3 years ago

How many reflectional symmetry does a regular hexagon have

Mathematics

2 answers:

nadezda [96]3 years ago

8 0

The answer is: 6.....

tiny-mole [99]3 years ago

4 0

6... I hope this helped

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Whats (2^–1)^3 with the same base but one exponent??

STatiana [176]

Step-by-step explanation:

$({2}^{ - 1} )^{3}$

${2}^{ - 3}$

........

5 0

4 years ago

PLEASE ANSWER ASAP!!! CORRECT ANSWER PLEASE!!!

Elden [556K]

To find a perpendicular line, the slope is opposite reciprocal. The slope would be -4x.
Put in point slope form:
y - 7 = -4(x - 2)
y - 7 = -4x + 8

y = -4x + 15
(line perpendicular to given equation and goes through the point)

Hope this helps!! :)

5 0

3 years ago

Find slope of the line passing through the points (-6,4) and (4,4)

stealth61 [152]

Answer:

Step-by-step explanation:

(y2-y1)/(x2-x1)= slope

(4-4)/(4-(-6)) = 0

7 0

3 years ago

A random sample of 10 chocolate energy bars of a certain brand has, on average, 230 calories per bar, with a standard deviation

Troyanec [42]

Answer:

The confidence interval for the true mean calorie content is

$215$

Step-by-step explanation:

In this problem we know the mean and standard deviation fo the sample, so we can compute the CI like this:

$\bar{x}-t*s/\sqrt{n}< \mu$

We need to determine t for 10-1=9 degrees of freedom and 99% confidence level. We look up in the t-table and the value for t is 3.2498.

Then we can calculate the limits of the CI:

$\bar{x}-t*s/\sqrt{n}< \mu$

5 0

4 years ago

If the sum of squares for a sample containing 51 items equals 200, what is the standard deviation?

Mashcka [7]

The standard deviation is 1.98. Option A is correct.

The standard deviation formula is given as

$\sigma = \sqrt{\frac{SS}{n} }$

where:

SS is the sum of squares = 200
n is the sample size = 51

Substitute the given parameters into the formula to have:

$\sigma = \sqrt{\frac{200}{51} }\\\sigma = \sqrt{3.922}\\\sigma = 1.980$

Hence the standard deviation is 1.98

Learn more on standard deviation here: brainly.com/question/12402189

7 0

2 years ago