Answer:
4
Step-by-step explanation:
The sum to n terms of a geometric sequence is
= 
where a is the first term and r the common ratio
Here r = 5 and a has to be found, thus
= 
, so
= 15624
Multiply both sides by 4
15624a = 62496 ( divide both sides by 15624
a = 4
Answer:
The level of significance is the
b. maximum allowable probability of Type I error.
Step-by-step explanation:
The significance level provides the maximum probability of rejecting the null hypothesis when it is true. It is the same as a type I error (also known as false-positive). This error occurs when a researcher or investigator rejects a true null hypothesis that is supposed to be accepted. It is the opposite of a type II error (false-negative), which occurs when the researcher fails to reject a false null hypothesis.
The height of the rectangular prism is 6
Option D: 140° is the right answer
Step-by-step explanation:
In the given figure, a traversal is intersecting two parallel lines.
When two parallel lines are intersected by a traversal 8 angles are formed.
Corresponding angles:
Corresponding angles have same relative position when two parallel lines are intersected by a traversal So in the given figure the corresponding angles are:
m∠1 and m∠5
m∠2 and m∠6
When two parallel lines are intersected by a traversal, the corresponding angles are equal
So,
m∠1 = m∠5
m∠5 = 140°
Hence,
Option D: 140° is the right answer
Keywords: Traversal, parallel lines
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