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laila [671]
2 years ago
15

Fiona drew a regular polygon that first maps directly onto itself after rotating 15 degrees. How many sides does the polygon hav

e? 12 15 24 48
Mathematics
1 answer:
AlexFokin [52]2 years ago
5 0

Answer:

24

Step-by-step explanation:

Let n = number of sides

15n = 360

divide both sides of the equation by 15

n = 24

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&lt;4 and 45 are alternate interior<br> angles. Find the measure of 4
xenn [34]

Answer:

115%

Step-by-step explanation:

5 is completely irrelevant, Vertical angles are congruent.

8 0
3 years ago
A blue whale, the largest mammal in the world, weighs 1.36 * 105 kilograms as an adult. An adult killer whale weighs about 4 * 1
sergejj [24]

Answer:

(1.36 × 10^{5}) - (4 × 10^{3}) = 132000kg

1.32 × 10^{5} kg = 1320000

7 0
2 years ago
Please help I will reward brainliest
ollegr [7]

Answer:

Straight Angle

Explanation:

Def: An obtuse angle is an angle whose measure is greater than 90 degrees but less than 180 degrees. Def: A straight angle is an angle whose measure is exactly 180 degrees. Def: Two angles are congruent if their measures are exactly the same. Def: Two angles are complementary if their measures add up to 90 degrees.

6 0
3 years ago
You plan to conduct a marketing experiment in which students are to taste one of two different brands of soft drink. Their task
Talja [164]

Answer:

the probability is 90% that the sample percentage is contained within 45.5% and 54.5% symmetric limits of the population percentage.

Step-by-step explanation:

From the given information:

Sample size n = 200

The standard deviation for a sampling distribution for two brands are equally likely because the individual has no ability to discriminate between the two soft drinks.

∴

The population proportion p_o = 1/2 = 0.5

NOW;

\sigma _p = \sqrt{\dfrac{p_o(1-p_o)}{n}}

\sigma _p = \sqrt{\dfrac{0.5(1-0.5)}{200}}

\sigma _p = \sqrt{\dfrac{0.5(0.5)}{200}}

\sigma _p = \sqrt{\dfrac{0.25}{200}}

\sigma _p = \sqrt{0.00125}

\sigma _p = 0.035355

However, in order to determine the symmetrical limits of the population percentage given that the z probability is 90%.

we use the Excel function as computed as follows in order to determine the z probability  = NORMSINV (0.9)

z value = 1.281552

Now the symmetrical limits of the population percentage can be determined as: ( 1.28, -1.28)

1.28 = \dfrac{X - 0.5}{0.035355}

1.28 × 0.035355 = X - 0.5

0.0452544= X - 0.5

0.0452544 + 0.5 = X

0.5452544 = X

X \approx 0.545

X = 54.5%

-1.28 = \dfrac{X - 0.5}{0.035355}

- 1.28 × 0.035355 = X - 0.5

- 0.0452544= X - 0.5

- 0.0452544 + 0.5 = X

0.4547456 = X

X \approx 0.455

X = 45.5%

Therefore , we can conclude that the probability is 90% that the sample percentage is contained within 45.5% and 54.5% symmetric limits of the population percentage.

7 0
2 years ago
What is 4/10 + 55/100
erastovalidia [21]
Explain: 4/10 into decimal is .40
100/55 into decimal is .55
.40 + .55 = .95
Explain: 4/10 and 55/100
40/10 and 55/100

Answer: decimal .95
Fraction 95/100 or 19/50
4 0
3 years ago
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