Answer:
μ₀ = 89
Step-by-step explanation:
A study has shown that 23 % of all College textbook cost 95 $ or more, then if the area under the bell shape curve is 23 % in the right tail, then
z(score ) = 0,74 ( 0,23 ≈ 0,2296 from z table )
Then z(score) = ( x - μ₀ ) / σ
0,74 = ( 95 - μ₀ ) / 8,5
0,74*8,5 = 95 - μ₀
6,29 - 95 = - μ₀
μ₀ = 88,71
μ₀ = 89
If f(x) = 5 x + 2 and g(x) = x - 1
f(g(4)) =
x-(-3)=5 X = ? Please help me
Ratios Unit Test 2020-2021 (WARD) 14 of 20
Frank weighs 80 pounds. About how many kilograms does Frank weigh? (1 kilogram 2.2 pounds)
A. 176 kilograms
B. 78 kilograms
OC. 36 kilograms
Answer:
bru
Step-by-step explanation:
Answer:
36
Step-by-step explanation:
If a bus traveled 120 miles in 2 hours, what was the average speed of the bus in miles per hour?
Answer:
60
Step-by-step explanation:
if you divide 120(the total distance traveled) by 2(the hours that it traveled) you get 60.
the answer is 60miles/1 hour or 60mph.
explanation:
so the bus completed 120miles in 2 hours. and they want you to find the speed or miles per hour the bus traveled. all you need to do is divide 120/2= 60 so the answer would be 60 miles per hour or 60mph. you know its right because the ratio of 120:2 shows how much per 2 hours we need to divide to find out how the ratio of miles:1 hours (which is better thought of as mph= miles per each hour) to show how much for 1 you divide both sides of 120:2 by 2. so 120÷2=60 : 2÷2=1 so you found the ratio is 60 miles per hour. 60:1 i hope that helps you guys out and that i didnt confuse you more.
There are 15 carnival booths at the Elm Street Fair. One-fifth of the booths are
selling food. The rest of the booths are selling games. How many food booths are at
the Fair?
Answer:
3 food booths
Step-by-step explanation:
15* 1/5 or 15/5 = 3
Answer:
there would be 3 food booths at the fair
Step-by-step explanation:
Quick
Check
Converting Percents to Decimals
Match the percent on the left with the decimal equivalent on the right.
4%
0.37
37%
1.80
400%
4.0
9%
0.04
180%
0.09
Answer:
Step-by-step explanation:
To convert percents to decimals, remove the percent and move the decimal point 2 to the left.
4 % = [tex]\frac{4}{100}= 0.40[/tex]
37% = 0.37
400% = 4.00 = 4
9% = 0.09
180% = 1.80
Answer:
400%=4.0 180%= 1.80 37%=.37 4%=.04 9%=0.09
Step-by-step explanation:
2 1/2 divided by 1/3
Answer:
7.5 or 7 1/2
Step-by-step explanation:
Answer:
7 1/2
Step-by-step explanation:
Hope this helped! <3
8 avocados cost 4 dollars how much is nine
Answer:
$4.50
Step-by-step explanation:
because each avocado is .50 cents.
Miguel wants to repair his home. He places a 15-foot ladder up against his home 9 feet from the base of the house. How far up the house does the ladder reach?
Answer:
12 feet
Step-by-step explanation:
i always forget abt this thing but its important to remember the pythagorean theorm is a thing. the whole a^2 + b^2 = c^2 thing. at first i looked back at sohcahtoa but thats for an angle lol. sooooooo, knowing that the hypotenuse is the ladder and the ground is the base and seeing that we need to find a since b is the base and c is the hypotenuse, we should rearrange the equation so that we can find a so now it should look like this: c^2 - b^2 = a^2. then we plug in our numbers to get this: 15^2 - 9^2 = a^2. next we would square the 15 and 9 so now our equation looks like this: 225 - 81 = a^2. now we subtract so we have: 144 = a^2. then we should find the square root of each. the square root of a^2 is a and the square root of 144 is 12 so now we have the answer: a = 12. i hope that makes sense.
i hope this helps :))
If limx→3f(x)=7,
lim
x
→
3
f
(
x
)
=
7
,
which of the following must be true?
I. f is continuous at x = 3
II. f is differentiable at x = 3
III. f(3) = 7
A scientist was curious if they could predict the height of an adult man based on their father's height. They took a large sample of men and recorded each of their heights along with their fathers' heights (in centimeters). The scientist noticed a positive linear relationship between the heights. Here is computer output from a least-squares regression analysis on the sample:
Answer:
176cm
Step-by-step explanation:
ŷ = 100.640 + 0.431x
ŷ = 100.640 + 0.431(175cm)
ŷ = 100.640 + 75.425
ŷ = 176.065
HELP!!!
