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Fittoniya [83]
3 years ago
12

An angle that measures exactly 180° is known as a/an angle.

Mathematics
1 answer:
slavikrds [6]3 years ago
7 0

Answer:

supplementary angle

Step-by-step explanation:

please Mark my answer in brainlist

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What type of number is<br> -15/3
Oduvanchick [21]

Answer:

Rational

Step-by-step explanation:

Rational numbers can be reduced to a fraction

Irrational numbers cannot be reduced to a fraction

Whole numbers are positive numbers that are not decimal or fraction

Integers are all numbers that are not decimal or fraction

6 0
3 years ago
A study is conducted to determine if a newly designed text book is more helpful to learning the material than the old edition. T
Oksanka [162]

Answer:

The null and alternative hypotheses are:

H_{0}:\mu=75

H_{a} : \mu>75

Under the null hypothesis, the test statistic is:

t=\frac{\bar{x}-\mu}{\frac{s}{\sqrt{n}} }

Where:

\bar{x} =83 is the sample mean

s=9.8206 is the sample standard deviation

n=10 is the sample size

\therefore t= \frac{83-75}{\frac{9.8206}{\sqrt{10}} }

         =2.58

Now, we can find the right tailed t critical value at 0.01 significance level for df = n-1 = 10 - 1 = 9 using the t distribution table. The t critical value is given below:

t_{critical} =2.821

Since the test statistic is less than the t critical value, we therefore, fail to reject the null hypothesis and conclude that there is not sufficient evidence to support the claim that the people do better with the new edition.

7 0
3 years ago
Identify the 42nd term of an arithmetic sequence where a1 = -12 and a27 = 66
Dmitry_Shevchenko [17]
The arithmetic formula is expressed as an = a1 + d *(n-1)where n is an integer. Substituting from the given a1 = -12 and a27 = 66, 66 = -12 + d *(27-1). hence  , d is equal to 3. a42 thus using the formula is equal to 111. The final answer to this problem is 111.
7 0
3 years ago
Read 2 more answers
What is the difference between independent and conditional probability? Which one requires the use of the Addition Rule? Explain
ch4aika [34]

Answer:

Conditional probability is probability of a second event given a first event has already occurred.

Step-by-step explanation:

6 0
3 years ago
Ashley car insurance cost $115 per month, how much does it cost per year
8090 [49]

Answer:1380

Step-by-step explanation:

its because theres 12 months in a year and its 115 dollar and 115x12 is 1380

3 0
4 years ago
Read 2 more answers
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