Probability helps us to know the chances of an event occurring. The probability of a family owning a cat or a dog is 0.22.
What is Probability?Probability helps us to know the chances of an event occurring.
[tex]\rm Probability=\dfrac{Desired\ Outcomes}{Total\ Number\ of\ outcomes\ possible}[/tex]
As it is given that the probability of a family owning a cat is 0.10, the probability of owning a dog is 0.20, and the probability of owning a cat and a dog is 0.08. Therefore, the probability of a family owning a cat or a dog can be written as,
Probability (family owning a cat or a dog)
= Probability (Cat) + Probability (Dog) - Probability (Cat And Dog)
[tex]\text{Probability (family owning a cat or a dog)} = 0.10+0.20-0.08 = 0.22[/tex]
Hence, the probability of a family owning a cat or a dog is 0.22.
Learn more about Probability:
https://brainly.com/question/795909
#SPJ1
A shelf contains 3 fashion magazines and 4 health magazines. You randomly choose one to read, set it aside, and randomly choose another for your friend to read. Which of the following describes the error in finding the probability that both events $A$ and $B$ occur? Event $A:$ The first magazine is fashion. Event $B:$ The second magazine is health.
Answer:
B
Step-by-step explanation:
The probability of getting both fashion and health magazine without replacement is 2/7.
What is the probability?Probability can be defined as the ratio of the number of favourable outcomes to the total number of outcomes of an event.
We know that, probability of an event = Number of favourable outcomes/Total number of outcomes.
Given that, a shelf contains 3 fashion magazines and 4 health magazines.
Total number of books = 7
Number of fashion magazines = 3
Number of health magazines= 4
Probability of getting fashion magazines = 3/7
Probability of getting health magazines = 4/6
Probability of getting both the events = 3/7 ×4/6
= 1/7 ×4/2
= 2/7
Therefore, probability of getting both fashion and health magazine without replacement is 2/7.
To learn more about the probability visit:
https://brainly.com/question/11234923.
#SPJ2
The hours students reported practicing their instruments last grading quarter were 29, 20, 36, 44, 30, 32, and 40.
The mean hours students reported practicing their instruments is
.
The mean absolute deviation for the data is
.
Answer:
The mean is 33 and the MAD is 6.
Step-by-step explanation:
I took it on edge and got it right. Sorry I don't have a better explanation.
The person above me is correct.
Step-by-step explanation:
Solve the equation for x.
X-5 = 11
Enter the number that belongs in the green box.
x = [?]
Enter
Given the recursive formula shown, what are the first 4 terms of the sequence?
Step-by-step explanation:
Answer is option A
f(1)=3
f(2)=f(2-1)+4=f(1)+4=3+4=7
... So on
Hence the series would be 3,7,11,15,..
The required first four terms are 3,7,11,15
I hope it helped you
Answer: the answer is a
3,7,11,15 (+4 each time )
Step-by-step explanation: we are adding 4 each time .Hope it helps .
A researcher wants to compare the mean score on the Achenbach Youth Self Report form for a sample of youth displaced by a
hurricane to the population mean of 50 and a population standard deviation of 10. The researchers report a sample mean of 48 for their
sample of 36 youth. What is the standard error (aka standard error of the mean) for this sample? Round each step to two decimal
places.
Using the Central Limit Theorem, it is found that the standard error for this sample is of 1.67.
What does the Central Limit Theorem state?It states that for a population of standard deviation [tex]\sigma[/tex], the sampling distribution of sample means of size n has standard error [tex]s = \frac{\sigma}{\sqrt{n}}[/tex].
In this problem, we have that [tex]\sigma = 10, n = 36[/tex], hence the standard error is given by:
[tex]s = \frac{10}{\sqrt{36}} = 1.67[/tex]
More can be learned about the Central Limit Theorem at https://brainly.com/question/24663213
Please solve the missing parts
Answer:
34 28 37 56 34 37 28 20 43 15
an amusment park sold 9.728$ worth of admission tickets for a seciak roller coaster at night expirement each ticket cost 38$ how many tickets were sold for the special event show your work
Answer:
256
Step-by-step explanation:
The revenue from the sale of n tickets at $38 each is given as ...
