In order to be exempt from the semester exam in your math class, i must earn at least an 80% average. the total number of points in your class is 438. last week, i earned 120 points. this week i earned 90 points. how many more points must i earn this week earn at least a b (80% average)?

Thales was an ancient philosopher familiar with similar triangles. one story about him says that he found the height of a pyramid by measuring its shadow and his own shadow at the same time. if the person is 5-ft tall, what is the height of the pyramid in the drawing?

Worth 100 points need the answers asap first row -x^2 2x^2 (x/2)^2 x^2 x is less than 2 x is greater than 2 x is less than or equal to 2 x is greater than or equal to 2 second row -5 -5/2 4 5 •2 is less than x& x is less than 4 •2 is less than or equal to x & x is less than or equal to 4 •2 is less than or equal to x& x is less than 4 •2 is less than x& x is less than or equal to 4

[tex]5 \times1 \frac{12}{13} [/tex] me