Answer:
89
Step-by-step explanation:
Given that the class has 28 students has 7 juniors and 21 seniors
mean score of the juniors = 73
Therefore, total score of junior = 73 × 7
= 511
mean score of seniors = y
Total score of seniors = 21y
Total score of the class = 511 + 21y
Mean score of the class = 85
Total score of the class = 85 × 28
= 2380
therefore,
511 + 21y = 2380
21y = 2380 -511
21y = 1869
y = 1869/21
y = 89
Answers:
1) B: 4
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2) D: (5,2) .
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3) D: (-2, -10).
There are 3628800 ways<span> to </span>arrange<span> those </span>letters<span>.</span>
Time that will be taken at speed of 45 miles/hr is 1.8 hrs
Step-by-step explanation:
- Step 1: Given the speed of the journey = 54 miles/hr and time = 1.5 hours. Find the distance of the journey using the speed formula.
Distance = Speed × Time
= 54 × 1.5 = 81 miles
- Step 2: Calculate the time taken for this journey given speed = 45 miles/hr
TIme = Distance/Speed
= 81/45 = 1.8 hrs
Answer:
No, it is not a function.
Step-by-step explanation:
