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3 years ago

HURRY!!! Given the function find f(-1), f(0), f(2)

Mathematics

1 answer:

Zolol [24]3 years ago

7 0

Answer:

f(-1) = -10

f(0) = -6

f(2) = 8

Step-by-step explanation:

As the function says, when x is below 0, the part that we have to use is 7x-3, and when is equal or greater we use 7x-6.

We do so and just replace de values of x in each equation.

$f(-1)=7(-1)-3=-10\\f(0)=7(0)-6=-6\\f(2)=7(2)-6=8\\$

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What is the value of x in the solution

krok68 [10]

Answer:

$x =\dfrac 47$

Step-by-step explanation:

$~~~~~9x-1 = 2x+3\\\\\implies 9x -2x = 3+1\\\\\implies 7x = 4\\\\\implies x =\dfrac 47$

6 0

2 years ago

What’s is 2 1/2 divided 1/3

Marat540 [252]

Answer:

7 $\frac{1}{2}$

Step-by-step explanation:

$2\frac{1}{2} *$ the reciprocal of $\frac{1}{3}$

To find reciprocal, flip the top and the bottom.

So $\frac{1}{3}$ would be $\frac{3}{1}$ .

Multiply like normal.

6 0

3 years ago

The Law and Order detectives enter a house at 11:30 am and found a man on the floor murdered. They take his body temperature fin

taurus [48]

Answer:

Time of murder = 10:39 am

Step-by-step explanation:

Let the equation of exponential function representing the final temperature of the body after time 't' is,

f(t) = $a(e)^{nt}$

Here, a = Initial temperature

n = Constant for the change in temperature

t = Duration

At 11:30 am temperature of the body was 91.8°F.

91.8 = $98.6(e)^{nt}$ --------(1)

Time to reach the body to the morgue = 12:30 pm

Duration to reach = 12:30 p.m. - 11:30 a.m.

= 1 hour

Therefore, equation will be,

84.4 = $91.8(e)^{n\times 1}$

eⁿ = $\frac{84.4}{91.8}$

ln(eⁿ) = ln(0.9194)

n = -0.08403

From equation (1),

91.8 = $98.6(e)^{-0.08403t}$

$(e)^{0.08403t}=\frac{98.6}{91.8}$

$ln[(e)^{0.08403t}]=ln[\frac{98.6}{91.8}]$

0.08403t = 0.07146

t = 0.85 hours

t ≈ 51 minutes

Therefore, murder was done 51 minutes before the detectives arrival.

Time of murder = 11:30 - 00:51

= 10:90 - 00:51

= 10:39 am

7 0

2 years ago

My teacher won't help i I actually want to learn this can you please help me

Reika [66]

15 you have to do all the steps thank it this I think

6 0

3 years ago

Please help my small brain understand this:

antoniya [11.8K]

Answer

45 dolloar

Step-by-step explanation:

3 0

3 years ago