Segment yw is an altitude of triangle xyz. find the area of the triangle. z=(5,4), w=(5,-1), y=(8,-1), x=(5,-3)
a)7.5
b)9.5
c)10.5
d)15

What is the common difference in the following arithmetic sequence 7,3,-1,-5

Ineed solving this problem h/8=-25 solve for h idk how to this can someone show me and also give an answer you

The average human heart beats 1.15 \cdot 10^51.15⋅10 5 1, point, 15, dot, 10, start superscript, 5, end superscript times per day. there are 3.65 \cdot 10^23.65⋅10 2 3, point, 65, dot, 10, start superscript, 2, end superscript days in one year. how many times does the heart beat in one year? write your answer in scientific notation, and round to one decimal place.