At a large university, 15% of students are left-handed. A psychology professor selects a random sample of 10 students and records L = the number of left-handed students in the sample. Let 00-14 represent selecting a left-handed student.
Starting on line 2 of the random-number table, complete 4 trials of the simulation, and then enter the proportion (as a decimal) of these trials for which you obtained the number of successes shown in the table.
A =
B =
C =
D =
Answers
Answer:
A=.25
B=.25
C=.25
D=.25
Step-by-step explanation:
Related Questions
Since there are no restrictions on the strings, we can think of this problem as drawing 5 random digits in sequence. There is a 9/10 chance each time we draw to NOT get a 4. Every time we draw, we multiply by 9/10 again until we've draw 5 digits. Thus, the answer is (9/10)^5 :)
Answers
Answer:
[tex]Pr = 0.59049[/tex]
Step-by-step explanation:
See Comment for Complete Question
Given that A has 5 digits. A digit in A can be chosen from 0 to 9 (10 digits).
However, selection without 4 means that we can only select from 0 to 3 and 5 to 9 (altogether, that is 9 digits)
The probability of selecting a number other than 4 in each of the digit is:
[tex]1st \to \frac{9}{10}[/tex]
[tex]2nd \to \frac{9}{10}[/tex]
[tex]3rd \to \frac{9}{10}[/tex]
[tex]4th \to \frac{9}{10}[/tex]
[tex]5th \to \frac{9}{10}[/tex]
So, the required probability is:
[tex]Pr = 1st * 2nd * 3rd * 4th * 5th[/tex]
[tex]Pr = \frac{9}{10} *\frac{9}{10} *\frac{9}{10} *\frac{9}{10} *\frac{9}{10}[/tex]
[tex]Pr = \frac{9^5}{10^5}[/tex]
[tex]Pr = \frac{59049}{100000}[/tex]
[tex]Pr = 0.59049[/tex]
A plumber has a set fee for a house call and charges by the hour for repairs. The total cost of
her services, in dollars, can be modeled by p(t) = 110t + 85, where t represents the number
of hours the job takes. State the meaning of the slope and y-intercept of this function with
respect to the costs associated with the plumber's services. Please show work
Answers
Answer:
slope is the hourly rate of $110/hr
y-intercept is the set fee of 85
In circle H with m ∠ G H J = 90 m∠GHJ=90 and G H = 20 GH=20 units, find the length of arc GJ. Round to the nearest hundredth.
Answers
Answer:
180
Step-by-step explanation:
length of arc GJ ≈ 31.42 units.
What is the arc of a circle?A circle's arc is a bent portion of the circle's circumference. Its perimeter is determined by its two ends and the area of the circle that lies in between them. An arc's length or the angle it makes with the circle's center can be used to measure it.
The formula L = θr states that the length of an arc is inversely proportional to the radius of the circle and the angle it subtends. L is the length of the arc, r is the radius of the circle and θ is the angle the arc subtends in radians.
To find the length of arc GJ, we first need to find the circumference of the circle.
The circumference of a circle is given by the formula:
C = 2πr
where C is the circumference, π is a constant approximately equal to 3.14, and r is the radius of the circle.
Since GH = 20 units and HJ is the radius of the circle, we have:
HJ = GH = 20 units
So the radius of the circle is 20 units.
The formula for the length of the arc is 2πr(θ/360)
Since the angle is given 90, the length of the arc:
2*π*20(90/360)
=10 π
Therefore, the length of arc GJ is 10π or 31.42 units.
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wriye each expression with fewer terms.Show your work or explain your reasoning 10x-2x 10x-3y+2x
Answers
Answer:
20x-3y
Step-by-step explanation:
combine the like terms
so first do 10x-2x=8x
then you're gonna add from the line the 10x and the 2x which is going to give you 20x
no finally you are left with one number with the y variable, that is 3y.
Therefore your answer is 20x-3y
Which is the net for this rectangular prism?
