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yaroslaw [1]
3 years ago
13

Maria wanted to know if there was a connection between her coffee consumption and how well she slept that night. For weeks, Mari

a recorded how many cups of coffee she drank in the morning and how many hours she slept that night.
What is the probability that a randomly selected day is one when she slept exactly 7 hours given that the day is one when she drank exactly 1 cup of coffee? (serious answers only please)

A. 3/15
B. 3/10
C. 7/15
D. 7/10

Mathematics
1 answer:
____ [38]3 years ago
6 0

Answer:

A

Step-by-step explanation:

I did this

You might be interested in
1/3(4 + 18)-2²<br>PLIS I need help :(​
liraira [26]

Answer:

10/3

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right<u> </u>

Step-by-step explanation:

<u>Step 1: Define</u>

1/3(4 + 18) - 2²

<u>Step 2: Evaluate</u>

  1. (Parenthesis) Add:                                                                                          1/3(22) - 2²
  2. Exponents:                                                                                                      1/3(22) - 4
  3. Multiply:                                                                                                           22/3 - 4
  4. Subtract:                                                                                                          10/3
5 0
3 years ago
Which graph represents the solution of the system?<br>x² + y² = 4 <br>x-y=1<br>​
QveST [7]

Answer:

the bottom left one

Step-by-step explanation:

5 0
3 years ago
A ball is thrown upward with an initial velocity of 96 ft/sec from a height 640 ft. Its height​ h, in​ feet, after t seconds is
olchik [2.2K]
Check the picture below.

thus is at 0 = -16t² + 96t +640,

\bf 0=-16t^2+96t+640\implies 0=-16(t^2-6t-40)&#10;\\\\\\&#10;0=t^2-6t-40\implies 0=(t-10)(t+4)\implies t=&#10;\begin{cases}&#10;\boxed{10}\\&#10;-4&#10;\end{cases}

well, clearly it can't be a negative value for the elapsed seconds, so it can't be -4.

5 0
3 years ago
What is the greatest common factor (GCF) of 24 and 40?
o-na [289]

Question:

What is the greatest common factor (GCF) of 24 and 40?

Answer:

8

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
In one month Sierra earned $400 and $100 was withheld from income tax. Suppose she makes $600 next month. How much will be withh
valentina_108 [34]

Answer:

$150

Step-by-step explanation:

it is $25 income tax every $100 earned so 25 x 6 = 150

6 0
3 years ago
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