38n = 9728 . . . . total sales from special event tickets
Dividing by the coefficient of n gives the number of tickets:
n = 9728/38 = 256
256 tickets were sold for the special event.
Two lines are perpendicular. If one line has a slope of 1/2, what is the slope the other line?
The slope of the perpendicular line would be the negative reciprocal of the other line.
negative reciprocal of 1/2 = -2
answer: -2
Find the both term of the arithmetic sequence –27, -24, -21, ...
Answer:
-18 is the ans you can calculate it
15.5% of what number is 65?
Answer:
1007.5
Step-by-step explanation:
1007.5 because if you do the math, 15.5% of 65:
65 * 15.5% = x
x=1007.5
double check:
1007.5 / 15.5%= 65
triple check:
1007.5 / 65 = 15.5%
6 divided by 7215 and i need help its to hard????
Answer:
If you mean 6 / 7215 it is 0.00083
but if you meant 7215 / 6 it is 1202.5
Step-by-step explanation:
I WILL GIVE 20 POINTS TO THOSE WHO ANSWER THIS QUESTION RIGHT NOOOO SCAMS AND EXPLAIN WHY THAT IS THE ANSWER
Answer:
can you send a better picture of the question so it can be clearer
Step-by-step explanation:
I will give Brainliest!!! :D
Match each situation to an equation.
(You can just write the color of the equation card and the fraction in the situation, ex. Green card to 2/5) :)
Answer:
Purple to 1/4
red to 13/10
blue to 2/5
green to 1/5
Step-by-step explanation:
I think that is correct, butttt I am not postive
factor the expression 14x+13-8x-1
Answer:
2(11x+6)
Simplify to 22x + 12
Greatest common factor is 2
2x11x = 22
2x6 = 12
Which real-world scenario involves a right triangle?
Answer:
Step-by-step explanation:
Medical treatments that involve laser beams.
We can measure how far we put perpendicular the laser beam to a patient skin and we can calculate using right triangles how wide the beams go to only target certain cells (like cancer cells.)
Please answer this as soon as possible!!
Answer:
Step-by-step explanation:Given
-3+(-5)
-3+(-5)=-3-5=-8
Observing option A.) -3+-(-5)=-3+5=2
Observing option B.)-3+5=2
Observing option C.)-5-(-3)=-5+3-2
Observing option D.)-5-(-3)=-5+3=-2
It doesn’t seem that any option is correct maybe ask your teacher show them this or something
Please help. Find the lateral area of the square pyramid
Answer:
960 in squared
Step-by-step explanation:
[tex]\sqrt{16^{2} +12^{2} }[/tex]=20
4*[tex]\frac{1}{2}[/tex]*24*20=960
The height of a triangle is 4 feet less than the length of its base, b. The area of the triangle is 30 square feet.
Find the base and the height of the triangle.
Step-by-step explanation:
h=b-4
A=30ft^2
A=1/2bh
30=1/2b(b-h)
Cross Multiply
60=b(b-4)
60=b^2-4b
b^2-4b-60=0
Factorise the equation
(b^2+6) (-10b-60)
b(b+6)-10(b+6)
(b-10) (b+6)
b-10=0 or b+6=0
b=10 or b=-6
base =10 (since measurement can not be negative)
h=b-4
Sub the value of b
h = 10-4
h=6
So the height is 6ft and base is 10ft
What is the volume of the cylinder below? 5 4 6 O A. 60 units 3 B. 967 units 3 O C. 80 units 3 D. 120 units 23
Answer:
B. 967 units is the answer
Answer:
C
Step-by-step explanation:
Jella rode on the bike trail one afternoon. She biked 12 miles in 1 hour and 24 miles in 2 hours
INn FOUR hours Jennifer will travel 12 m/h x4 = 48 miles
it will take Thomas 48 miles / 4 m/hr = 12 hours to reach the bike in the meantime Jennifer has EIGHT hours of walking 3 m/hr x 8 = 24 miles form the bike Thomas now sets out at 10 m/h this is 10 - 3 = 7 m/h faster than Jennifer is walking he will close the 24 miles and catch Jennifer in 7 m/hr *x = 24 m
24/7hours
So Thomas walks for 12 hours then bikes for 24/7 hr = 15 3/7 hrs = ~ 15 hr 26 min
Rosa and her two brothers do not like taking out the trash. Rosa's mother wrote each child's name on a piece of paper and put it into a bag. QuestionThen Rosa's mother chose a name from the bag without looking to see who would take out the trash. What is the probability that either of Rosa's brothers were chosen?
