<u><em>I'm almost confident that I did this wrong, but i tried...</em></u>
Answer:
4a-9 ÷ -19
Step-by-step explanation:
(It was easier for me to put it in fractions)
+ 
+ 
(3-a) (a-4) + (5-a) (a-3)
+ + 3 - a · a - 4 + 5 - a · a - 3
+ + 3 - a + 1 - a - 3
1 - a - a
1 - 2a
Answer:
The correct answer is 2.2.
Step-by-step explanation:
The following represents the probability distribution for the daily demand of microcomputers at a local store:
Demand Probability
f(0)= .1
f(1)= .2
f(2)= .3
f(3)= .2
f(4)= .2.
Expectation of a discrete probability function f of the random variable x is given by ∑ x × f(x).
Thus the expected value of demand is given by
0.1 × 0 + 0.2 × 1 + 0.3 × 2 + 0.2 × 3 + 0.2 × 4 = 2.2.
The expected daily demand is 2.2.
Answer:
From the examples given below:
E(x): x is enrolled in the class T(x): x took the test ,
The following sentences can be translated into something similar like:
<em>1 E(x): All students enrolled in the class.</em>
<em>T(x): All students took the test. </em>
<em />
<em>2. E(x): Someone took the test </em>
<em>T(x): Someone are enrolled in the class.</em>
<em />
<em>3. E(x): Everyone took the test </em>
<em>T(x): Everyone is enrolled in the class.</em>
<em />
<em>4. E(x): At least one student is enrolled in the class </em>
<em>T(x): At least one student did not take the test.</em>
<em />
Step-by-step explanation:
Answer:
Her error was multiplying numerator by numerator ( that is Quantity of Bone-shaped treats)
Step-by-step explanation:
Sarah's calculation
Let
x = cost of 12 Bone-shaped treats
Quantity of Bone-shaped treats : price
5 : 3.5 = 12 : x
(5/3.5) = (12/x)
Cross product
3.5x=60 (Here is her error)
x=17.14
Correct calculation
Quantity of Bone-shaped treats : price
5 : 3.5 = 12 : x
5 / 3.5 = 12 / x
Cross product
5 * x = 3.5 * 12
5x = 42
x = 42 / 5
= 8.4
x = $8.4
Her error was multiplying numerator by numerator ( that is Quantity of Bone-shaped treats)
Instead of multiplying Quantity of Bone-shaped treats by cost
