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mart [117]
3 years ago
6

Can someone please help me?the question is in the picture. Thank you

Mathematics
1 answer:
kaheart [24]3 years ago
8 0

Answer:

B

Step-by-step explanation:

The two triangles are congruent because they have three rispective side congruent

AB and AD are both radiuses and AC is in common

so m arc BC is 78 degrees

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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
2 years ago
List 3 values that would make this inequality true 48 < 6n​
icang [17]

Answer:

Step-by-step explanation:

Turn the question around so it is easier to see.The open end is closest to n.

6n>48          Divide by 6

6n/6>48/6

n > 8

So all you have to do is choose 3 values greater than 8

How about 9,10,11

4 0
2 years ago
Subtract 16a+3 from 13a−5
AleksAgata [21]

Answer: -3a - 8

Step-by-step explanation:

(13 a - 5 ) - (16a + 3) = 13 a - 5 - 16a - 3 = -3a -8

5 0
3 years ago
Read 2 more answers
Brett bought 7.95 pounds of potatoes and 0.83 pounds of carrots. How many pounds of vegetables did he buy in all?
ycow [4]

Answer: 8.78

Step-by-step explanation:

Because both potatoes and carrots can be classified as vegetables, this problem is simple addition of 7.95 and 0.83, or 8.78.

Hope it helps :)

4 0
2 years ago
What is the answer to -105=-5g
andriy [413]

Divide both sides of -105=-5g by -5.  You'll get g = -105 / (-5), or g = 21.

4 0
2 years ago
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