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Ad libitum [116K]
2 years ago
8

The monthly utility bills in a city at e normally distributed, with a mean $100 and a standard deviation of $13. find the probab

ility that a randomly selected utility bill is (a) a less than $70, (b) between $85 and $120, and(c) more than $140.
​
Mathematics
1 answer:
dmitriy555 [2]2 years ago
5 0

Answer:

how's your day

Step-by-step explanation:

how's your day

You might be interested in
48 - 8x equivalent expression
topjm [15]

Answer:

8(6-x)

Step-by-step explanation:

Both 48 and 8 can be divisible by 8.

48 ÷ 8 = 6

8 ÷ 8 = 1

Therefore you get the answer 8(6-x)

as the simplest form.

Hope this helps.

6 0
3 years ago
= 118
oee [108]

Answer:

number of $20 bill = 4

Number of $5 bill = 5

Step-by-step explanation:

Given that:

Total number of $5 and $20 bills = 9

Let :

Number of $5 bills = x

Number of $20 bills = y

Combined worth of all bills = $105

x + y = 9 - - - (1)

5x + 20y = 105 - - - (2)

From (1)

x = 9 - y

Substitute x = 9 - y into (2)

5(9 - y) + 20y = 105

45 - 5y + 20y = 105

15y = 105 - 45

15y = 60

y = 60/15

y = 4

x = 9 - y

x = 9 - 4 = 5

Hence,

number of $20 bill = 4

Number of $5 bill = 5

6 0
3 years ago
2/3 - 4x + 7/2 = -9x + 5/6 need help asap please!
fiasKO [112]

Answer:

X= Negative 2/3 or -0.6

Step-by-step explanation:

here you go

3 0
3 years ago
This scatter diagram shows the marks scored in a class test in English and Science
kiruha [24]
U didn’t show the scatter diagram lol
6 0
3 years ago
What is the slope of this equation (2,-5) (-2,5)
Arisa [49]

Hello!

Here a graph of the slope!

8 0
3 years ago
Read 2 more answers
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