Mathematics, 11.05.2021 18:10 eduardo60
Oliver interviewed 30% of the 9th-grade class and 70% of the 10th-grade class at his school. Jenny interviewed 75% of the 9th-grade class and 25% of the 10th-grade class at the same school. Oliver interviewed a total of 176 students and Jenny interviewed 140 students.
How many more 10th graders than 9th graders were interviewed?
A
36
B
80
C
120
D
200
Answers: 1
Mathematics, 21.06.2019 21:40
Drag the tiles to the correct boxes to complete the pairs. label each function. as even , odd, or neither.
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Mathematics, 22.06.2019 01:00
Arrange the steps to solve this system of linear equations in the correct sequence. x + y = -2 2x – 3y = -9 tiles subtract 3x + 3y = -6 (obtained in step 1) from 2x – 3y = -9 (given) to solve for x. substitute the value of x in the first equation (x + y = -2) to get y = 1. the solution for the system of equations is (-3, 1). x = -15 the solution for the system of equations is (-15, 13). add 3x + 3y = -6 (obtained in step 1) to 2x – 3y = -9 (given), and solve for x. x = -3 substitute the value of x in the first equation (x + y = -2) to get y = 13. multiply the first equation by 3: 3(x + y) = 3(-2) 3x + 3y = -6.
Answers: 1
Oliver interviewed 30% of the 9th-grade class and 70% of the 10th-grade class at his school. Jenny i...
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