Anews report states that a new hydroelectric generating station in quebec will produce 140 terajoules of power per year (tj/a) and that this power, for 20 years of operation, is equivalent to 2.0 million barrels of oil. using these figures, how many gigajoules is each barrel of oil equivalent to?

The sat and act tests use very different grading scales. the sat math scores follow a normal distribution with mean 518 and standard deviation of 118. the act math scores follow a normal distribution with mean 20.7 and standard deviation of 5. suppose regan scores a 754 on the math portion of the sat. how much would her sister veronica need to score on the math portion of the act to meet or beat regan's score?

Clarence wants to buy a new car. he finds an ad for a car that costs 27,200 dollars. suppose his local sales tax is 7%. -how much would he have to pay? -what is the cost of the car including tax? -if clarence has 29,864 saved, can he pay cash to buy the car?

If you prove that ∆wxz is congruent to ∆yzx, which general statement best describes what you have proved?