1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
mixas84 [53]
3 years ago
10

If it rains ​tomorrow, the probability is 0.6 that John will practice his cello. If it does not rain ​tomorrow, there is only a

0.4 chance that John will practice. Suppose the chance of rain tomorrow is 70​%.
What is the probability that John will practice his cello​?
Mathematics
1 answer:
steposvetlana [31]3 years ago
6 0

The final probability is the weighted average of the playing probabilities calculated over the possible weather options:

P(john practices cello; given that it rains) * P(it rains) +

P(john practices cello; given that it does not rain) * P(it does not rain) =

0.6 * 0.7 + 0.4 * 0.3 = 0.54

The probability is 54%

You might be interested in
Please help me with this geometry question :((
Bumek [7]

Answer:

95

Step-by-step explanation:

GH = SR

SR = 30

FG =TS

TS = 39

104-39 =65

30+65 =95

3 0
3 years ago
Read 2 more answers
Please Help Will give 20 points
wariber [46]

600 +200 + 100 = 900

2000 - 900 = 1100

1100/6 = 183.33 so he can buy 183 games


8 0
3 years ago
The point P(5, −1) is rotated 90 degrees clockwise around the origin.
azamat

Answer:

C

Step-by-step explanation:

:)

3 0
2 years ago
Read 2 more answers
Need help with homework
motikmotik

We have two points describing the diameter of a circumference, these are:

\begin{gathered} A=(-12,-4) \\ B=(-4,-10) \end{gathered}

Recall that the equation for the standard form of a circle is:

(x-h)^2+(y-k)^2=r^2

Where (h,k) is the coordinate of the center of the circle, to find this coordinate, we find the midpoint of the diameter, that is, the midpoint between points A and B.

For this we use the following equation:

M=(\frac{x_1+x_2_{}_{}}{2},\frac{y_1+y_2}{2})

Now, we replace and solve:

\begin{gathered} M=(\frac{-12+(-4)}{2},\frac{-4+(-10)}{2} \\ M=(\frac{-12-4}{2},\frac{-4-10}{2}) \\ M=(\frac{-16}{2},\frac{-14}{2}) \\ M=(-8,-7) \end{gathered}

The center of the circle is (-8,-7), so:

\begin{gathered} h=-8 \\ k=-7 \end{gathered}

On the other hand, we must find the radius of the circle, remember that the radius of a circle goes from the center of the circumference to a point on its arc, for this we use the following equation:

r^2=\Delta x^2+\Delta y^2

In this case, we will solve the delta with the center coordinate and the B coordinate.

\begin{gathered} r^2=((-4)-(-8))^2+((-10)-(-7)) \\ r^2=(-4+8)^2+(-10+7)^2 \\ r^2=4^2+(-3)^2 \\ r^2=16+9 \\ r^2=25 \\ r=5 \end{gathered}

Therefore, the equation for the standard form of a circle is:

\begin{gathered} (x-(-8))^2+(y-(-7))^2=25 \\ (x+8)^2+(y+7)^2=25 \end{gathered}

In conclusion, the equation is the following:

(x+8)^2+(y+7)^2=25

4 0
1 year ago
Given the function f(x) = -x + 4, then what is f(-3x) as a simplified<br> polynomial?
quester [9]

Answer:

3x+4

Step-by-step explanation:

f(x) = - x+4

Substitute in x=-3x

f(-3x)= - (-3x) + 4 = 3x+4

5 0
3 years ago
Other questions:
  • What is the value of 3/4÷6/7
    11·1 answer
  • What is the outlier (or outliers) in this data set:
    8·1 answer
  • With the given information, which of these conclusions is reasonable?
    14·2 answers
  • Peter states that the roots of a quadratic equation are 6 and -3. He believes its factored form is (x + 6)(x - 3). Is Peter righ
    14·1 answer
  • Marty joined Movies R U for a $12 fee and an agreement to pay $2.50 per movie he rents. The equation for his total cost is y = 2
    11·2 answers
  • 2x + 4y = 12
    12·1 answer
  • What is the value of<br> 4/3 divided by 2/5 ?
    10·2 answers
  • you buy 4 pounds of beef at a price of $5.89 per pound. select the two expressions that you could use to determine the total cos
    13·1 answer
  • Which of the following is a true statement regarding the information shown in the pie chart?
    6·1 answer
  • Define terminating.math​
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!