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3 years ago

3 3/5x(-8 1/3)=? What is ?

Mathematics

2 answers:

KiRa [710]3 years ago

5 0

Answer:

-30x

Step-by-step explanation:

Tatiana [17]3 years ago

3 0

Answer:

about -29.988

Step-by-step explanation:

3 3/5x(-8 1/3)= -29.988

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12/3 cup chopped nuts
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3 years ago

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Suppose the test scores on an exam show a normal distribution with a mean of 82 and a standard deviation of

Zanzabum

Answer:

a) Between 74 and 90

b) 81.86% of the scores are between 78 and 90

Step-by-step explanation:

a) According to the Empirical Rule, in a normal distribution, 95% of the data are within 2 standard deviations of the mean. Therefore, the range that 95% of the scores fall in is between 82-4(2)=74 and 82+4(2)=90.

b) The percent of scores that are between 78 and 90 is: normalcdf(lower,upper,μ,σ) = normalcdf(78,90,82,4) = 0.8185946784 ≈ 0.8186, or about 81.86% of the scores.

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6.25% tax on a $25 purse

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Answer:

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Step-by-step explanation:

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3 years ago

2x+5-x+10=1x-5+3x what does x=

NARA [144]

The answer for x=20/3

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3 years ago

Which equation is a quadratic model for the data set? Hint: Use a graphing calculator or a spreadsheet program.

Ivahew [28]

The equation that model a quadratic function is: y=0.9673x²-0.8475x+10.4334

Step-by-step explanation:

A quadratic function has the form of ;

f(x) = ax²+bx+c where a, b and c are real numbers and a≠0

For this case, equation y=0.9673x²-0.8475x+10.4334 models a quadratic function where a>0 thus the parabola opens upwards

See attached figure below to visualize the graph

Learn More

Quadratic functions graphs: brainly.com/question/9048896

Keywords : equation, quadratic model, data set, calculator, spreadsheet program.

#LearnwithBrainly

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3 years ago