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2 years ago

I need explanation for this please

Mathematics

1 answer:

Agata [3.3K]2 years ago

4 0

The picture isn’t clear enough to comprehend

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The opposite of negitive thirty-six

dexar [7]

The opposite of -36 is equal to 36

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3 years ago

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Which descriptions from the list below accurately describe the relationship

slava [35]

Congruent and similar because they have the same measurements.

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2 years ago

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The area of the regular hexagon is 10.4 in.2. a regular hexagon has side lengths of 2 inches and an area of 10.4 inches squared.

VARVARA [1.3K]

Answer:

(b) 1.7 in

Step-by-step explanation:

The area of a regular polygon in terms of perimeter and apothem is given by the formula ...

A = 1/2Pa

For a hexagon, the perimeter is 6 times the side length, so this becomes ...

A = 1/2(6s)a = 3sa . . . . . for side length 's' and apothem 'a'

Solving for the apothem, we find ...

a = A/(3s)

For the given values of area and side length the apothem is ...

a = 10.4/(3·2) = 1.733... ≈ 1.7 . . . inches

The apothem, rounded to tenths, is 1.7 inches.

5 0

2 years ago

Please help me as I need this by today

sdas [7]

The system shown at the right has no solution, as the grahs never intersect.
On the other hand, the line and the parab. at the left do intersect, and the points of intersection are (-3,0) and (6,6).

6 0

3 years ago

In a random sample of 8 people, the mean commute time to work was 33.5 minutes and the standard deviation was 7.2 minutes. A 95

Elina [12.6K]

Answer: Margin of error = 6.58

Confidence interval = (26.91, 40.08)

Step-by-step explanation:

Since we have given that

Sample size n = 8

Sample mean = 33.5 minutes

Population standard deviation = 9.5 minutes

At 95% confidence interval,

α = 0.05

t = 1.96

So, Margin of error is given by

$t\times \dfrac{\sigma}{\sqrt{n}}\\\\=1.96\times \dfrac{9.5}{\sqrt{8}}\\\\=6.58$

Confidence interval would be

Lower limit:

$\bar{x}-6.58\\\\=33.5-6.58\\\\=26.91$

Upper limit:

$\bar{x}+6.58\\\\=33.5+6.58\\\\=40.08$

Hence, the interval would be (26.91, 40.08)

But at standard deviation 7.2 minutes, the confidence interval was (27.5, 39.5)

Confidence interval using the standard normal distribution is wider than the confidence interval using t distribution.

3 0

3 years ago