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Anton [14]
2 years ago
5

Question: which angles are vertical angles?

Mathematics
2 answers:
liraira [26]2 years ago
7 0

6 and 7 are vertical.

5 and 8 are vertical.

Gwar [14]2 years ago
5 0

Answer:

<AOD, <BOC And <DOC ,<AOB

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Brainliest for you if you answer!
eduard

<u>To find the constant of proportionality:</u>

  ⇒ must define constant of proportionality

    ⇒ <em>Constant of Proportionality:  ratio of two proportional values at a </em>

       constant value

       ⇒ (in this case) two proportional values are x and y

<u>The ratio between x and y is equal to</u>

  \frac{y}{x} =\frac{66}{1.2}=55

<u>Answer:</u> <u>55</u> or <u>Choice 1</u>

<u></u>

Hope that helps!

7 0
2 years ago
5 1/2 by 4 3/4 by 1/4 scale it down by 1/10
TiliK225 [7]

Answer:

(11/20 by 19/40 by 1/40) OR (0.55 by 0.475 by 0.025)

Step-by-step explanation:

To scale down a set of measurements, simply multiply the original measurement by the factors you're scaling it by. For example, take the first measurement of 5 1/2. To scale this down, I turned the value into an improper fraction (11/2) to make the multiplication process easier. Then, I multiplied 11/2 by the factor of 1/10.

After that, I got 11/20, which is the new first measurement.

7 0
3 years ago
A national survey of companies included a question that asked whether the company had at least one bilingual telephone operator.
nirvana33 [79]

Answer:

The first option is correct. Option A is correct.

LCL = 0.270, and UCL = 0.397

80% Confidence interval = (0.270, 0.397)

Step-by-step explanation:

The data for Y and N for the 90 companies is attached to this solution provided.

Y represents companies with at least 1 bilingual operator and N represents companies with no bilingual operator.

The number of Y in the data = 30

Hence, sample proportion of companies with at least one bilingual operator = (30/90) = 0.3333

Confidence Interval for the population proportion is basically an interval of range of values where the true population proportion can be found with a certain level of confidence.

Mathematically,

Confidence Interval = (Sample proportion) ± (Margin of error)

Sample proportion = 0.3333

Margin of Error is the width of the confidence interval about the mean.

It is given mathematically as,

Margin of Error = (Critical value) × (standard Error)

Critical value at 80% confidence level for sample size of 90 is obtained from the z-tables.

Critical value = 1.280

Standard error of the mean = σₓ = √[p(1-p)/n]

p = sample proportion

n = sample size = 90

σₓ = √[0.3333×0.6667)/90] = 0.0496891568 = 0.04969

80% Confidence Interval = (Sample proportion) ± [(Critical value) × (standard Error)]

CI = 0.3333 ± (1.28 × 0.04969)

CI = 0.3333 ± 0.0636021207

80% CI = (0.2696978793, 0.3969021207)

80% Confidence interval = (0.270, 0.397)

Hope this Helps!!!

3 0
3 years ago
Malia is on a road trip. During the first five minutes of Malia's trips he sees 18 cars and 6 trucks. Assuming this ratio of car
Colt1911 [192]
If you divide 18 and 6 you will get three so three times 1254 equals 3,762 card that he saw
6 0
3 years ago
Read 2 more answers
PLEASE HELP ME!!!
Taya2010 [7]
A: (450>/10)+5
B: 44 Students
6 0
3 years ago
Read 2 more answers
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