Answer:
6.75 miles
Step-by-step explanation:
Since it is 2.25 per 1/2 hour to get to 1 1/2 hour you multiply by 3. Then you do 2.25 times 3 and it gives you 6.75 miles.
2. Suppose that P(A) = 0.32, P(B) = 0.46, P(C) = 0.23, P(A ∪ B) = 0.57, P(A ∪ C) = 0.55, P(B ∪ C) = 0.49. a. Compute P(B ′ ). b. Compute P(A ∩ B), and use the result to determine if A and B are mutually exclusive. c. Determine if A and C are mutually exclusive. Explain briefly. d. Describe in simple words what (A ∪ B ∪ C)′ represents. Determine P[(A ∪ B ∪ C)′]. (Hint: Determine first P(B ∩ C).)
Answer:
Step-by-step explanation:
From the given information:
a.
Compute [tex]P(B')[/tex]:
[tex]P(B') = 1 - P(B) \\ \\P(B') = 1 - 0.46 \\ \\ P(B') = \mathbf{0.54}[/tex]
b.
Compute P(A ∩ B)
P(A ∩ B) = P(A) +P(B) - P(A∪B)
P(A ∩ B) = 0.32 + 0.46 - 0.57
P(A ∩ B) = 0.21
Thus, since P(A ∩ B) ≠ 0, we can say that they are not mutually exclusive.
c.
P(A ∩ C) = P(A) +P(C) - P(A∪C)
P(A ∩ C) = 0.32 + 0.23 -0.55
P(A ∩ C) = 0
Thus, since P(A ∩ C) = 0, we can say that they are both mutually exclusive.
d. To determine P[(A ∪ B ∪ C)′]
i.e. none of the events occurring
Then :
P(B ∩ C) = 0.46 +0.23 -0.49
P(B ∩ C) = 0.20
Therefore:
P(A ∪ B ∪ C) = P(A) + P(B) + P(C) - P(A ∩ B ) - P(A ∩ C) - P(B ∩ C) + P(A ∩ B ∩ C)
P(A ∪ B ∪ C) = 0.32 + 0.46 + 0.23 - 0.21 - 0 - 0.20 + 0
P(A ∪ B ∪ C) = 0.60
How do you find the magnitude and positive direction angle of the vector
v = 6i − 6j?
Answer:
Step-by-step explanation:
Given the vector v = 6i-6j, the magnitude is expressed as shown;
|v| = √6²+(-6)²
|v| = √36+36
|v| = √72
|v| = √2×36
|v| = √36×√2
|v| = 6√2
The modulus of the vector is 6√2
To get the direction, we will use the formula;
(theta) = tan^-1(y/x)
(theta) = tan^-1(-6/6)
(theta) = tan^-1(-1)
(theta) = -45°
Since the angle is negative and tan theta is negative the in the second quadrant, the positive direction angle of the vector will be 180° - 45° = 135°
what’s the rule for the transformation
What's the slope of the line that passes through the points (4,8) and (2,12)? Write your answer in simplest form
The slope of the line passing through the given points (4, 8) and (2, 12) is -2.
Given the following points:
Points on the x-axis = (4, 2).Points on the y-axis = (8, 12)To find the slope of the line passing through the given points (4, 8) and (2, 12):
The slope of a line is simply the gradient of a line and it describes both the direction and steepness of an equation of a straight line.
Mathematically, the slope of a line is given by the following formula;
[tex]Slope. \;m = \frac{Change \; in \; y \;axis}{Change \; in \; x \;axis} \\\\Slope. \;m = \frac{y_2 - y_1}{x_2 - x_1}[/tex]
Substituting the given points into the formula, we have;
[tex]Slope. \;m = \frac{12 \;- \;8}{2\; - \;4}\\\\Slope. \;m = \frac{4}{-2}[/tex]
Slope, m = -2.
Therefore, the slope of the line passing through the given points is -2.
Read more: https://brainly.com/question/18123312
After building your factor tree, what is the simplified form of \sqrt{36}?
√36 indicates the principal (or positive) square root so √36=6 .
The square root of √36 is 6.
Hope this helps ! <3
a number rounded to the nearest hundred thousand is 400,000. The same number rounded to the nearest ten thousand is 350,000. What could the number be?
Answer:
360000
Step-by-step explanation:
Well, we know the number must be above 350,000 because it was rounded up to 400,000. In order for the number to round down to 350,000 the number would have to be between 350,000-354999. So, the number could be any number in between those two numbers.
For example: The number COULD be 351,000 but, that is not the only possible answer.
but the answer would be 360000.