Answers
Answer:
Bottom right option
Answer: i think bottom right
Step-by-step explanation:
I did the i-ready
Priya makes bracelets for her online store. Her monthly business expenses are $520. She sells an average of 80 bracelets per
month. Based on the inequality below, if she wants to profit at least $1,240, how much should she charge, b, per bracelet?
80b - $520 > $1,240
A. Priya needs to charge at most $19 per bracelet.
B. Priya needs to charge at least $22 per bracelet.
C. Priya needs to charge at most $22 per bracelet
D. Priya needs to charge at most $29 per bracelet.
Answers
Answer:
B
Step-by-step explanation:
Profit = total revenue - total cost
total revenue = 80 x b
total cost = 520
the profit has to be at least $1240
80 x 22 = 1760
1760 - 520 = 1240
b is correct
The Miami Zoo has 130 different exhibits. Of those 130 exhibits, 30% of that contain
birds.
How many exhibits DO NOT contain birds?
91
39
130
100
Pls answer and the answer is not 39 btw. Pls help quick if you don’t know the answer pls just don’t answer pls help and explain the steps. Help this is due in 10 minutes
Answers
Find the circumference of the circle.
5 mi
The circumference is mi
Answers
Answer:
31.40
Step-by-step explanation:
Have a wonderful Day!!!
Answer:
31.4
Step-by-step explanation:
When solving for these circumference questions, you must know the formula. The formula for circumference is 2πr (r represents radius)
1. Multiply 2 x 3.14 x 5
2. You will get your answer of 31.4
It's not hard if you know the formula :)
if you roll a dice one time what is the probability for it to land on a number greater than 2
Answers
Answer:
4/6
Step-by-step explanation:
This is because there is 6 sides to a dice and the side with 1 and 2 are the only sides with numbers less than 2. So only 4 sides out of the 6 can be greater giving the answer 4/6!
.Find the point of intersection of the pair of lines. x + 5y = 8, -x + 2y = -1
Answers
Answer:
the point of interception is where the graphs meets
in this case we will solve using substition method
x + 5y = 8 .... 1
-x + 2y = -1 .....2
solve for the equation
x = 8 - 5y ...... 3
solve the equation in equation 2
-x + 2y = -1
-(8-5y ) + 2y = -1
-8 +5y + 2y = -1
7y = -1 + 8
7y = 7
divided by 7 on both sides
y = 1
solve the value of y in equation 3
x = 8 - 5y
x = 8 - 5(1)
x = 8 -5
x = 3
the point of interception (3 ; 1)
What is the surface area,in square centimeters,of the square pyramid
Answers
Answer:
56 sq cm
Step-by-step explanation:
SA = Area of Base + 1/2·(Perimeter of Base)·(Slant height)
= 4² + 1/2(4x4)(5)
= 16 + 1/2(16)(5)
= 16 + 40
= 56
Can some one find the vertex for g(x)8x^2-14x+3 Using decimals if necessary
Answers
[tex]x_{v}[/tex]Answer:
The vertex of an up - down facing parabola of the formy = ax" + bx + c is xy =
The parabola params are:
a = 8, b = -14, c =3
[tex]x_{v}=b/2a[/tex]
[tex]x_{v}[/tex]=-(-14)/2·8
simplify
[tex]x_{v}[/tex]=-(-14)/2·8
[tex]x_{v} = 7/8[/tex]
Plug in [tex]x_{v}[/tex]=7/8to find the [tex]y_{v}[/tex] value
[tex]y_{v}[/tex]= -25/8
Therefore the parabola vertex is
(7/8 , -25/8)
If a < 0, then the vertex is a maximum value
If a > 0, then the vertex is a minimum value
a = 8
Minimum(7/8 , -25/8)
Please help me with 20,21 please
Answers
Answer:
Step-by-step explanation:
cool good luck
can someone help me on this question please
Answers
Answer:
y = -2x + 5 [ 1st option ]
Step-by-step explanation:
Consider any two points , say
(1,3) (2,1)Firstly let's find the slope of the line as ,
=> m = y₁ - y₂ / x₁ - x₂
=> m = 3-1 / 1-2
=> m = 2/-1
=> m = -2
Third point is, (3 , -1) . Using slope point form .
