Bridget started solving the equation below. Which of the following would be a correct next step to solving the equation? -2(3 + 5) + 42 = 3(+1)
- 2x - 10 + 40 = 3x + 3
A Combine like terms by adding -10 and +3
Correct
Incorrect
B Combine like terms by adding -2x and 4x.
Correct
Incorrect
C Add 10 to both sides of the equation.
Correct
Incorrect
D Combine like terms by adding -2x, 4x, and 3x.
Correct
Incorrect

Ihave a 69 and an 82. the 69 is worth 40% of my grade and the 82 is worth 15%. can someone tell me my current average grade.

The following graph shows the consumer price index (cpi) for a fictional country from 1970 to 1980? a.) 1976 - 1978b.) 1972 - 1974c.) 1974 - 1976d.) 1978 - 1980

Afactory makes propeller drive shafts for ships. a quality assurance engineer at the factory needs to estimate the true mean length of the shafts. she randomly selects four drive shafts made at the factory, measures their lengths, and finds their sample mean to be 1000 mm. the lengths are known to follow a normal distribution whose standard deviation is 2 mm. calculate a 95% confidence interval for the true mean length of the shafts. input your answers for the margin of error, lower bound, and upper bound.