Questions in Grade High-school

Questions in Grade High-school

[Homework Help] An archaeologist discovered some charcoal at an excavation site. He sent the samples to a lab for C-14 dating, knowing that the half-life of C-14 is approximately 5,600 years. The lab reported that the charcoal had 1/8 the amount of C-14 in it that a living sample would have. How many years old was the charcoal? A. 700 years B. 1,867 years C. 8,400 years D. 16,800 years E. 44,800 years

[Homework Help] A pair of jeans regularly sells for $24.00. They are on sale for 25% off. What is the sale price of the jeans?

[Homework Help] ABCD is a square with a side length of 3. E and F are the midpoints of sides AB and BC, respectively. What is the area of the quadrilateral EBFD?

[Homework Help] The half-life of thorium-227 is 18.72 days. How many days are required for three-fourths of a given amount to decay?

[Homework Help] The length of a rectangular mural is 2 ft more than three times the width. The area is 165 sq. ft. Find the width and length.

[Homework Help] O is the center of the circle. Assume that lines that appear to be tangent are tangent. What is the value of x?

[Homework Help] There are 5 performers who will present their comedy acts this weekend at a comedy club. One of the performers insists on being the first stand-up comedy act of the evening. If this performer's request is granted, how many different ways are there to schedule the appearances?

[Homework Help] If all of the forces acting on an object balance so that the net force is zero, then: A. the object must be at rest B. the object’s speed will decrease C. the object will follow a parabolic trajectory D. the object’s direction of motion can change, but its speed cannot E. None of the above

[Homework Help] What is [tex]49[/tex] to the power of [tex]\frac{1}{2}[/tex]?

[Homework Help] Which Enlightenment thinker believed that it is a government's job to protect the natural rights of life, liberty, and property?