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2 years ago

Is -2 natural number?

Mathematics

2 answers:

Pachacha [2.7K]2 years ago

8 0

Answer:

No, natural numbers cannot be negative.

Step-by-step explanation:

IgorLugansk [536]2 years ago

3 0

Answer:

yes

Step-by-step explanation:

The natural numbers always include the positive integers, but may or may not include zero depending on the author. Whole numbers can be equivalent to the natural numbers using either definition or can be equivalent to the entire set of integers, again depending on the author

Depending on the mathematician, the natural numbers include: 1, 2, 3, 4, 5, . . . (also called the positive integers), or 0, 1, 2, 3, 4, 5, . . . (also called the nonnegative integers or whole numbers)

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Find the exact value of x

VikaD [51]

Answer:

Step-by-step explanation:

"x" is geometric mean

x² = 4 × 16

x² = 64

x = 8

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2 years ago

Rewrite 20/7 as a mixed number

Neko [114]

20/ 7
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2 and 6/7

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2 years ago

Triangle RST is congruent to triangle WXY. If the area of triangle WXY is 20 square inches, then the area of triangle RST is ___

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2 years ago

Read 2 more answers

.In the Star Wars franchise, Yoda stands at only 66 centimeters tall. Suppose you want to see whether or not hobbits from the Lo

r-ruslan [8.4K]

Answer:

We conclude that the average height of hobbit is taller than Yoda.

Step-by-step explanation:

We are given that in the Star Wars franchise, Yoda stands at only 66 centimetres tall.

From a sample of 7 hobbits, you ﬁnd their mean height $\bar X$ = 80 cm with standard deviation s = 10.8 cm.

Let $\mu$ = average height of hobbit.

So, Null Hypothesis, $H_0$ : $\mu$ $\leq$ 66 cm {means that the average height of hobbit is shorter than or equal to Yoda}

Alternate Hypothesis, $H_A$ : $\mu$ > 66 cm {means that the average height of hobbit is taller than Yoda}

The test statistics that would be used here One-sample t test statistics as we don't know about population standard deviation;

T.S. = $\frac{\bar X-\mu}{\frac{s}{\sqrt{n}}}$ ~ $t_n_-_1$

where, $\bar X$ = sample mean height = 80 cm

s = sample standard deviation = 10.8 cm

n = sample of hobbits = 7

So, test statistics = $\frac{80-66}{\frac{10.8}{\sqrt{7}}}$ ~ $t_6$

= 3.429

The value of t test statistics is 3.429.

Now, at 0.01 significance level the t table gives critical value of 3.143 for right-tailed test. Since our test statistics is more than the critical value of t as 3.429 > 3.143, so we have sufficient evidence to reject our null hypothesis as it will fall in the rejection region due to which we reject our null hypothesis.

Therefore, we conclude that the average height of hobbit is taller than Yoda.

3 0

3 years ago

angle A and angle B are complementary angles. If m angle A = (x-16)degrees and m angle B = (3x+28)degrees, then find the measure

Ahat [919]

Answer:

$4x \times 448$