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Ket [755]
3 years ago
8

Using the quadratic formula to solve for x^2=5x-x, what are the values of x?

Mathematics
2 answers:
saw5 [17]3 years ago
6 0

It will be

X = 4

X = 0

Elden [556K]3 years ago
3 0

Answer: x=4, x=0

Step-by-step explanation:

x^2=5x-x

x^2-5x+x=0

x^2+4x=0

x(x-4)=0

x=4, x=0

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mr jenson wants to tile a walkway that has an area of 3.6 square metres. He determines that he will need to use 250 square tiles
miskamm [114]

Mr. Jenson needs 250 square tiles of dimensions 12 cm which cover 3.6 square metres walkway.

What is the area of Square?

The area of a square is the product of the length of each side with itself, i.e. Area A = s x s where s is the length of each side of the square.

Mr. Jenson wants to tile 3.6 sq. meters or 36000 sq. cm.

Total number of tiles is 250.

Area of tile = \frac{Total covered area}{Number of tiles} = 36000/ 250    = 144 sq. cm

s X s = 144 sq. cm

s = \sqrt{144} cm

s = 12 cm

Thus, Mr. Jenson needs 250 square tiles of dimensions 12 cm which cover 3.6 square metres walkway..

Learn more about Area of Square from :

brainly.com/question/1603804

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8 0
2 years ago
Is being gay wrong? also why do spiders protect frogs?
Serggg [28]

Answer:

No.. i dont think its wrong.

Step-by-step explanation: Spiders protect frogs for protection.

3 0
2 years ago
Hello<br><br> i need help with this<br><br> plz see attachmentss below
NemiM [27]

Problem 1

Answer: Choice C) sample is appropriately large; margin of error is plus/minus 0.187

-----------------------------

Explanation:

At 90% confidence, the z critical value is roughly z = 1.645 (this is found using a table in the back of your textbook)

n = 250 is the sample size, which is appropriately large (it's over n = 30)

s = 1.8 is the standard deviation

The margin of error E is found by the formula below

E = z*s/sqrt(n)

E = 1.645*1.8/sqrt(250)

E = 0.18727008303518

E = 0.187

note: the sample mean is not used at all in the computation of the margin of error.

===========================================

Problem 2

Answer: Choice D) both are effective; however, Intensity program is more effective compare to Q30X program

-----------------------------

Explanation:

There's not much to say here other than your teacher really wrote a lot to set up this problem. There's a lot of extra filler that you need to toss out and ignore. Basically the short of it is that Brant wants to run faster so he tests two programs. He finds that both are effective (since they both yield roughly the same percent decrease in run times) but the Intensity program is better by two percentage points. It's not much, but it's something. So this is why the answer is choice D.

===========================================

Problem 3

Answer: Choice A) appropriately large; margin of error is plus/minus 0.079

-----------------------------

Explanation:

n = 150 is the sample size. It is appropriately large as it is over n = 30

At 95% confidence, using a stats table (in the back of your book) you should find the critical value is z = 1.960

p = 0.56 is the decimal version of 56%, this is the proportion of those who use public transportation

We'll use a slightly different margin of error formula. This time it's to measure the error for proportions (rather than means)

E = z*sqrt(p*(1-p)/n)

E = 1.960*sqrt(0.56*(1-0.56)/150)

E = 0.07943845584267

E = 0.079


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3 years ago
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Rip juice wrld man what an inspirational person
4 0
2 years ago
Read 2 more answers
The length of a cell phone is 1.2 inches and the width is 4.4 inches. The
vodka [1.7K]

Answer:

5.5 in

Step-by-step explanation:

proportion is 3/11. so 3/11 = 1.5/x

x=5.5 in

7 0
2 years ago
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