Answer:
48 and 4
Step-by-step explanation:
If we assume that [tex]\bar X[/tex] to be the random variable that proceed the normal distribution with mean [tex]\mu[/tex] and a standard deviation [tex]\dfrac{\sigma }{\sqrt{n}}[/tex]
Given that:
mean =48
standard deviation = 16
sample size = 16
The population mean is same as the population mean in sampling distribution that is 48.
The standard deviation of the sampling distribution is therefore calculated as:
standard deviation = [tex]\dfrac{\sigma }{\sqrt{n}}[/tex]
standard deviation = [tex]\dfrac{16 }{\sqrt{16}}[/tex]
standard deviation = [tex]\frac{16}{4}[/tex]
standard deviation = 4
Thus; the mean and the standard deviation of the sampling distribution is 48 and 4
A boy cycles at an average speed of 22 km/h . How long does it take him to travel 55 km ?
Answer:
Step-by-step explanation:
that is 55/22 = 2.5 hrs
Answer: .two and a half hours.
Step-by-step explanation:
22/1 = 55/x
22x=55
X=2.5
Use the given measurements on the triangle to write the following trig ratios and answer the question that follows Please help!
Answer:
1. sin P = 20/29
cos P = 21/29
tan P = 20/21
sin Q = 21/29
cos Q = 20/29
tan Q = 21/20
2. We can notice that the sin and cos of P vs Q are switched and the tan's are a reciprocal of each other
Step-by-step explanation:
For Part 1
With knowledge of SOH CAH TOA
Sin = Opp/Hyp
Cos = Adj/Hyp
Tan = Opp/Adj
So:
sin P = 20/29
cos P = 21/29
tan P = 20/21
sin Q = 21/29
cos Q = 20/29
tan Q = 21/20
For Part 2
We can notice that the sin and cos of P vs Q are switched and the tan's are a reciprocal of each other
In the decimal 2.1738 the 7 is in the _____place
Answer:
hundreth's place
Step-by-step explanation:
see attached for explanation
what is 3.9/5.9 reduced to its lowest form
Answer:
About 0.66 or in fraction form 2/3
Step-by-step explanation:
You divide 3.9 by 5.9
Answer:
39/59
Step-by-step explanation:
3.9 / 5.9
Multiply the top and bottom by 10 to clear the decimals
3.9*10 / 5.9 * 10
39/59
Since 59 is prime, this is the simplest form
Kill’em Dead Pest Control needs to set out 5 roach motels per square yard. In a rectangular studio apartment that’s 7 yards by 4 yards wide, about how many roach motels will need to be set out?
Answer:
113 moteis
Step-by-step explanation:
A = 7 x 4 = 28 yards^2
1 yard - 0,9 m
1 yard^2 - 0,81 m^2
28 yards^2 - A
A = 28 x 0,81 = 22,68m^2
22,68 x 5 = 113,4
113 moteis
Answer:
140
Step-by-step explanation:
because it is
EXERCISE
A ball is drawn randomly from a bag containing 8 red, 4 blue and 2 green identical balls. Find the probability that the ball drawn is not red.
What is the probability that a number chosen at random from the integers between 1 and 10 inclusive is either a prime or a multiple of 3?
A bag contains four red balls, five blue balls and six green balls. Three balls are drawn from the bag at random without replacement. What is the probability that all three are:
The same colour
Different colour
Answer:
1)The probability that the ball drawn is not red is 6 /14
2)Probability of getting either a prime or a multiple of 3 is 7/10
3)Probability of drawing three balls without replacement such that all three are Same colour is 0.0747
Probability of drawing three balls without replacement such that all three are different colour is 0.5
Step-by-step explanation:
1) A ball is drawn randomly from a bag containing 8 red, 4 blue and 2 green identical balls. Find the probability that the ball drawn is not red.
No. of red balls = 8
No. of blue balls = 4
No. of green balls = 2
Total no. of balls = 8+4+2=14
P(Getting red bal)=[tex]\frac{8}{14}[/tex]
P( ball drawn is not red) = [tex]1 - \frac{8}{14}=\frac{6}{14}[/tex]
So,the probability that the ball drawn is not red is 6 /14
2)What is the probability that a number chosen at random from the integers between 1 and 10 inclusive is either a prime or a multiple of 3?
