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2 years ago

Simplify the expression by combining like terms. 16+8−3+6−9

Mathematics

2 answers:

iragen [17]2 years ago

8 0

Answer:

Step-by-step explanation:

16+8−3+6−9 = (16+8+6) + (-3 -9)

= 30 + (-12)

= 18

If two numbers have opposite sign, subtract and put the bigger number sign for the result

NNADVOKAT [17]2 years ago

6 0

I believed the answer is 18

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3 years ago

0.037 in scientific notation

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$\huge\boxed{3.7\ \times\ 10^{-2}}$

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3 years ago

Atown uses positive numbers to track increases in population and negative numbers to track decreases in population.

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-60

Step-by-step explanation:

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2 years ago

Annual starting salaries for college graduates with degrees in business administration are generally expected to be between $30,

REY [17]

Answer:

a) 217

b) 1351

c) 5403

Step-by-step explanation:

Given that:

confidence interval (c) = 0.95

$\alpha =1-0.95=0.05\\\frac{\alpha }{2} =\frac{0.05}{2}=0.025$

The Z score of $\frac{\alpha }{2}$ is from the z table is given as:

$Z_{\frac{\alpha }{2} }=Z_{0.025}=1.96$

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The standard deviation (σ) is given as:

$\sigma=\frac{Range}{4} =\frac{15000}{4}=3750$

Sample size (n) is given as:

$n=(\frac{Z_{\frac{\alpha}{2} }\sigma}{E} )^2$

a) E = $500

$n=(\frac{Z_{\frac{\alpha}{2} }\sigma}{E} )^2= (\frac{1.96*3750}{500} )^2$ ≈ 217

b) $n=(\frac{Z_{\frac{\alpha}{2} }\sigma}{E} )^2= (\frac{1.96*3750}{200} )^2$ ≈ 1351

c) $n=(\frac{Z_{\frac{\alpha}{2} }\sigma}{E} )^2= (\frac{1.96*3750}{100} )^2$ ≈ 5403

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3 years ago

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