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4 years ago

Can someone help me please fast

Biology

2 answers:

Katena32 [7]4 years ago

6 0

I'm pretty sure it's B).Cold air sinks, warm air rises. Because heat rises & you'll notice it's colder in the basement than in the attic.

Ratling [72]4 years ago

6 0

It’s definitely B
Have a nice day! ;)

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Explanation:

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3 years ago

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bija089 [108]

Answer:

R = 16mm/y

Explanation:

Modern Spreading Rate (R) = distance the seafloor moved in km (d) / age in million years (t)

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To calculate it in millimeters per year we need to convert it:

1 km = 1000 m

1 m = 100 cm

1cm = 10mm

1 km = 1,000,000 mm

The problem states that in 150 million years, there is a distance of 2400 km.

if 1 km ------- 1,000,000 mm

2400 km-------X = 2400,000,000 mm

If 1 million years -------1,000,000 years

150 my----X = 150,000,000 years

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R = 16mm/y

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3 years ago

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A swine producer wants to know if the average weight of his pigs is different from the breed average of 230 lb. He selects a ran

Aloiza [94]

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Let $\mu$ be the population mean weight of pigs.

As per given , we have

$H_0:\mu=230$

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Hence, the value of the test statistic needed to test the null hypothesis : t= -1.60

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3 years ago