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jolli1 [7]
2 years ago
9

Pleas help me find the area of this compound shape I will give you loads of points

Mathematics
2 answers:
worty [1.4K]2 years ago
4 0

Answer:

62

Step-by-step explanation:

4*7 = 28

(14 - 1 - 4) * (7 - 4) = 27

1 * 7 = 7

7 + 28 + 27 = 62

choli [55]2 years ago
4 0

Answer: 62m^2

Step-by-step explanation:

total area = (7 * 4) + ( 1 * 7 ) + ( 9 * 3 ) = 62m^2

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What is the solution of x=2+√x-2 ?
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C. \: x = 2 \: or \: x = 3
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3 years ago
A researcher wants to see if birds that build larger nests lay larger eggs. He selects two random samples of nests: one of small
True [87]

Answer:

95% confidence interval for the difference between the average mass of eggs in small and large nest is between a lower limit of 0.81 and an upper limit of 2.39.

Step-by-step explanation:

Confidence interval is given by mean +/- margin of error (E)

Eggs from small nest

Sample size (n1) = 60

Mean = 37.2

Sample variance = 24.7

Eggs from large nest

Sample size (n2) = 159

Mean = 35.6

Sample variance = 39

Pooled variance = [(60-1)24.7 + (159-1)39] ÷ (60+159-2) = 7619.3 ÷ 217 = 35.11

Standard deviation = sqrt(pooled variance) = sqrt(35.11) = 5.93

Difference in mean = 37.2 - 35.6 = 1.6

Degree of freedom = n1+n2 - 2 = 60+159-2 = 217

Confidence level = 95%

Critical value (t) corresponding to 217 degrees of freedom and 95% confidence level is 1.97132

E = t×sd/√(n1+n2) = 1.97132×5.93/√219 = 0.79

Lower limit = mean - E = 1.6 - 0.79 = 0.81

Upper limit = mean + E = 1.6 + 0.79 = 2.39

95% confidence interval for the difference in average mass is (0.81, 2.39)

3 0
3 years ago
Data set is normally distributed with a mean of 27 and a standard deviation of 3.5. Find the Z-score for a value of 25, to the n
Svetradugi [14.3K]

What is the standard deviation of the data set?

6, 4, 9, 5, 5, 4, 5

Round the answer to the tenths place.What is the standard deviation of the data set?

6, 4, 9, 5, 5, 4, 5

Round the answer to the tenths place.

Step-by-step explanation:

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3 0
2 years ago
Read 2 more answers
Marcus sorts his 85 baseballs cards into stacks of 9 each. How many stacks of 9 cards can marcus make
PSYCHO15rus [73]

Answer:

He can only make 9

Step-by-step explanation:

He will have 4 cards left over so it will not be enough to make another stack.

5 0
3 years ago
Read 2 more answers
I need to know the answer
makkiz [27]

Step-by-step explanation:

3k + 2k - 6 = 8k + 3

8k - 3k - 2k = - 6 - 3

8k - 5k = -9

3k = - 9

k = - 9/ 3

K = - 3

Hope it will help you :)

3 0
3 years ago
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