What point is plotted on the graph? (9, 9) (9, 8) (8, 9) (8, 8)
Answer:
It's 9,8
Step-by-step explanation:
Answer:
the point is (9,8).......
Which ratio expresses 2 minutes to 300 seconds in simplest form?
Answer:
1 to 150! hope that helps :)
A cell phone company charges 45 per month and additional 0. $.24 for each text message sent during the month I know the cell phone company cellular plus charge 65 per month and additional 0.23 for each text message sent during the month how many text message would have to be sent any month to make both plans cause the same call first charge 14 GB of data used each month cellular plus charges 10 per gigabyte of data used each month if you were to send nine teen33 text messages and use 3 GB of the data any month which plan will be better
Answer: the 1st plan
Step-by-step explanation:
one over two divided by one over four
Answer:
.125 should be your answer. Have a Great Day!
Step-by-step explanation:
Write 3.79 as a mixed number.please
Answer:
379/100
Step-by-step explanation:
There are 6 girls and 4 boys taking karate lessons. Write the ratio that compares the
number of girls taking karate lessons to the total number of students taking karate
lessons
6:10
(6 girls for every 10 students)
Answer:
6:10
6+4=10
Step-by-step explanation:
9x=63
NEED YOUR HELP ILL MARK BRAINLIEST
Answer:
9x = 63
x = 63/9
x = 7
hope it helps!
Answer:
7
Step-by-step explanation:
7 times 9 = 63
the difference between half a number and 19
Circle A and Circle B are congruent circles. Which statement must be true?
a. Circle A and Circle B have the same center.
b. The radii of Circle A and Circle B have the same length.
c. Circle A and Circle B have exactly two points in common.
d. Circle A and Circle B touch at one point.
Answer:
B
Step-by-step explanation:
congruent mean the same, therefore the circles must be the same since they are congruent.
Answer:
B. The radii of Circle A and Circle B have the same length.
Step-by-step explanation:
The radii, diameter, and circumference would be the same length for two circles that are congruent, therefore, the answer is B.
The difference between nine and two
Answer:
7
Step-by-step explanation:
the difference is another way of saying subtraction so the subtraction of 9 and 2 which is obviously 7
Figure B is a scaled copy of Figure A.
What is the scale factor from Figure A to Figure B?
Answer:
3
Step-by-step explanation:
The area of a certain desert (Desert 1) is nine times the area
of another desect (Derect 2). If the sum of theic areas 13
10,000,000 square miles, find the area of each desert
Answer:
∴ Area of Desert 1 = 9,000,000 square miles
Area of Desert 2 = 1,000,000 square miles
Step-by-step explanation:
let the area of Desert 1 = x
Let the area of desert 2 = y
Given:
x = 9y - - - - - - (1)
x + y = 10,000,000 - - - - -(2)
Replacing the value of x from equation 1 into equation 2:
x + y = 10,000,000
where x = 9y
9y + y = 10,000,000
10y = 10,000,000
y = 10,000,000 ÷ 10
y = 1,000,000 square mile
Next, finding x by putting the value of y into equation 1
x = 9y
where y = 1,000,000
∴ x = 9 × 1,000,000
x = 9,000,000 square miles
∴ Area of Desert 1 (x) = 9,000,000 square miles
Area of Desert 2 (y) = 1,000,000 square miles
Answer:
100/51
just took the test
Step-by-step explanation
A federal report found that a lie detector test given to someone telling the truth will suggest that they lied in about 20% of cases. A company asks the 11 job applicants for a new position about thefts from previous employers. (a) What is the probability that the lie detector indicates that at least one of the applicants is lying
Answer:
[tex]0.055[/tex]
Step-by-step explanation:
Let [tex]p[/tex] be the probability of lying an applicant, so, [tex]p=20 \%[/tex].
[tex]\Rightarrow p=\frac {20}{100}=\frac {1}{5}\;\cdots (i)[/tex]
Any applicant will either lie or will tell the truth.
Let [tex]q[/tex] be the probability of telling the truth, so, [tex]q= 1-\frac {1}{5}[/tex]
[tex]\Rightarrow q=\frac {4}{5}[/tex]
As for every applicant [tex]p+q=1[/tex], so this is Bernoullies trials, for which
the probability of success of exactly [tex]x[/tex] times of an event out of [tex]n[/tex] trials is [tex]P(x)=\binom {n}{x} p^xq^{n-x}\; \cdots (iii)[/tex].
