All categories

2 years ago

Let f (x)=x-2 and g(x)=x to the second power -7x-9.find f (g(-1))

Mathematics

1 answer:

Degger [83]2 years ago

5 0

f(g(-1)) = - 3

Evaluate g(-1) and substitute into f(x)

g(-1) = (-1)² -7(-1) - 9 = 1 + 7 - 9 = - 1

f(g(-1)) = (-1) - 2 = - 3

You might be interested in

Write 2 subtraction equations to show how to find 15-7

Mnenie [13.5K]

So 15-7 is 8

Here are some things I did:

10-2 or 28-20

6 0

3 years ago

Opposite reciprocal slope lines or parallel or perpendicular

GarryVolchara [31]

-- If two lines on a graph are parallel, then their slopes are equal.

-- If two lines on a graph are perpendicular, then their slopes are
negative reciprocals.

6 0

3 years ago

2. Water is leaking from a faucet at a constant rate of 1/3 gallon per minute.

Cloud [144]

Answer:

$W = \frac{1}{3}t$

20 gallons of water is leaked after an hour.

Step-by-step explanation:

Water is leaking at a constant rate of 1/3 gallon per minute.

a) We have to write a linear equation in two variables that show the amount of water, w, in gallons, that is leaked from the faucet after t minutes.

So, the equation is $W = \frac{1}{3}t$ ......... (1) (Answer)

b) Now, if t = 1 hour i.e. 60 minutes, then from equation (1) we can write

$W = \frac{1}{3}\times 60 = 20$ gallons.

Therefore, 20 gallons of water is leaked after an hour. (Answer)

5 0

2 years ago

A CD player holds 5 CDs, and each disc has 12 songs. If the CDs are changed randomly, find the probability that your favourite s

almond37 [142]

Answer:

1/(5*12) = 1/60 = .016 = 1.6%

Step-by-step explanation:

7 0

2 years ago

31/6 as a mixed number

liubo4ka [24]

Hello there awesome brainly user!

To convert $\frac{31}{6}$ to a mixed number you have to divide 31/6 which equals 5 R 1 Remember that the remainder is the numerator and the whole number is 5. So, the mixed fraction is $5\frac{1}{6}$

For further info, message me

Thanks and have a good day.

5 0

3 years ago

Read 2 more answers