**Answer:**

bc is 26

**Step-by-step explanation:**

**Answer:**

(-1,2)

**Step-by-step explanation:**

Answer:

The probability is 0.31

Step-by-step explanation:

In this question, we are tasked with calculating the probability that a random plumber called at Denver will charge an amount greater than $86 given the mean and the standard deviation.

Firstly, we calculate the standard score of $86 using the mean and the standard deviation.

Mathematically;

z-score = (x-mean)/SD

where x = 86, mean = 84 and SD = 4

z-score = (86-84)/4 = 2/4 = 0.5

Hence, we want to calculate P(z ≥ 0.5)

Using standard table

P( (z ≥ 0.5) = 1 - P(z ≤ 0.5) = 1 - ( 0.19146 + 0.5) = 0.30854

To the nearest hundredth = 0.31

**Answer:**

35 blocks are given to the class

**Step-by-step explanation:**

she has 19 pounds which she divides into 1/2 pounds

19/1/2

38 blocks

she keeps 3 of the blocks and gives the rest away

38-3

35 blocks

Answer: 10.75

Steps:

After 110miles, it used 2.75gallons

Therefore, the amount of gas used per mile is: 100/2.75= 40 gallon per mile

So after 430miles, the number of gallons used: 430/40 = 10.75 gallons

Hope this helps ʕ•ᴥ•ʔ