2 years ago

Solve -5 < 4x + 3 < 7.

Mathematics

1 answer:

Sonja [21]2 years ago

4 0

AnswerC

Step-by-step explanation:

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1.<br>Prove that the roots of x^2 + (1 - k).x+k-3 = 0 are real for all real values of k

hammer [34]

Step-by-step explanation:

${x}^{2} + (1 - k)x + k - 3 = 0$

${x}^{2} + x - 3 = 0$

Use the discramnt formula.

${ {b}^{2} - 4ac }$

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3 years ago

Simplify 5 to the negative third power

vagabundo [1.1K]

I don't know if I'm right but I think its -243

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3 years ago

In 2010 the population of alaska was about 710200 what is this number written in word form

Svetradugi [14.3K]

Seven hundred and ten thousand two hundred

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3 years ago

Find the length of the missing side using a trig ratio. Round your answer to the nearest hundredth.

Nimfa-mama [501]

Answer:

x= 33.61 (nearest hundredth)

Step-by-step explanation:

Please see the attached pictures for the full solution.

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3 years ago

What are the degrees of freedom for Student's t distribution when the sample size is 19? d.F. = Use the Student's t distribution

liq [111]

Answer:

a) 18

b) 2.101

Step-by-step explanation:

a) What are the degrees of freedom for Student's t distribution when the sample size is 19?

Degrees of freedom = n - 1

Where n = sample size

= 19 - 1

= 18

b) Use the Student's t distribution to find tc for a 0.95 confidence level when the sample is 19.

(Round your answer to three decimal places.)

We would be determining these using the t distribution table

1 - 0.95 = 0.05 ( for two tailed)

0.05/2 = 0.025(one - tailed)

Hence, the tc(test score) for a 0.95 confidence level when the sample is 19 is 2.101

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4 years ago