How to use the quadratic formula on a graphing calculator

Mathematics

1 answer:

wariber [46]3 years ago

7 0

Answer:

go to y= and type in the equation then press 2nd trace and then press 2 on the left side of the parabola find a point to the left of the x intercept and press enter then find a point to the right of the x intercept and press enter. then press enter when it ask you to guess and you have your answer

Step-by-step explanation:

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The estimate of a bookcase was 78.25in .The actual measurement was 75.50in. To the nearest tenth of a percent ,what was the perc

OLEGan [10]

Answer:

3.5% Error

Step-by-step explanation:

I used this equation - 100 * (1 - (75.5/78.25)) = 3.514376...(Rounded to the tenths place you get 3.5)

Breakdown: You want to get your error to do this first you get your percent that was correct which is - (75.5/78.25)

You then subtract this by one because this will give you your margin of error as a decimal hence - (1 - (75.5/78.25))

Lastly, multiply this by 100 because you want to convert the decimal into a percent then round to the nearest tenth of a percent resulting in 3.5% error.

4 0

3 years ago

Solve and check please i need help

viktelen [127]

Answer:

e = 7.5

Step-by-step explanation:

Hi,

15 = e/0.5

You need to find what e equals. To do that, you need e all by itself. So to get e by itself in this equation, you need to multiply by 1/2 (same thing as 0.5). 15 x 0.5 is equal to 7.5.

To check your work, 7.5/0.5 is equal to 15.

So you know it's correct.

I hope this helps you :)

6 0

3 years ago

Read 2 more answers

Double somme help please

Lady_Fox [76]

Answer:

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Step-by-step explanation:

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2 years ago

What is the mean and mad of this data set?

larisa86 [58]

Answer:

The mean number of gerbils seen per day is 6.

The mean absolute deviation of the data is 2.29.

Step-by-step explanation:

The mean of a data set is the value that represents the entire data set. It is the average value.

The formula to compute the mean of a data set is:

$\bar x=\frac{1}{n}\sum X$

The mean absolute deviation (MAD) of a data set is the average distance amid each value and the mean. The MAD provides us with an idea about the deviation in the data set.

The formula to calculate the value of MAD is:

$MAD=\frac{1}{n}\sum |x-\bar x|$