=> y - y₁ = m ( x - x₁ )
=> y - (-1) = -2( x - 3)
=> y + 1 = -2x +6
=> y +2x +1-6=0
=> y +2x -5 = 0
=> y = -2x + 5
On looking at options first one is correct
Hence the equation of line is y = -2x + 5.I need this because if I get these right I will bring m grade up to a c
Answers
Answer:
Question 2: x<-2
Question 6: 1.75 + 0.65m ≤ 10
Question 3: x ≥ -40
Question 4: Graph B
Step-by-step explanation:
Question 2:
since it needs to be greater than 11, we should add a number greater than 4 to seven. so it would be x>2. but since we are subtracting, we turn the 2 negative and flip the sign. Now it would be x<-2
Question 6:
the flat fee is 1.75 and they pay an additional 0.65 for every mile.
We know that the price has to be either less than or equal to 10. And the symbol is ≤. The inequality is 1.75 + 0.65m ≤ 10
Question 3 :
subtract 3 from both sides:
x/4 + 3 - 3 ≥-7 - 3
x/4≥-10
multiply each side by 4
x/4 * 4 ≥ -10 * 4
x ≥ -40
Question 4:
-3x-5 < -2
add 5 to both sides
-3x -5 + 5 < -2 + 5
-3x < 3
divide by -3
-3x / 3 < 3/3
x>-1
If my answer is incorrect, pls correct me!
If you like my answer and explanation, mark me as brainliest!
-Chetan K
Exactly how do you find the area? (I already know I need to split the prisms, but how would you do this?)
Answers
Answer:
The simplest (and most commonly used) area calculations are for squares and rectangles. To find the area of a rectangle, multiply its height by its width. For a square you only need to find the length of one of the sides (as each side is the same length) and then multiply this by itself to find the area.
Step-by-step explanation:
Answer:
You know the with and the length and height of all of them so just do math :)
Step-by-step explanation:
HELPP PLEASEEE
NO LINK!!
Answers
Answer:
the g
[tex]graph \: increseas \: then \: decreaes[/tex]
which of the following points would be a solution to this system of liner inequalities?
Answers
Answer:
The solution to the system is all the points that satisfy both inequalities or the region in which the shading overlaps. Given the system of linear inequalities shown in the graph, let's determine which points are solutions to the system. The point (0, -1) is not a solution to the system of linear inequalities.
Step-by-step explanation:
thank me later
An .
Step-by-step explanation:
how cares
what is ( 40 + 40 ) + 6-1 ? it's an iready problem
Answers
70 = 10 x 7
Which statement BEST describes the relationship shown in
the equation.
A) 70 is 10 greater than 7
B) 10 is 7 times larger than 70
C) 70 is 10 times as many as 7
D) 70 is 7 plus 10
Answers
Answer:
C
Step-by-step explanation:
Given the three functions: f(x)=4(2) g(x)=8x² + 24x , and h(x)= 4x + 8
Label each function as quadratic, linear, or exponential.
f(x)=
g(x)=
h(x)=
Answers
Answer:
f(x)=exponential
g(x)= quadratic
h(x)= linear
Step-by-step explanation:
exponential function
[tex] {ab}^{x} [/tex]
Quadratic function
[tex]a {x}^{2} + bx + c[/tex]
Linear function
[tex]y = mx + c[/tex]
Hi there!
[tex] \large \boxed{ y = {a}^{x} \: \: (a \neq 0, \: a > 1)}[/tex]
The equation above is an exponential family type.
[tex] \large \boxed{y = a {x}^{2} + bx + c \: \: (a \neq 0)}[/tex]
The equation above is quadratic type.
[tex] \large \boxed{ y = mx + b}[/tex]
The last type above is a linear type.
