=-2/3x

Step-by-step explanation:

if you use the graphing calculator, the y intercept of the equation is 0 therefore y=mx

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