<h3>There is only one way to score an 18, because all the questions need to score a three, but with 17, any of the questions can score a 2, but only one, the rest must still score a three. there are six ways because there are six questions. it is only a matter of choosing which one. Similarly with 16, but a little more complicated. the ways to get a 16 are, get a two on two questions, or get a one on one question. the ways to get a one are the same as the ways in getting 17, six ways. the ways to get a two on two is to take the six questions and choose the two that receive a two. that is 6 choose 2, or 15 ways so, a student can get a 16 on the test 15+6=21 ways.</h3>
Formula for number of sides, n = 360 / e
Where e is the exterior angle for the number of sides.
e = 21.2°
Number of sides for the regular polygon, n = 360° / 21.2°
n ≈ 16.98
The number of sides is approximately 16.98 sides..Does that make sense?
It does not. In fact, the exterior angle of a regular polygon has to be wholly divisible into 360°.
In the case 21.2° can't clearly be the exterior angle, the question is wrongly set.
The exterior can be say 20°.
The answer is x=14.......
Answer:
-50 feet
Step-by-step explanation:
The trout is swimming 30 ft below sea level,if it were above sea level it would be positive but since its below it is negative. It then swims 20 feet lower so it would be -50 as a short cut you can use in problems like this one is to ignore the sign's and add it regularly then add the sign after the equation is done.
Answer:
The original price was $43.50
Step-by-step explanation:
Let
x ----> the original price of a video game
we know that
1) The price of a video game increases by 20%
so
The final price is equal to the original price multiplied by 1.20
so
2) The price of a video game decreases by 10%
so
The final price is equal to the price at this moment multiplied by 0.90
so
we have that
solve for x