Answer:
A and B are the correct
Step-by-step explanation:
= 3(8 - 4x)
= 24 - 12x
so, A . 24 - 12x
B . 2(12 - 6x)
24 - 12x
<span> The ratio compares two quantities (in this case blue and white parts).
A unit rate (or unit ratio) describes how many units of the first type of quantity corresponds to one unit of the second type of quantity. In our case the first type of quantity is blue parts and the second is white parts, so we should find how many blue parts correspond to one white part.
The ratio is: 5/4
We will obtain the unit ratio if we divide each number with 4 in order to get 1 - as a second quantity.
So, (5/4)/(4/4)= (5/4)/1
The unit ratio is: </span>
<span>(5/4)/1.</span>
Answer:
You should stock 59 thousands of postcards
Step-by-step explanation:
In the standard normal distribution table, you want to find the Z with probability 0.4, which is (see figure attached) 1.28. Z is calculated as follows:
Z = (x - μ)/σ
where μ is the mean and σ is the standard deviation. Replacing with data:
1.28 = (x - 50)/7
x = 1.28*7 + 50 = 59 thousands of postcards
So, approximately 80% of the demand would be satisfied with a number of postcards between 41000 and 59000 (notice the curve is symmetrical).
12*4=48+6=<span>54 cans
</span>
There you go.