A 1/3 B 1/2
C 2/3 D 2/1
Answer:
C 2/3
Step-by-step explanation:
There are only three names and two of them are boys sooo 2/3
77
Look at the two division problems below. Will they have the same quotient?
Explain how you can find the answer without calculating.
747925
7.492.5
Find the perimeter of the figure.
3x+4/5=7-2x what is the solution to the equation?
At a concession stand, three hot dog(s) and four hamburger(s) cost $12.00; four hot dog(s) and three hamburger(s) cost $10.75. Find the cost of one hot dog and the cost of one hamburger.
Answer:
hotdog is $1.25
hamburger is 1.75
Step-by-step explanation:
|x+3| if x=2 please help i have rsm
Answer:
5
Step-by-step explanation:
|x+3| =
|2+3| =
|5| =
5 =
Answer: 5
Step-by-step explanation:
If x = 2, the numbers in the brackets should now be 2 and 3.
2+3 = 5.
Because having numbers in brackets like these | | means absolute value, the number you get is always a positive number.
please help!!!!!!!!!!
Answer:
false true false false
Calculate: a) of 36 =
Answer: 9
Step-by-step explanation:
=> 1/4 of 36
=> 'of' always refers to multiplication:
=> 1/4 × 36
=> By cross cancellation of 4 and 36 we get:
=> 1 × 9
=> 9 Answer...
hope that helps...
In which number does the digit 6 have a value that is 10 times as great as the value of the digit 6 in 283,691?
360,281
486,732
573,674
678,832
HELP PLEASE!!!!!!!!!
Answer:
The answer is 486,732
Solve the equation using the method of completing the square.
3x2 + 24x – 24 = 0
Answer:
Logical first step: divide everything by
3
Explanation:
→
x
2
−
8
x
+
8
=
0
Completing the square would mean: taking half of the
x
-coefficient and squaring that:
x
2
−
8
x
+
(
−
4
)
2
=
x
2
−
8
x
+
16
=
(
x
−
4
)
2
But we still have to balance the
16
with the
8
we had:
→
x
2
−
8
x
+
16
→(x−4)2−8=0→(x−4)2=8
So
x-4=√8=2√2→x=4+2√2
Or
x−4=−√8=−2√2→x=4−2√2
Often written as x1,2=4±2√2
The solution of the given quadratic equation by completing the square method are [tex]2\sqrt{6} -4 \ or -2\sqrt{6} -4[/tex].
What is completing the square method?Completing the square method is factorizing a quadratic equation, and henceforth finding the roots or zeros of a quadratic polynomial or a quadratic equation.
According to the given question.
We have a quadratic equation
[tex]3x^{2} + 24x - 24 = 0[/tex]
The above quadratic equation can be written as
[tex]3(x^{2} + 8x - 8) = 0[/tex]
[tex]\implies x^{2} + 8x -8= 0[/tex]
Now, we will solve the above equation by completing the square method.
[tex]x^{2} +8x - 8= 0[/tex]
[tex]\implies x^{2} + 2(4x) +(4)^{2} -(4)^{2} -8 = 0[/tex]
[tex]\implies x^{2} + 2(4x) + 16 - 16 -8 = 0[/tex]
[tex]\implies (x+4)^{2} - 24=0[/tex]
[tex]\implies (x+4)^{2} = 24[/tex]
[tex]\implies (x+4)^{2} = 24[/tex]
[tex]\implies (x+4) = \sqrt{24}[/tex]
[tex]\implies x+ 4 = \pm 2\sqrt{6}[/tex]
[tex]\implies x = 2\sqrt{6} -4 \ or -2\sqrt{6} -4[/tex]
Hence, the solution of the given quadratic equation by completing the square method are [tex]2\sqrt{6} -4 \ or -2\sqrt{6} -4[/tex].
Find out more information about completing the square method here:
https://brainly.com/question/26107616
#SPJ2