Numbers : 1 ,2,3,4,5,6,7,8,9,10
Prime numbers: 2,3,5,7 = 4
Multiple of 3 = 3,6,9 =3
So, Probability of getting prime number =[tex]\frac{4}{10}[/tex]
Probability of getting multiple of 3 =[tex]\frac{3}{10}[/tex]
So, Probability of getting either a prime or a multiple of 3=[tex]\frac{4}{10}+\frac{3}{10}=\frac{7}{10}[/tex]
Hence Probability of getting either a prime or a multiple of 3 is 7/10
3)A bag contains four red balls, five blue balls and six green balls. Three balls are drawn from the bag at random without replacement. What is the probability that all three are:
The same colour
Different colour
No. of red balls = 4
No. of blue balls = 5
No. of green balls = 6
Total balls = 15
Case 1 :all three are Same colour
So, probability of drawing three balls without replacement such that all three are Same colour = [tex]\frac{4}{15} \times \frac{3}{14} \times \frac{2}{13}+\frac{5}{15} \times \frac{4}{14} \times \frac{3}{13}+\frac{6}{15} \times \frac{5}{14} \times \frac{4}{13}=0.0747[/tex]
So, probability of drawing three balls without replacement such that all three are different colour =[tex]\frac{4}{10} \times \frac{5}{9} \times \frac{6}{8}+\frac{5}{10} \times \frac{4}{9} \times \frac{6}{8}+\frac{6}{10} \times \frac{5}{9} \times \frac{4}{8}=0.5[/tex]
So,probability of drawing three balls without replacement such that all three are Same colour is 0.0747
So,probability of drawing three balls without replacement such that all three are different colour is 0.5
Can anybody help solve this?
There is a picture with the formula. I need to find surface area and volume.
Answer:
ok so. wheres the question
Answer:
100π and [tex]\frac{500\pi }{3}[/tex]
Step-by-step explanation:
The other picture wouldn’t attach, but the radius is 5.
Surface area = 4πr²
r= 5
4.π5²= 25.4.π = 100π
Volume = [tex]\frac{4}{3} \pi r^{3}[/tex]
r=5
[tex]\frac{4}{3} \pi 5^{3} = 125.4.\pi[/tex] = [tex]\frac{500\pi }{3}[/tex]
Hope this helps ^-^
Plzzzz help I’ll give Brainiest to whoever gives me the answer!!!!!
Answer:hello
Because negative can't go under the radical 2
For example we can't find two number that multiplication of them be negative. 2×2=4,-2×-2=4.
I'll hope that l explane for you weel
Step-by-step explanation:
Please answer correctly !!!!!!! Will mark brainliest !!!!!!!!!!!
Answer:
1. Subtract 2 from both sides.
2. Multiply both sides by 2.
3. Take the square root of both sides.
4. Subtract 5 from both sides.
Answer:
Subtract 2 from both sides
Multiply both sides by 2
Take the square root of both sides
Subtract 5 from both sides
Step-by-step explanation:
Please refer to the picture attached.
(6 + 3) = (4 - 5) =
Answer:
if you need to evaluate it its
Evaluate.
9=−1
however if you need to
Determine if True its False
hoped that help
Answer:
its 18, -9, 30
Step-by-step explanation:
just did it
The graph of a sinusoidal function has a minimum point at (0,3)(0,3) and then intersects its midline at (5π,5)
Write the formula of the function, where x is entered in radians.
Answer: F(x) = 2*sin(x/10 +(3/2)*pi) + 5
Step-by-step explanation:
The information that we have is that:
We have a minimum at (0, 3)
the midline is at (5*pi, 5)
This is a sinusoidal function, so we can write one generic one as:
F(x) = A*sin(c*x + p) + B.
where A and B are constants, c is the frequency and p is a phase
First, the minimum of the sine function is when sin(x) = -1, and this happens at (3/2)*pi
We know that this minimum is at x = 0.
sin(c*0 + p) = -1
Then p = 3/2*pi.
So our function is:
F(x) = A*sin(c*x +(3/2)*pi) + B.
