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maw [93]
3 years ago
13

2abc-3ab A=2 b=-3 c=4

Mathematics
1 answer:
IRISSAK [1]3 years ago
8 0
2(2)(-3)(4) - 3(2)(-3)

4(-3)(4) - 6(-3)

-12(4) - (-18)

-48 + 18

-30

Whenever there are two minus signs next to each other, your answer should become a positive.  If there is one minus sign and one addition sign, it will stay a negative sign.  If there are two addition signs, the addition sign will stay the same.
(-) (-) = +
(-) (+) = -
(+) (-) = -
(+) (+) = +
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Answer:

H0 : P ≤ 0.12

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Step-by-step explanation:

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The claim is the alternative hypothesis, H1 ; which is to test if more than 12% of trees have been infested.

Hence, the alternative hypothesis will be ;

H1 : P > 0.12

The null hypothesis which is the initial truth is always the opposite of the alternative hypothesis, Therefore, we write our null as ;

The null hypothesis ; H0 : P ≤ 0.12

Therefore, we have :

H0 : P ≤ 0.12

H1 : P > 0.12

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