Which of these numbers is irrational?
Which table is a probability distribution table?
Answer:
The Last One (Yellow/0.3 Orange/0.4 Green/0.15 Purple/0.15)
Step-by-step explanation:
I just took the test and got it right :)
Answer:
Step-by-step explanation:
The 1st table is correct. I put the last choice as my answer and was incorrect.
Mark on the number line with a cross
GEOMETRY, PLEASE HELP ME ASAP
I don't think I can do it. sorry
Heelllppppp mehhh plzzz
Answer:
y=-x+2, y=1/3x+2
Step-by-step explanation:
1) the y intercept is at 2, the slope is -1
2) the y intercept is at 2, the slope is 1/3
Which set of statements explains how to plot a point at the location N (23.-2) ? 1 O Start at the origin. Move 37 units right because the x-coordinate is units right because the x-coordinate is –3.-3. 5 is between 3 and 4. Move 2 units down because the y-coordinate is -2. 1. O Start at the origin. Move 3ā units down because the x-coordinate is -3.7. - 3 is between -3 and 4. Move 2 units left because the y-coordinate is -2. O Start at the origin. Move 3ā units down because the x-coordinate is -33.-3is between -3 and 4. Move 2 units 1 right because the y-coordinate is -2. O Start at the origin. Move 3ā units left because the x-coordinate is -3.3 is between -3 and -4. Move 2 units down because the y-coordinate is -2.
Answer:
Start at the orgin and move 23 points to the right. Next move two points down.
Step-by-step explanation:
The ordered pair is in the form (x,y)
the x-term means left or right. Left is negative and right is positive.
The y-term means up or down. Positive is up and negative is down.
g you are playing a game in which you flip 3 fair coins. it costs $1 to play the game, which must be subtracted from your winnings. Calculate the expected value for the game. If all coins show the same (all heads or all tails) you win $7, otherwise you lose your $1. The expected value of the game is
Answer:
Expected value of the game is $1.75
Step-by-step explanation:
The probability of getting a head or a tail on flipping a coin is 1/2 and so the probability of winning is 1/2 as we need all heads or all tails . There are 3 fair coins so the expected value of winning is given by =
P(1st coin =x =head)= 1/2
P(2nd coin =x =head)= 1/2
P(3rd coin =x =head)= 1/2
P(1st coin =x =tail)= 1/2
P(2nd coin =x =tail)= 1/2
P(3rd coin =x =tail)= 1/2
E(X= win) = ∑xP(x)= (1/2)³+(1/2)³= 1/8 + 1/8= 2/8
Expected value of winning the game is $ 7*2/8= 14/8=$ 1.75
$ 1.75- $1= $ 0.75
$ 0.75 (8) = $ 6
This means that for a total of $ 8 he gets $ 6.
There are 111 students in a nutrition class. The instructor must choose two students at random. What is the probability that a senior Nutrition major and then a junior Nutrition major are chosen at random
Complete Question
The complete question is shown on the first uploaded image
Answer:
The value is [tex] P(k \ n \ u ) = 0.02957[/tex]
Step-by-step explanation:
From the question we are told that
The total number of students is n = 111
The total number of senior nutrition major k = 19
The total number of junior nutrition major is u = 19
Generally the probability that a senior Nutrition major and then a junior Nutrition major are chosen at random is mathematically represented as
[tex]P(k \ n \ u ) = P(k) * P(u\ | \ k)[/tex]
Here [tex]P(k)[/tex] is the probability that a senior nutrition major is selected , this is mathematically represented as
[tex]P(k) = \frac{k}{n}[\tex]
=> [tex]P(k) = \frac{ 19}{111}[\tex]
and P( u | k) is the probability that a junior Nutrition major is selected given that a senior nutrition major has already been selected and this is mathematically represented as
[tex]P( u | k) = \frac{u}{n-1}[/tex]
=> [tex]P( u | k) = \frac{19}{111-1}[/tex]
=> [tex]P( u | k) = \frac{19}{110}[/tex]
So
[tex] P(k \ n \ u ) = \frac{ 19}{111} * \frac{19}{110} [/tex]
=> [tex] P(k \ n \ u ) = 0.02957[/tex]
Explain how these prisms are alike and how they are different
The graph of a sinusoidal function intersects its midline at (0, -7) and then has a minimum point at (pi/4, -9)
Write the formula of the function, where x is entered in radians
Answer:
3units/ 5 feet = 60 units/ 100 feet3 units/ 5 feet = 18 units/ 30 feetthe dimensions of the scale drawing are 60 units by 18 units.
