The denominator cannot equal zero.
7 - 8x ≠ 0
7 ≠ 8x
Answer: 
is not in the domain
Answer: 3. Distributive
Step-by-step explanation:
Distributive property of multiplication over addition is the only property that is require to multiply an expression to the other expression with two or more than two terms.
For example: a (b+c)= a b+ac , where a,b,c can be any expression.
Given expression: -5(x-3) = -5x +15 , which illustrates the distributive property of multiplication over addition.
Hence, the correct option is 3. Distributive.
The rest of properties cannot work for multiplication over addition as they are used for one operation.
A. 7 because the recipricle and 7 over 1 is just 7.
Answer:
30
Step-by-step explanation:
Answer:
a. 0.333
b. 0.657
c. 1.667
d. -4.07
Step-by-step explanation:
a. Expected time of the first purchase is 10/30 = 0.333
b. Probability for time of 0.14 minutes before first purchase is :
e^-rt, r = 30/10 = 3 , t = 0.14
e^ -3 * 0.14 = 0.65704
c. Expected time until 5th order :
1 / [30/10] * 5 = 1.6667
d. Probability that 8th purchase will occur between 1.33 and 2 minutes ;
[30/10 ] / [ 1/2] = 6
Chi squared distribution ;
1.33 * 6 - 2 * 6 = -4.02