Now, we know that F(0) = 3, so:
3 = A*sin(c*0 +(3/2)*pi) + B = -A + B.
now we can use the other hint, the midpoint of the sine function is when sin(x) = 0, and this happens at x = 0 and x = pi, particularlly as we here have a phase of 3/2*pi, we should find x = 2*pi.
then:
c*5*pi + (3/2)*pi = 2*pi
c*5 + 3/2 = 2
c*5 = 2 - 3/2 = 1/2
C = 1/2*5 = 1/10
So our function is
F(x) = A*sin(x/10 +(3/2)*pi) + B
and we know that when x = 5*pi, F(5*pi) = 5, so:
5 = F(x) = A*sin(5*pi/10 +(3/2)*pi) + B
5 = B
and we aready knew that:
- A + B = 3
-A + 5 = 3
A = 5 - 3 = 2
So our equation is:
F(x) = 2*sin(x/10 +(3/2)*pi) + 5
Answer:
the correct answer is
[tex]f(x) = - 2 \cos( \frac{1}{10}x ) + 5[/tex]
Select the value(s) that could be the probability of an event
Answer:
what values???!!!
Step-by-step explanation:
PLEASE HElP ASAP 10 PTS, BRAINLEST ANSWER
Indicate the equation of the given line in standard form. Show all of your work for full credit.The line containing the altitude to the hypotenuse of a right triangle whose vertices are P(-1, 1), Q(3, 5), and R(5, -5).
Answer:
is there more in the question
A group of friends were working on a student film. They spent $270 on props which was 45% of their total budget. What was the total budget for their student film?
Answer:
The total budget for their student film is $600
Step-by-step explanation:
Here, we want to calculate the total budget of a group of students on a movie given the amount the spent on props.
Since we do not know this amount, we can call it x
Now, 45% of this x was the amount spent on props and it is equal to $270
Mathematically;
45/100 * x = 270
45x = 100 * 270
x = (100 * 270)/45
x = 600
The weather forecaster says that there is an 80% chance of rain today. Which statement describes the likelihood that it will rain today?
Please answer CORRECTLY !!!!! Will mark brainliest !!!!!!!!!
Answer: b = -52/7 - 4a/7
3x/3=? I WILL MARK U BRAINLIST!!!!!
Answer:
3 x 3 =9
Step-by-step explanation:
9
Answer: x
Step-by-step explanation: When dividing 3x by 3, the 3's will cancel each other out simply leaving us with our variable, x.
A food truck sells tacos, burritos, and drinks.
Let event A = A customer buys a taco.
Let event B = A customer buys a drink.
What does P(A or B) = 0.45 mean in terms of this problem?
A. The probability that a customer buys a taco, a drink, or both is
45%.
B. Buying a taco and buying a drink are mutually exclusive events.
C. The probability that a customer buys neither a taco nor a drink is
45%.
D. The probability that a customer buys both a taco and a drink is
45%.
Answer:
The probability that a customer buys a taco, a drink, or both is 45%.
Step-by-step explanation:
apeeex
P(A or B) = 0.45 mean in terms of this problem will be the probability that a customer buys a taco, a drink, or both is 45%. Then the correct option is A.
What is probability?Its fundamental concept is that someone will nearly surely occur. The proportion of positive events in comparison to the total of occurrences.
Then the probability is given as,
P = (Favorable event) / (Total event)
The value of the probability of an event must lie between the interval of [0, 1].
A food truck sells tacos, burritos, and drinks.
Let event A = A customer buys a taco.
Let event B = A customer buys a drink
P(A or B) = 0.45 mean in terms of this problem will be the probability that a customer buys a taco, a drink, or both is 45%. Then the correct option is A.
More about the probability link is given below.
https://brainly.com/question/795909
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Joel has a summer job cutting lawns. The relationship between his profit, P , in dollars and the
number of lawns cut, n , is shown by the graph below. What type of variation is the relationship, and
what is its initial value?
Answer:
There is a direct relationship between the profit P and the number of lawns cut
The initial value is (0,-100)
Step-by-step explanation:
Firstly, we want to know the type of variation that is between the profit and the number of lawns.
Now, looking at the graph, we can see that as the number of lawns increase, there is a corresponding increase in the profit causing a sharp rise in the graph.
What this represents is that there is a direct relationship between the two quantities.
Now, we are told to get the initial value.
Looking at the plot, we can see that the number of lawns is the x axis while the profit is the y axis
The initial value is that point at which we have the graph intersecting the y-axis which is below the x-axis
This point is the point (0,-100)
This point gives the initial value of the relationship
What is the length of the hypotenuse of the triangle?
