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castortr0y [4]
3 years ago
14

A sample of 49 observations is taken from a normal population with a standard deviation of 10. the sample mean is 55. determine

the 99% confidence interval for the population mean. (round your answers to 2 decimal places.)
Mathematics
1 answer:
Anna35 [415]3 years ago
3 0
The answer I think is D.
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In triangle Xyz the measure of angle YXZ is 14.5°, and the measure of angle XYZ is 75°. What is the measure of angle XZY in degr
steposvetlana [31]

Answer:

90.5 degrees

Step-by-step explanation:

The sum of the angle in triangle XYZ is 180 degrees, hence;

m<XYZ + m<YXZ + <XZY = 180

Substitute the given angles

75 + 14.5 + <XZY = 180

89.5+m<XZY = 180

m<XZY = 180 - 89.5

m<XZY = 90.5 degrees

Hence the measure of angle XZY in degrees is 90.5 degrees

7 0
2 years ago
??????? Help please please
Alborosie
I am pretty sure you can only make one.
 If two sides are known, and one of the angles, then the other bits can be deduced and are fixed.
6 0
2 years ago
Which ordered pair is a solution of the inequality?
Greeley [361]

Answer:

<h2>d. (3, -11)</h2>

Step-by-step explanation:

y-1

8 0
2 years ago
How to do question five
-BARSIC- [3]
I believe the answer is 46.
Remember "PEMDAS" when doing equations like these :)
8 0
2 years ago
(11-8)x3+7+27-3<br> (18÷3)+6+(14-8)x5<br> (11-7)x6+4+32-4
horsena [70]

The results of the arithmetic evaluations as given in the task content are; 40,42 and 62.

<h3>What are the results of the arithmetic evaluations?</h3>

The arithmetic operations above can be evaluated and simplified as follows;

(11-8)x3+7+27-3 = (3×3)+7+27-3 = 40.

(18÷3)+6+(14-8)x5 = (6)+6+(6)x5 = 42.

(11-7)x6+4+32-4 = (5×6) +4 +32-4 = 62.

Read more on arithmetic evaluations;

brainly.com/question/4694189

#SPJ1

8 0
2 years ago
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