Answer:
93
Step-by-step explanation:
The average is calculated as
average = 
On 3 quizzes
= 73 ( multiply both sides by 3 )
sum = 219
On 4 quizzes, letting x be the score on fourth test
= 78 ( multiply both sides by 4 )
sum + x = 312 , that is
219 + x = 312 ( subtract 219 from both sides )
x = 93
She must score 93 on the next quiz
Answer:
(-1.2, 5)
Step-by-step explanation:
(-1.2, 5) is in Quadrant II. Here x = -1.2 (which lies to the left of the y-axis) and 5 lies above the x-axis.
1/2x(25-7). Difference means to subtract. And then just multiply by 1/2 since it is asking for half.
The answer depends on the weight of each individual bag. Do you know exactly how heavy each of the bags are? Please be more clear in your question.
