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MakcuM [25]
3 years ago
10

Find the x intercepts for y=x^2-2x

Mathematics
1 answer:
Dominik [7]3 years ago
3 0
Y=x^2-2x
y= x (x-2)
x=0,2
(0,0)(0,2)

y intercept is (0,0)

check
plug in 0 for X
y=(0)^2+2 (0)
y=0

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Round 0.0695712 to 1 significant figure
lys-0071 [83]

It would be 7x10^-2

That number would be rounded to 0.07

4 0
3 years ago
The weather report stated there was a 2/3 chance of rain on Friday, but it was more likely to rain on Saturday than Friday. What
Juliette [100K]
You don't have any choices here, so we can just find the range of the answer. Then, you can select the correct answer.

The probability must be greater than 66.67%:  P > 66.67% (or 2/3).

The chance of rain on Friday is 2/3. If it is more likely on Saturday, then it must be more than 2/3. 2/3 is about 66.67% percent.
6 0
3 years ago
Spaulding is the leading maker for basketballs in the US. Spaulding prides itself on the quality that its basketballs have the r
Vesna [10]

Answer:

0 < 0.05, which means that we reject the null hypothesis, meaning that the air pressure of the balls is different of the target value of 7.9.

Step-by-step explanation:

The air pressure of a particular ball has a target value of 7.9 PSI.

This means that the null hypothesis is:

H_{0}: \mu = 7.9

The alternate hypothesis is:

H_{a}: \mu \neq 7.9

The test statistic is:

z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

In which X is the sample mean, \mu is the value tested at the null hypothesis, \sigma is the standard deviation and n is the size of the sample.

The hypothesis tested means that \mu = 7.9

Suppose the basketballs have a normal distribution with a standard deviation of 0.20 PSI.

This means that \sigma = 0.2

When a shipment of basketballs arrive, the consumer takes a sample of 21 from the shipment and measures their PSI to see if it meets the target value, and finds the mean to be 7.3 PSI.

This means that X = 7.3, n = 21

The test statistic is:

z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

z = \frac{7.3 - 7.9}{\frac{0.2}{\sqrt{21}}}

z = -13.74

pvalue:

We are testing that the mean pressure is different than the target value of 7.9, and since the test statistic is negative, the pvalue is 2 multiplied by the pvalue of z = -13.74, which we find looking at the z-table.

z = -13.74 has a pvalue of 0.

2*0 = 0

0 < 0.05, which means that we reject the null hypothesis, meaning that the air pressure of the balls is different of the target value of 7.9.

8 0
2 years ago
Please help me answer this question I’m very confused and I need help
Dmitrij [34]

Answer:

hi yes 5x2=312 plus 8 equals the fourth of 2

Step-by-step explanation:

8 0
2 years ago
Which of the following is the solution to the equation x + 7.4 = 49.8?
miss Akunina [59]
X+7.4=49.8
   -7.4  -7.4
x=49.8-7.4

x= 42.4
3 0
3 years ago
Read 2 more answers
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