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IrinaK [193]
3 years ago
14

7.20 7.2 greater equal or less

Mathematics
1 answer:
OlgaM077 [116]3 years ago
6 0
When you add a zero onto the end of a decimal place, it does not add or subtract value from that decimal. You can essentially cross it off, and the number will be the same. The only time it really matters is if you need to use significant figures.

Therefore 7.20 = 7.2.

Equal
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Write a real-word problem that involves classifying a quadrilateral. Then solve the problem.
natima [27]
Hello there!

Let me try :)

You decided to tell someone to make a book for you. You need to tell him what shape you would like the book to have. But since you want it to be quadrilateral, you need to go there and make sure that the person is doing it correctly. So that they don't give you the book with a shape of a triangle, then you would have problem to add it on your shelf because it wouldn't look interesting.

Note: A quadrilateral is defined as a polygon (a closed shape) with 4 sides, so any shape/object with four sides can be considered a quadrilateral.


I hope this helps!
3 0
3 years ago
The graph of a quadratic function has x intercepts at -3 and 5/2, and y intercept at 10. Give the function.
sesenic [268]

Answer:

  f(x) = -4/3x² -2/3x +10

Step-by-step explanation:

The quadratic regression function of a graphing calculator or spreadsheet can determine the equation for you.

___

Or, you can determine it yourself.

The equation can be written in the form ...

   f(x) = a(x +3)(x -5/2) . . . . . . . using the given x-intercepts

for some value of "a"

For x = 0, this must match the y-intercept.

  f(0) = a(0 +3)(0 -5/2) = 10

  -15/2·a = 10

  a = -20/15 = -4/3

So, the function can be written as ...

  f(x) = (-4/3)(x +3)(x -5/2)

or

  f(x) = -4/3x² -2/3x +10

7 0
3 years ago
Read 2 more answers
What is slope how is it calculated
Helen [10]
Slope is the change in Y over the change in X. It is calculated by finding the difference between the y values, and the difference in x values.
3 0
3 years ago
Year
Crazy boy [7]

Answer:

-1.025

Step-by-step explanation:

right answer

4 0
3 years ago
Read 2 more answers
A random sample of 10 parking meters in a beach community showed the following incomes for a day. Assume the incomes are normall
Vlad1618 [11]

Answer: (2.54,6.86)

Step-by-step explanation:

Given : A random sample of 10 parking meters in a beach community showed the following incomes for a day.

We assume the incomes are normally distributed.

Mean income : \mu=\dfrac{\sum^{10}_{i=1}x_i}{n}=\dfrac{47}{10}=4.7

Standard deviation : \sigma=\sqrt{\dfrac{\sum^{10}_{i=1}{(x_i-\mu)^2}}{n}}

=\sqrt{\dfrac{(1.1)^2+(0.2)^2+(1.9)^2+(1.6)^2+(2.1)^2+(0.5)^2+(2.05)^2+(0.45)^2+(3.3)^2+(1.7)^2}{10}}

=\dfrac{30.265}{10}=3.0265

The confidence interval for the population mean (for sample size <30) is given by :-

\mu\ \pm t_{n-1, \alpha/2}\times\dfrac{\sigma}{\sqrt{n}}

Given significance level : \alpha=1-0.95=0.05

Critical value : t_{n-1,\alpha/2}=t_{9,0.025}=2.262

We assume that the population is normally distributed.

Now, the 95% confidence interval for the true mean will be :-

4.7\ \pm\ 2.262\times\dfrac{3.0265}{\sqrt{10}} \\\\\approx4.7\pm2.16=(4.7-2.16\ ,\ 4.7+2.16)=(2.54,\ 6.86)

Hence, 95% confidence interval for the true mean= (2.54,6.86)

7 0
4 years ago
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