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Inessa05 [86]
3 years ago
10

Given f(x)=-4x+7 find f(2) how do i slove this

Mathematics
1 answer:
yan [13]3 years ago
8 0

Answer:

-1

Step-by-step explanation:

given f(x)=-4x+7 find f(2)

f(2) means question : if x=2, f(2)=?

f(2)= -4x2+7=-1

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Select 3 of the below equations that represent the line that has a slope of -2 and a y-intercept of 5
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Answer:

y = -2x + 5

y - 5 = -2x

2x + y = 5

Step-by-step explanation:

Hope this helps!!

8 0
3 years ago
A psychological researcher did a study with a sample of 84 boys and found that the meam length of time that they remained engage
lord [1]
Part a)
Best estimate for the population mean u:

The population is normally distributed. The best estimate for population mean would be the mean of the sample. So the best estimate for the population mean is 107 seconds. 

Part b)
99% confidence interval:
We have the sample mean and population standard deviation so using the z distribution we can find the confidence interval.

The z value corresponding to 99% confidence interval is 2.576

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(107-2.576* \frac{11.7}{ \sqrt{84} } ,107-2.576* \frac{11.7}{ \sqrt{84} }) \\  \\ 
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4 0
3 years ago
The football team has a total of jerseys. There are ​medium-sized jerseys. What percent of the jerseys are​ medium-sized jerseys
Katena32 [7]

Answer:

70% are medium-sized jerseys.

Step-by-step explanation:

The complete question is:

The football team has a total of 20 jerseys. There are ​14 medium-sized jerseys. What percent of the jerseys are​ medium-sized jerseys? nothing​% are​ medium-sized jerseys.

Solution:

The information provided is:

  • The football team has a total of 20 jerseys.
  • There are ​14 medium-sized jerseys.

Compute the percentage of medium-sized jerseys as follows:

\text{Medium-sized Jerseys}\%=\frac{n(\text{Medium-sized Jerseys})}{N}\times 100

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Thus, there are 70% medium-sized jerseys.

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2 years ago
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Alona [7]

Answer:

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Step-by-step explanation:

4 0
2 years ago
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earnstyle [38]

Answer:

13+t

Step-by-step explanation:

yes

8 0
1 year ago
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