Hence, the answers are:
f(x) = exponentialg(x) = quadratich(x) = linearJay wants to spend less than $80 He plans to buy a pair of jeans that cost $19.99 and some shirts that cost \$14.99 each Write an equation or inequality to represent the number of shirts Jay can buy Define all variables used • What is the greatest number of shirts that Jay can buy while spending less than $80 ? Show your work
Answers
Answer:
give me brainllest if it is right
a. $19.99 + $14.99 = $34.98
b. Jay can buy 5 shirts without spending more than $80
Step-by-step explanation:
Books read by different students : 5,7,8,10,12,13,29
Answers
Answer:
What are you asking for the mean?
Step-by-step explanation:
Find the value of K, for which 7k - 7-2 = 75
Answers
Answer:
7k-7-2=75
7k-9=75
7k=75+9
k=84/7
k=12
Step-by-step explanation:
PLEASE MAKE ANSWER CLEAR
Sandy has a total of 35 coins in her money jar. If Sandy's jar contains only nickels and dimes and the value ol
the coins is $2.50, how many nickels does Sandy have?
Answers
let nickel be x, dime be y
x + y = 35 ... ( 1 )
5x + 10 y = 250
5 ( x + 2y ) = 250
x + 2y = 50 ... ( 2 )
in ( 1 )
x = 35 - y ( 3 )
sub ( 3 ) into ( 2 )
( 35 - y ) + 2y = 50
y = 15
sub y into ( 1 )
x + y = 35
x + 15 = 35
x = 20
therefore, Sandy has 20 nickels and 15 dimes
Triangle OPQ is similar to triangle RST. Find the measure of side ST. Round
your answer to the nearest tenth if necessary.
T
Q
17.5
O
P
13
R
S
60
Answers
Answer: 80.8
Step-by-step explanation:
Ayee just trust me
7676767676767676767676767
Answers
Answer:
uhhh is this a trick question lol
have a good day :D
Step-by-step explanation:
PLEASE HELP ME OUT. I am struggling bad
Answers
Answer:
WXV=87° because they are opposite angle
Step-by-step explanation:
frist we need to find TU
TU=1/2×87°
TU=43.5
WSTU is half circle =180°
WS+ST+TU=180°
72°+43.5+ST=180°
115.5+ST=180°
ST=180°-115.5
ST=64.5°
the measurement of UV=wu-x
UV=180°-87°
UV=93° the inner angle that made by UV
the arc of UV1/2=93° cross production
UV=46.5
vst i didn't understand
i help you???
Which equation can be used to calculate the output
values in the table?
Input (x)
Output(y)
1
2
4
WN
6
4
8
5
10
Answers
The equation can be used to calculate the output values in the table is y = 2x.
What is the equation?A equation can be defined as a mathematical statement consisting of an equal symbol between two algebraic expressions that have the same value.
The equation can be used to calculate the output values in the table is determined in the following equation.
The equation is;
y = 2x
When the value of y = 4 the value of x is;
y = 2x
4 = 2x
x = 4/2
x = 2
When the value of y = 6 the value of x is;
y = 2x
6 = 2x
x = 6/2
x = 3
When the value of y = 8 the value of x is;
y = 2x
8 = 2x
x = 8/2
x =4
When the value of y = 10 the value of x is;
y = 2x
10 = 2x
x = 10/2
x = 5
Hence, the equation can be used to calculate the output values in the table is y = 2x.
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A researcher spoke to 20 people running a marathon in which 1,400 people participated. Of those 20 people, 5 competed only in professional sporting events, 12 competed in only amateur sporting events, and the rest competed in both. What was the population size for this study?
A. 5
B. 12
C. 20
D. 1,400
Answers
Answer:
Step-by-step explanation:
The population size is everybody running the race. It does not include people watching the race and it is not confined to just the 20 people the researcher talked to.
If it doesn't limit itself to the 20 people, then the 5 and 12 and 3 people are also too limiting.