Solve the system using elimination. 4 x - 7y = 3
x = 7y = -15.
A. the ordered pair (negative 12 over 5, 10 over 7)
B. the ordered pair (-1, 2)
C. the ordered pair (6, 3)
D. the ordered pair (1, one-seventh)

Which statement is true about a number and its additive inverse? a. their product is always one. b. their sum is always one. c. they are always reciprocals of each other. d. their sum is always zero.

The thickness of photoresist applied to wafers in semiconductor manufacturing at a particular location on the wafer is uniformly distributed between 0.2070 and 0.2171 micrometers.(a) determine the proportion of wafers that exceeds 0.2125 micrometers of photoresist thickness. (round your answer to 3 decimal places.)enter your answer in accordance to the item a) of the question statement(b) determine the mean of x. (round your answer to 4 decimal places.)enter your answer in accordance to the item b) of the question statement micrometers(c) determine the variance of x. (round your answer to 8 decimal places.)enter your answer in accordance to the item c) of the question statement micrometers2

The area of the rectangle shown is 2x^2-x-15 square units. what is the width of the rectangle?