Answer:
Step-by-step explanation:
z-score representing 85% is 1.04 (from table)
Let x be the score representing the lower limit of 85%.
<u>Use the formula to find z-scores:</u>
<u>We have:</u>
<u>Substitute the values and solve for x:</u>
- 1.04 = (x - 78)/7
- x - 78 = 7.28
- x = 85.28
The lower limit of the top 15% is 85.28.
Since your score is greater than 85.28 you earned an A
All you need to do is divide the number of guests (128) by how many guests can be seated at a table (8) and that will give you how many tables will be needed:
128/8=16
16 tables will be needed to seat 128 guests.
Answer:
The value of x is 12.5.
Step-by-step explanation:
We are given with the following proportion below;
To find the value of
, first we have to find the number by which 12 must be divided so that we get 5 as a result.
That number is 2.4, that is if we divide 12 with 2.4 we get the result as 5.
So,
This means that
.
So, we get the value of x = 12.5.
Now, to check the solution to this proportion, we use cross multiplication method;

150 = 150
Since both sides of the equation are equal, that means our value of x = 12.5 is correct.
Cassie will have 63.1 yards of fabric to use to make curtains. :)