With 4 algebra
7. evaluate 1/2a^4b^2 for a = –2 and b = 4. (1 point)
a)2 
b)1/2
c)3
d)4
8. is the following statement always, never, or sometimes true?
a number raised to a negative exponent is negative. (1 point)
a)always
b)never
c)sometimes 
9. simplify (4xy^2)^3(xy)^5 (1 point)
a)64x^8y^11
b)64x^15y^30
c)12x^2y^11
d)12x^8y^11 
10. simplify (2t^3)^3(0.4r)^2 (1 point)
a)3.2r^2
b)1.28r^2/t^-6 
c)1.28r^2/t^9
d)0.8r^2/t^-6

Write an introductory paragraph for this corrie ten boom and her family were faced with some difficult choices after hitler came to power. some family members paid the ultimate price. write a carefully thought-out paper of at least 200 words dealing with the following concepts: --how should a christian act when evil is in power? --what do you think it would be like to live in an occupied country? remember to proofread anything you write thoroughly.

A. the following events are mutually exclusive: living in california and watching american idol. true or false b. the number of patients seen by an outpatient practice is an example of a discrete random variable. true or false c. the law of large numbers states that as the number of times an event experiment is conducted increases, the likelihood of the actual probability of an event approaching the theoretical probability decreases. true or false d. measuring the time it takes for patients to enter the operating room is an example of a continuous random variable. true or false

The diameter of the moon is about 3500 km. approximate the surface area of the moon using the formula for the surface area of a sphere, s = 4πr2. write your answer in scientific notation.