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PSYCHO15rus [73]

3 years ago

9

What is a quadratic function?

1 answer:

ycow [4]3 years ago

3 0

C - F(x)= 5x^2-4x+5

Quadratic function equations have an x raised to the second power and makes a parabola when graphed. B could potentially also be right depending on who you ask because x is being raised to the second power but since the equation says 0x it means there is no x to be raised to the second power so i would say C.

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The record time for running the Boston Marathon is 2.12 hours at an average speed of 12.5 miles per hour. What distance does the

Gala2k [10]

Answer:

26.5 miles.

Step-by-step explanation:

Given: Time for running Boston Marathon= 2.12 h

Speed= 12.5 mph

Distance covered in Boston Marathon

Distance covered= speed x time

Distance covered = 12.5 x 2.12=26.5 miles

∴ Distance covered in the Boston Marathon is <u>26.5 miles.</u>

6 0

3 years ago

Read 2 more answers

PLz answer this im confused

Bond [772]

5x+12=37
X=5

Hope u do well on the test

8 0

3 years ago

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In the spring of 2017, the Consumer Reports National Research Center conducted a survey of 1,007 adults to learn about their maj

musickatia [10]

Answer:

a) 0.567

b) (0.5414,0.5926)

c) (0.5364,0.5976)

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 1007

Number of respondent that they will be able to afford health insurance in the future, x = 571

a) point estimate of the population proportion

$\hat{p} = \displaystyle\frac{x}{n} = \frac{571}{1007} = 0.567$

b) 90% Confidence Interval.

$\hat{p} + z_{\text{critical}}\times \sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}$

$z_{critical}\text{ at}~\alpha_{0.10} = \pm 1.64$

Putting values, we get,

$0.567 \pm 1.64\times \sqrt{\dfrac{0.567(1-0.567)}{1007}}\\\\0.567 \pm 0.0256=(0.5414,0.5926)$

c) 95% Confidence Interval.

$\hat{p} + z_{\text{critical}}\times \sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}$

$z_{critical}\text{ at}~\alpha_{0.05} = \pm 1.96$

Putting values, we get,

$0.567 \pm 1.96\times \sqrt{\dfrac{0.567(1-0.567)}{1007}}\\\\0.567 \pm 0.0306=(0.5364,0.5976)$

5 0

4 years ago

The circle graph shows the percent of time you spent on different activities after school. which choice below is false?

Flauer [41]

Answer:

"you spend most of the time doing homework" is false

Step-by-step explanation:

for the sentence above to be true, its segment would have to be more than half the chart

6 0

3 years ago

There are 12 peaches in a carton. The mean mass of all the peaches is 175 grams. What is their total mass?

ohaa [14]

Their total mass is 187

4 0

3 years ago