3 years ago

What is the value of the expression shown below?

Mathematics

1 answer:

faltersainse [42]3 years ago

5 0

Answer:

It should be

Step-by-step explanation:

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What is the discriminant: 2x^2 + 3x + 10=0

ohaa [14]

The discriminant of a quadratic equation is:

$b^2-4ac$

Plug in the values.

$3^2-4(2)(10)$

$=9-80$

$=-71$

Since the discriminant is negative, you can tell that the quadratic has no real solutions.

Hope that helped!

~Cam943, Moderator

6 0

3 years ago

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At least one of the numbers must be 0.<br><br> 1. none<br> 2. Hypothesis<br> 3. Conclusion

iragen [17]

Answer:

The answer is 1.) None

Step-by-step explanation:

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A school wishes to accept 2000 students for their freshman class, and they expect 20,000 applications. In order to make their ad

vovangra [49]

Answer:

456

Step-by-step explanation:

Let X be the SATscore scored by the students

Given that X is normal (1000,200)

By converting into standard normal variate we can say that

$z=\frac{x-1000}{200}$ is N(0,1)

To find the top 10% we consider the 90th percentile for z score

Z 90th percentile = 1.28

$X= 200+1.28(200)\\= 200+256\\=456$

i.e. only students who scored 456 or above only should be considered.

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3 years ago

Solve each proportion 3/39= y/13

Sphinxa [80]

Answer:

$y = 1$

Step-by-step explanation:

$\frac{3}{39} = \frac{y}{13}$

Cross multiply

$39 = 39y$

Divide by 39

$y = 1$

6 0

3 years ago

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What is the missing number? I’ll mark brainly

ad-work [718]

Answer:

I think it is 4

I am not sure about it

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