Answer:
26 ft
Step-by-step explanation:
Since this is a right triangle, we can use the Pythagorean theorem
a^2 + b^2 = c^2
10^2+24^2 = c^2
100 +576 = c^2
676 = c^2
Take the square root of each side
sqrt(676) = sqrt(c^2)
26 = c
Answer:
26 ft
Step-by-step explanation:
Pythagoras theorem
a^2+b^2=c^2
10^2+24^2=676
square root of 676= 26
Which statements are true about triangle ABC and it’s translated image, A’ B’ C’
Answer:
The last one is the answer
Step-by-step explanation:
PLEASE SEE PICTURE BELOW
Answer:
all real numbers
Step-by-step explanation:
Answer:
D, all real numbers greater than or equal to 0.
Step-by-step explanation:
The answer is D, all real numbers greater than or equal to 0
emergency!!!! Find the quotient and remainder when x^4 is divided by x^2 +2x -1
Answer:
quotient x² - 2x + 5
remainder (-12x+5)
Step-by-step explanation:
x² -2x +5
x² + 2x - 1 | x^4 + 0*x³ + 0*x² + 0x + 0
|-(x^4 + 2x³ - x²)
- 2x³ +x² + 0x
-(-2x³ - 4x² + 2x)
5x² - 2x + 0
-( 5x² +10x -5)
-12x + 5
x² - 2x + 5 + (-12x + 5)/(x² + 2x - 1)
The Quotient is [tex]x^{2} -2x+5[/tex] and The remainder is -12x +5
How to Solve this Problem?
This problem can be solved by following steps
According to the statement ,when x^4 is divided by x^2 +2x -1It is not possible to divide only x^4 We need more terms to make the division possible. We will add more terms such as 0*x^3+0x^2+0x+0Now it is Possible to divide by x^2 +2x -1The Quotient we get is [tex]x^{2} -2x+5[/tex]The Remainder we get is -12x+5Learn More about Quotient and remainder here
https://brainly.com/question/18191517
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Solve for x. Enter the solutions from least to greatest.
x2 – X – 12 = 0
Answer:
[tex]x=-3,4[/tex]
Step-by-step explanation:
Factorise in order to reveal factors.
[tex]x^2-x-12=0\\(x-4)(x+3)=0[/tex]
The body and head of a fox measure 19 ⅘ inches, and its tail measures 10 ⅘ inches. Whatis the total length of the fox?
Answer:
The total length of the fox is 30 3/5 inches
Step-by-step explanation:
Here, we are interested in calculating the total length of a fox, given the length of its head and body and also the length of its tail.
Mathematically, the total length of the fox = length of its head and body + length of its tail
length of the head and body = 19 4/5
length of its tail = 10 4/5
Plugging these values into the equation, we have;
19 4/5 + 10 4/5
99/5 + 54/5 = (99 + 54)/5 = 153/5 = 30 3/5 inches
show that x^2-8x+20 can be written in the form (x-a)^2+a. Where a is an integer
Answer:
(x - 4)^2 + 4
Step-by-step explanation:
x^2 - 8x + 20
= x^2 - 2*4*x + 16 + 4
= x^2 - 2*4*x + 4^2 + 4
= (x - 4)^2 + 4
= (x - a)^2 + a, with a = 4
Hope this helps!
20 POINTS AND BRAINLIEST !! PLEASE ANSWER THIS QUESTION !!
Answer: A
Step-by-step explanation:
it intercepts y at -3 and you can find slope using rise/run
What is the general form of the equation of the line shown?
Answer:
x - y = 0
Step-by-step explanation:
The given line is y = x.
We could re-write this as x - y = 0, which is in general form.
PLEASE HELP 10 Points!!!!
N/5 = -1/5 what is n?
Answer:
n = -1
Step-by-step explanation:
→The fraction [tex]\frac{n}{5}[/tex] is really just [tex]\frac{1}{5}n[/tex]:
[tex]\frac{1}{5}n = \frac{-1}{5}[/tex]
→To get n by itself, you must multiply both sides by the reciprocal of [tex]\frac{1}{5}[/tex], which is 5:
5 · [tex]\frac{1}{5}n = \frac{-1}{5}[/tex] · 5
n = -1
