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Sergio039 [100]
2 years ago
11

2x^2-5x-5=0PLEASE HELP BEEN WORKING ON THIS FOR HOURS PLEASE!!!!!!

Mathematics
1 answer:
klasskru [66]2 years ago
8 0

Answer:

Ok do u want me to find x?

Step-by-step explanation:

If yes then x=3.27

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Solve the inequality 25x + 12y + 4 <= 130
hodyreva [135]

31x is the answer ok


6 0
3 years ago
A basketball has a circumference of 29.5 inches using 3.14 as an approximation for pie what is the basketball volume to the near
Elena L [17]
It is about 434 cubic inches.

4 0
3 years ago
If 6 is added to x, the result is 17. Find the value of x.
IceJOKER [234]

Answer:

Step-by-step explanation:

To find x, we need to do opposite operations.

x+6=17

Subtract 6 from both sides, since subtraction is the opposite of addition, thus cancelling the 6 out.

x+6=17

 -6   -6

x=11

So x is 11.

---

hope it helps

6 0
3 years ago
Read 2 more answers
Matthew Casertano and Fox Chyatte make a series of bets. In each bet, Matthew sets the stake (the amount he wins or loses) at ha
Olin [163]

Answer:

219/256 = 0.855

Step-by-step explanation:

He starts with $256.

After the first bet, he either has $128 or $512.

After the second bet, he either has $64, $256, or $1024.

Repeating this pattern, the amount after n bets and r wins is:

A = 256 (½)ⁿ⁻ʳ (2)ʳ

And the number of ways A can be achieved is:

N = nCr

We're given that n = 8.

A = 256 (½)⁸⁻ʳ (2)ʳ

If r = 0, A = 1 and N = 1.

If r = 1, A = 4 and N = 8.

If r = 2, A = 16 and N = 28.

If r > 2, A > 50.  The sum of N for all r is 2⁸ = 256.

Of the 256 possible combinations, 1+8+28 = 37 result in less than $50, so 219 result in more than $50.

So the probability is 219/256 = 0.855.

5 0
3 years ago
Why might the t-test be more useful in actual practice when you are running statistics rather than a z-test? give an example of
KatRina [158]

The t-test might be more useful in actual practice when standard deviation or variance is unknown.

<h3>What is a t-test?</h3>

The t-test is used to determine how the averages of various data sets differ from one another.

When variance is not provided, the T-test, a particular kind of parametric test, is used to determine how the means of two sets of data differ from one another. When variance is provided, the Z-test indicates a hypothesis test that determines whether the means of two datasets differ from one another.

Example of t-test: If you flip a coin 1,000 times, for instance, you can discover that the outcome is distributed normally over all trials.

Example of z-test: We are conducting research using information gathered from cohorts of students who have taken Elementary Statistics in the past.

T-tests are typically more suitable when addressing issues with small sample sizes, whereas z-tests are suitable for large sample sizes.

Using the t-test for an ordinal variable, their frequency is not even close to a normal distribution, and the arithmetic mean offers an unsuitable measure of location.

Because we frequently don't know the population standard deviation, Z-Tests have this drawback.

Learn more about t-tests here:

brainly.com/question/6589776

#SPJ4

3 0
1 year ago
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