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3 years ago

2x-1/4 + x/3 = 2 Solve the equation

Mathematics

1 answer:

Marta_Voda [28]3 years ago

7 0

Answer:

below

Step-by-step explanation:

steps are shown above

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Determine how many solutions the system has.

ch4aika [34]

One solution could you give me the quizzes code

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3 years ago

Multiply. (3x²+4y+2)

Citrus2011 [14]

Answer:

9x+4y+2

Step-by-step explanation:

3x^2+4y+2

3x^2 = 3x*3= 9x

9x+4y+2

So the answer is 9x+4y+2

7 0

3 years ago

Choose if the following function is even, odd or neither. f(x) = x^3

Semmy [17]

Its neither but i will go with odd

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3 years ago

A market surveyor wishes to know how many energy drinks teenagers drink each week. They want to construct a 80% confidence inter

jasenka [17]

Answer:

The 80% confidence interval for the mean

(4.6199 , 4.7801)

Step-by-step explanation:

Explanation:-

Assuming that the population standard deviation for the number of energy drinks consumed each week is 1

Given the Population standard deviation 'σ' = 1

The study found that for a sample of 256 teenagers the mean number of energy drinks consumed per week is 4.7

given sample size 'n' = 256

mean of the sample 'x⁻' = 4.7

confidence interval for the mean

The 80% confidence interval for the mean is determined by

$(x^{-} -Z_{\alpha } \frac{S.D}{\sqrt{n} } , x^{-} + Z_{\alpha }\frac{S.D}{\sqrt{n} } )$

the z-score of 80% level of significance = 1.282

$(4.7 - 1.282\frac{1}{\sqrt{256} } , 4.7 + 1.282\frac{1}{\sqrt{256} } )$

(4.7 - 0.0801 , 4.7 +0.0801)

(4.6199 , 4.7801)

Conclusion:-

The 80% confidence interval for the mean

(4.6199 , 4.7801)

7 0

4 years ago

what are the possible numbers of positive real, negative real and complex zeros of f(x)=4x^3+x^2+10x-14

adoni [48]

Answer:

Positive real 1

Negative real 0

Complex 2

Step-by-step explanation:

∵ 4x³ + x² + 10x - 14 = 0 is third degree

∴ It has three roots:

1 positive real root

2 conjugate complex roots

6 0

3 years ago