Step-by-step explanation:
hope this helps :))
Equation of the sinusoidal function
f(x) = 2sin(6x) - 7
What is sinusoidal function?A sinusoidal function is one with a smooth, repetitive oscillation. "Sinusoidal" comes from "sine", because the sine function is a smooth, repetitive oscillation.
Examples of everyday things which can be represented by sinusoidal functions are a swinging pendulum, a bouncing spring, or a vibrating guitar string.
Given,
Graph of a sinusoidal function intersects its midline at (0, -7) and then has a minimum point at (π/4, -9)
Let function be
f(x)=asin(bx)+c ---------(1)
When x = 0
f(0)=-7,
⇒ -7=asin(0)+c
⇒ c=-7.
When x = π/4
f(π/4)=-9,
⇒ -9=asin(bx)-7;
Sine is constrained to [-1,1], and since (π/4,-9) is a minimum,
sin(bx) must be equal to -1.
⇒ -9=a·(-1) - 7
⇒ a = 2
For minimum
-1=sin(π/4.b),
⇒ πb/4=3π/2,
⇒ b=6
Putting value of a, b, c in equation (1)
f(x) = 2sin(6x) - 7
Hence, f(x) = 2sin(6x) - 7 is the equation for sinusoidal function.
Learn more about sinusoidal function here:
https://brainly.com/question/12060967
#SPJ2
Twenty air-conditioning units have been brought in for service. Twelve of them have broken compressors, and eight have broken fans. Seven units are chosen at random to be worked on. What is the probability that three of them have broken fans
Answer: 0.3576
Step-by-step explanation:
Let the probability that the units that have broken fans from the seven units chosen at random be x.
The probability that three of them have broken fans will be 0.3576. Check the attachment for details
Without multiplying, tell whether the product 0.644 x 0.25 will be greater than 1 or less than 1? Explain how you know. Then find the product.
Answer:
0.161 which is less than one
Step-by-step explanation:
Pretty simple just 0.644 × 0.25 = 0.16100
But you can take off the zeros and it is less than 1 because it is 0.161 not 1.16
What is the image point of (0,-5) after a translation right 5 units and up 2 units
what is the square root of 264?
♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️
[tex] \sqrt{264} = \sqrt{2 \times 11 \times 12} = \sqrt{2 \times 2 \times 2 \times 3 \times 11} = \\ [/tex]
[tex]2 \sqrt{66} [/tex]
♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️
Answer:
[tex]2\sqrt{66}[/tex]
Step-by-step explanation:
[tex]\sqrt{264} =\sqrt{2^{3}11^{1}3^{1}} }=2\sqrt{66}[/tex]
factor completely
6x^2-18x-60=??????
Answer:
6(x+2)(x-5)
Step-by-step explanation:
This is factoring trinomials, so x^2+ bx+c. In order to this you need to find two integers whose product is c and whose sum is b. Rewrite the trinomial as x2 + rx + sx + c and then use grouping and the distributive property to factor the polynomial. The resulting factors will be (x + r) and (x + s).
Step-by-step explanation:
6x^2 - 18x - 60 reducing it to a simplest form:
x^2 - 3x - 10
(x^2 - 5x) + (2x - 10)
x(x - 5) + 2(x - 5)
(x + 2)(x - 5)
you have an initial balance of $800 in your savings account that your parents started for you. you are currently withdrawing $40 per week. write an equation
Answer:
Step-by-step explanation:
Use the given functions to set up and simplify
week. 800 = 40 = week = we 2k
Help
Pls
Ion know the answers
Answer:
-3
Step-by-step explanation:
8.Suppose that the seriesPcn has radius of convergence 5 and the seriesPdn has radius of convergence 8. What is the radius of convergence of the seriesP(cn dn)xn
Answer and Step-by-step explanation:
Solution:
Suppose the series:
Ʃcnxn
has the radius of convergence 5,
and the series:
Ʃdnxn
has the radius of convergence 8.
find the radius of convergence of series:
Ʃ ( cn + dn) xn = Ʃcnxn + Ʃdnxn
The radius of convergence of the cn series falls within the radius of dn, series.
So, both will converges for at least |x| < 5.
If we say, x = 5.5, then we get the sum of divergent series plus a convergent series, for which overall result is divergent.
For example:
∞ + a constant, gives result in ∞.
The radius of convergence is the minimum radius for which both series converges,
Which is 5.
Hence, R = 5.
What is the slope of the following line y=5x - 2
Answer:
m = 5 is the answer
Step-by-step explanation:
use symbolab I use it all the time
Answer:
the slope is 5
Step-by-step explanation:
the formula is y=mx+b and in this case 5 is m which stands for the slope
