Imagine in your mind that a fair 20-sided die, with faces labled 1,2,3, . . ., 20, is rolled ten times. What is the expected value of the sum of the rolls? A. 20

B. 60

C. 100

D. 105

P. S: This isn't part of the problem but put this link in. https://youtu. be/ub82Xb1C8os

answer: a and b

step-by-step explanation:

step-by-step explanation:

i have done this all on a piece of paper but idk how to put it on here cuz it needs to be drawn

start with a line segment pq that we will copy. mark a point r that will be one endpoint of the new line segment. set the compasses' point on the point p of the line segment to be copied. adjust the compasses' width to the point q. the compasses' width is now equal to the length of the line segment pq.

step-by-step explanation:

let x be the money she spent so that she can earn the free t-shirt.

since, she already spent $112.49

⇒

also, as per the statement: jennifer must spend $250 or more in order to qualify for a free t-shirt at the store.

then,

we have an inequality i.,e

subtract 112.49 from both sides we get;

therefore, $137. 51 more money does jennifer need to spend so that she can earn the free t-shirt