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suter [353]
3 years ago
6

Does anyone know what graph is correct?

Mathematics
2 answers:
VashaNatasha [74]3 years ago
6 0

First graph is the correct one.

when x= 1

y=f(x) = -√1 = -1

when x= 2

y= -√2

djyliett [7]3 years ago
3 0
The third wait no the first actuality it’s the second one
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135. sale price and 25percent of sale price what was the regular price
ollegr [7]

Answer:

the regular price was 33.75

5 0
3 years ago
Please help -2x++8-6=-32
arlik [135]

Answer:

x = 17

Step-by-step explanation:

-2x+8-6=-32

lets isolate the x variable:

-2x=-32-8+6

-2x = -34

x= -34/-2

x= 34/2

x= 17

3 0
3 years ago
Suppose it is known that 60% of radio listeners at a particular college are smokers. A sample of 500 students from the college i
vladimir1956 [14]

Answer:

The probability that at least 280 of these students are smokers is 0.9664.

Step-by-step explanation:

Let the random variable <em>X</em> be defined as the number of students at a particular college who are smokers

The random variable <em>X</em> follows a Binomial distribution with parameters n = 500 and p = 0.60.

But the sample selected is too large and the probability of success is close to 0.50.

So a Normal approximation to binomial can be applied to approximate the distribution of X if the following conditions are satisfied:

1. np ≥ 10

2. n(1 - p) ≥ 10

Check the conditions as follows:

 np=500\times 0.60=300>10\\n(1-p)=500\times(1-0.60)=200>10

Thus, a Normal approximation to binomial can be applied.

So,  

X\sim N(\mu=600, \sigma=\sqrt{120})

Compute the probability that at least 280 of these students are smokers as follows:

Apply continuity correction:

P (X ≥ 280) = P (X > 280 + 0.50)

                   = P (X > 280.50)

                   =P(\frac{X-\mu}{\sigma}>\frac{280-300}{\sqrt{120}}\\=P(Z>-1.83)\\=P(Z

*Use a <em>z</em>-table for the probability.

Thus, the probability that at least 280 of these students are smokers is 0.9664.

8 0
2 years ago
Please answer the question in the picture!
Sliva [168]
Answer will be option 2nd.

S(-4,7), T(-7,0), U(-1,0)
4 0
2 years ago
5x + 2(x + 7) = 14x – 7.i will mark brainliest
Temka [501]

Answer:

5x +2x+14 =14x-7

7x+14=14x-7

14+7=14x-7x

21 divide bye 7=7x divide bye 7

3=x

Step-by-step explanation:

3 0
3 years ago
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