Answer:
8 months
Step-by-step explanation:
Let the number of months of membership be represented by x
Total amount paid = $395
A family swimming pool membership costs $45 per month plus a one-time registration fee of $35.
Hence:
395 = 35 + 45x
We subtract 35 from both sides
395 - 35 = 35 - 35 + 45x
360 = 45x
x = 360/45
x = 8 months
Hence, they have been members for 8 months
Answer: -7 and 4
Step-by-step explanation:
21/16 which simplifies to 1 and 5/16
You get this by making 1 1/2 a mixed number (3/2). To get 3/2 you do: bottom times the side plus the top---2x1=2+1=3. So 3/2
Then you multiply across:
7x3=21
8x2=16
So 21/16 is your answer
Answer:
2x - 8 = 12 has the same solution as 12/x-4 = 2
Step-by-step explanation:
They both equal 10
We know that the standard deviation is 5 and the mean is 73. So, 68 is one standard deviation from the mean (left of the mean). While, 78 is one standard deviation away from the mean in the other direction (right of the mean).
Using a standard normal distribution (bell curve).
34% fall between 68 and 73
34% fall between 73 and 78
Therefore, 34% + 35% = 68%.
68% of the students scored between 68 and 78, which means most of the class did average/poorly on the test.
Side note: what helped me when I was in statistics was planting my mean and scores on the bell curve. I'll add a picture on how to do it.