the solution is x=-13 it wad really easy just do 2+2 and +9
Answer: 0.02
Step-by-step explanation:
Given: Sample size :
The population proportion
Then,
The formula to calculate the standard error is given by :-
Hence, the standard deviation of the sample proportions (i.e., the standard error of the proportion) is <u>0.02</u>.
Answer:
0.256 * 10⁻⁵
Step-by-step explanation:
Probability of picking any answer out of 5 given options = 1/5
Total probability for 8 questions = (1/5)⁸ = 0.00000256
= 0.256 * 10⁻⁵
Eighty-three point four hundred and ninety-seven thousandths. Hope this helps!
Answer:
40 degrees
Step-by-step explanation:
A triangle solver tool can find the angle easily. It is 39.8°, which rounds to 40°. Apps are available on some calculators, on the Internet, and for iOS and Android phones and tablets.
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You may be expected to solve this using the Law of Cosines. If we name the sides ...
the law of cosines tells us the relationship is ...
c² = a² + b² -2ab·cos(θ)
Then the angle is ...
θ = arccos((a² +b² -c²)/(2ab)) = arccos((3.0625 +9 -4)/(2·1.75·3))
= arccos(8.0625/10.5) ≈ 39.838° ≈ 40°