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2 years ago

Please help . I’ll mark you as brainliest if correct.

Mathematics

1 answer:

MariettaO [177]2 years ago

3 0

Answer:

[4, positive infinity]

Step-by-step explanation:

since f(4) exists, the interval starts at 4, and continues to infinity.

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Fabio and Carlos play on a basketball team together. In the last game, Fabio had 7 points less than 2 times as many points as Ca

Ymorist [56]

Let 'c' represent the number of points Carlos scored. 2c - 7 = 31 c = 19 points

7 0

3 years ago

The value of a dvd player decreases by 60% each year. If you purchased this dvd player today for $180, how much would the player

Volgvan

The formula is
A=p (1-r)^t
A future value?
P present value 180
R rate of decreases 0.6
T time 2 years
A=180×(1−0.6)^(2)
A=180×(0.4)^(2)
A=28.8

3 0

2 years ago

2. f(x)=4x+1 and g(x)=x2−4x−5, find (g◦f)(4).

Goryan [66]

Answer:

(g · f)(4) = 45

Step-by-step explanation:

f(x)=4x+1

g(x)=x² - 4x- 5

(g · f)(x) = 4(x² - 5) + 1

(g · f)(4) = 4(4² - 5) + 1

Following pemdas

(g · f)(4) = 4(16 - 5) + 1

(g · f)(4) = 4(11) + 1

(g · f)(4) = 44 + 1

(g · f)(4) = 45

8 0

1 year ago

6. The population of wolves is currently 250 in a forest. Scientists estimate that there should be a

prisoha [69]

Answer:

275

Step-by-step explanation:

250÷10=25 250+25=275

7 0

2 years ago

Suppose the population of IQ scores in the town or city where you live is bell-shaped, with a mean of 104 and a standard deviati

SVEN [57.7K]

Answer:

The mean of samples of 100 IQ scores taken out from this population will have a distribution with mean M=104 and standard deviation s=3.5.

Step-by-step explanation:

We know the population mean and standard deviation, that has a bell-shaped distribution:

$\mu=104\\\\\sigma=35$

The sampling distribution, the distribution of the mean of samples of size n out of this population, will have the same mean as the population mean.

$\mu_M=\mu=104$

The standard deviation will be related to the population standard deviation and the sample size as:

$\sigma_M=\frac{\sigma}{\sqrt{N}} =\frac{35}{\sqrt{100}}=3.5$

Then, the mean of samples of 100 IQ scores taken out from this population will have a distribution with mean M=104 and standard deviation s=3.5.

6 0

3 years ago