Mathematics, 25.07.2019 22:30 jasaide15

Natalie was given a 30 question test. for each correct question she answered, she earned 2 points. for every incorrect answer she lost 1 point. her final score was 54 points. the system of equations describes the relationship between the number of questions she answered correctly and the number of questions she answered incorrectly. part of the solution of the equations is y = 2. what does this value represent? x+y=30 2x−y=54 a. the number of questions natalie answered incorrectly b the number of questions natalie answered correctly c. the number of points natalie lost from questions she answered incorrectly d. the number of points natalie earned from questions she answered correctly

Answers: 1

Show answers

Another question on Mathematics

Mathematics, 21.06.2019 12:30

Acable car begins its trip by moving up a hill. as it moves up, it gains elevation at a constant rate of 50 feet/minute until it reaches the peak at 2,000 feet. then, as the car moves down to the hill’s base, its elevation drops at the same rate.

Answers: 1

Answer

Mathematics, 21.06.2019 16:00

While scuba diving, rajeev dove to a depth of 12.6 feet below the surface of the water and then descended another 8.7 feet. what expression can be used to find rajeev's new position? 12.6 – 8.7 –12.6 – 8.7 –12.6 – (–8.7) 12.6 – (–8.7)

Answers: 2

Answer

Mathematics, 21.06.2019 21:30

Data from 2005 for various age groups show that for each $100 increase in the median weekly income for whites, the median weekly income of blacks increases by $105. also, for workers of ages 25 to 54 the median weekly income for whites was $676 and for blacks was $527. (a) let w represent the median weekly income for whites and b the median weekly income for blacks, and write the equation of the line that gives b as a linear function of w. b = (b) when the median weekly income for whites is $760, what does the equation in (a) predict for the median weekly income for blacks?

Answers: 2

Answer

Mathematics, 21.06.2019 23:00

Alex measured the length of an item to be 3.7 cm. the actual length is 3.5 cm. what is alex’s percent error?

Answers: 2

Answer

You know the right answer?

Natalie was given a 30 question test. for each correct question she answered, she earned 2 points. f...

Questions