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3 years ago

Can someone please help me with this ( -1) + (+8)

Mathematics

2 answers:

kupik [55]3 years ago

8 0

Answer:

Step-by-step explanation:

(+)(+) = (+)

(-)(+) = (+)(-) = (-)

(-)(-) = (+)

--------------------------------------------

(-1) + (+8)= (-1) + 8 <em>use the commutative property a + b = b + a</em>

= 8 + (-1) = 8 - 1 = 7

vodka [1.7K]3 years ago

3 0

Answer:

it’s kind of like 8-1 but it’s 8+(-1)

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Answer:

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3 years ago

A farmer outside of Clinton NC plants 20 plots of a new type of corn. The average yield for these plots is ī= 150 bushels per ac

bogdanovich [222]

Answer:

The 95% confidence interval is $(150\pm 8.8)$ .

Step-by-step explanation:

The information provided is:

$\bar x=150\\\sigma = 20\\n=20$

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$z_{\alpha/2}=z_{0.05/2}=z_{0.025}=1.96$

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3 years ago

Upper and lower quartile? What do they mean?

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3 years ago

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Answer:

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Step-by-step explanation:

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3 years ago

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Answer:

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2 years ago

Read 2 more answers