Now, let [tex]E[/tex] be the event of at least one of the applicants is lying out of [tex]11[/tex] applicants, here the total number of applicants, [tex]n=11[/tex].
So, [tex]P(E)= P(x=1)+ P(x=2)+\cdots+ P(x=11)[/tex]
This is equivalent to
[tex]P(E)=1-P(x=0)[/tex] as[tex][P(x=0)+P(x=1)+ P(x=2)+\cdots+ P(x=11)=1][/tex]
Now, from equation (iii),
[tex]P(E)=1-\binom {11}{0} p^0q^{11-0}[/tex]
[tex]\Rightarrow P(E)=1-11\left(\frac {1}{5}\right)^0\left(\frac {4}{5}\right)^{11}[/tex] [from equations s (i) and (ii)]
[tex]\Rightarrow P(E)=1-11\times 1 \times \left(\frac {4}{5}\right)^{11}[/tex]
[tex]\Rightarrow P(E)=1-0.945[/tex] (approx)
[tex]\Rightarrow P(E)=0.055[/tex]
Hence, the probability that the lie detector indicates that at least one of the applicants is lying is [tex]0.055.[/tex]
Find the slope of the line passing through the points (-5, 7) and (-5, -1)
Answer:
Step-by-step explanation:
(-1 -7)/(-5 + 5) = -8/0 = undefined
please answer this
I will mark you
plz plz
Answer:
don't know sorry......................
Answer:
y=120 degree z=120 degree and x=60degree
Step-by-step explanation:
y+60¤ =180¤(being straight line )
or,y=180¤-60¤
or,y=120¤
therefore y=120¤
Now z= 120¤ (being corresponding angle)
therefore z =120¤
here at last,
z+120=180 (being straight anngle)
or, z=60¤
therefore z =60¤
( ¤): degree
There are 30 students in a class, including 16 boys. The ratio of girls to boys would be 7 over 8.
Answer:
i dont understand- theres 3 ways u can put them tho 7:8 , 7 to 8 , or 7/8
Step-by-step explanation:
I know I'm no smarty pants but I need help!!
The given line passes through the points (-4, -3) and (4, 1).
On a coordinate plane, a line goes through (negative 4, negative 3) and (4, 1).
What is the equation, in point-slope form, of the line that is perpendicular to the given line and passes through the point (-4, 3)?
Answer:
it is a linear function
Step-by-step explanation:
a+D_rIf sales tax on an item is 6%, is the total price 106% of the item's price before tax? Show work to
help explain your answer.
Please help!!! I.m confused with the problem
Answer:
C
Step-by-step explanation:
Make the equation from the blocks:
-7x + 7 = 5x + 16
Then simplify:
Subract 7 from both sides:
-7x = 5x + 9
Add 7x:
0 = 12x + 9
Subtract 9:
-9 = 12x
x = -9/12 = -3/4
i'm dumb and don't know how to write 2 1/16 as a decimal
Answer:
[tex] \boxed{ \bold{ \huge{ \boxed{ \sf{2.0625}}}}}[/tex]
Step-by-step explanation:
[tex] \sf{2 \frac{1}{16}} [/tex]
First, convert the mixed number into improper fraction
[tex] \longrightarrow{ \sf{ \frac{2 \times 16 + 1}{6}}} [/tex]
[tex] \longrightarrow{ \sf{ \frac{32 + 1}{6}}} [/tex]
[tex] \longrightarrow{ \sf{ \frac{33}{16}}} [/tex]
Calculate
[tex] \longrightarrow{ \sf{2.0625}}[/tex]
Hope I helped!
Best regards! :D
Answer:
2.0625
Step-by-step explanation:
You're not dumb :)
find the area of the square rug if its side is (4×+1)feet
Answer:
5x feet
Step-by-step explanation:
it is 5x because you got to take away the x and just add them together then and the x to the soultion you get
y = –3x – 2 5x + 2y = 15
Answer:
x = - 19 y - 55 or point form (-19,55)
Please help pleaseeee
----------
/ 0.09 Type interger or decimal.
Answer:
0.09 = decimal
Answer:
DECIMALStep-by-step explanation:
0.09 is definitely NOT a integer.
Integer is a whole number.
a decimal is a way of writing a number that is NOT a whole number.
so the answer to your question is.... DECIMAL.
Subtract. 8 1/2 - 2 2/3
Answer:
Mixed number: 5 5/6
Improper fraction: 35/6
Step-by-step explanation:
8 1/2 - 2 2/3
17/2 - 8/3
35/6
5 & 5/6
Hope this helps!
Plz name brainliest if possible!