Answer:
False
Step-by-step explanation:
That is false
If the pre-image is reflected over any axis, the image will still be congruent to it
Teri and Lee are playing a game that consists of consists of spinning a spinner with eight equal spaces numbered 1 through 8, and then flipping two coins at the same time.
Terri wins 10 points if the spin is greater than 5 and the coins are different (one head and one tail).
Lee wins 15 points if the spin is an even number and the coins are both tails.
Is the game is fair or unfair? Why?
A.The game is not fair, because Terri’s expected value is 10(4/8)(2/4)=2.5 and Lee’s expected value is 15(4/8)(1/4)=1.875.
B.The game is fair, because Terri’s expected value is 10(3/8)(2/4)=1.875 and Lee’s expected value is 15(4/8)(1/4)=1.875.
C.The game is not fair, because Terri’s expected value is 10(38)(13)=1.25 and Lee’s expected value is 15(4/8)(1/3)=2.5.
Answer:
B. The game is fair, because Terri’s expected value is 10(3/8)(2/4)=1.875 and Lee’s expected value is 15(4/8)(1/4)=1.875.Step-by-step explanation:
ProbabilitiesTeri
10 points for spin > 5 and 2 coins are different3 spins out of 8 and 2 outcomes out of 410*(3/8)*(2/4) = 1.875Lee
15 points for spin is even number and 2 coins are both tails4 spins out of 8 and two same outcomes15*(4/8)*(1/2*1/2) = 1.875The game is fair as per the outcome above
Correct option is B.
6. A set of data points has a correlation coefficient r = -0.86. Your friend claims
that because the correlation coefficient is close to -1, it is reasonable to use the
line of best fit to make predictions. Is your friend correct? Explain your reasoning.
Answer:
Yes
Step-by-step explanation:
The line of best fit is used in linear regression models to make predictions, the line of best fit gives the relationship between the dependent and independent variables by obtaining the Coefficient of correlation. The Coefficient of correlation is a value which ranges from - 1 to 1. With values close to either - 1 or 1 depicting a strong negative and positive relationship respectively. Hence, with a correlation Coefficient of - 0.86, which signifies a strong negative relationship, then we can go ahead and make prediction using the model.
please help me solve this problem
How do you solve:
-3.6 = -8.5 - 8.1x - 8.6x
Answer:
The answer is x = − 0.29341317
Step-by-step explanation:
convert the mixed number into a decimal. 5 1/4 That is the fraction of 5 and 1/4
A. 5.25
B. 5
C. 525
D. 52.5
Answer:
The answer is A.
Step-by-step explanation:
I did it.
In a mid-size company, the distribution of the number of phone calls answered each day by each of the 12 receptionists is bell-shaped and has a mean of 48 and a standard deviation of 9. Using the Standard Deviation Rule (as presented in the book), what is the approximate percentage of daily phone calls numbering between 30 and 66?
Answer:
95.44%
Step-by-step explanation:
Mean (m) = 48
Standard deviation (sd) = 9
n = 12
Zscore = (x - m) /sd
X = 30
Zscore = (30 - 48) / 9
Zscore = - 2
X = 66
Zscore = (66 - 48) / 9
Zscore = 2
percentage of daily phone calls numbering between 30 and 66 = P(z < 2) - p(z < - 2)
P(z < 2) = 0.9772
P(z < - 2) = 0.0228
Hence,
0.9772 - 0.0228 = 0.9544
0.9544 * 100% = 95.44
a fish tank is in the shape of a cube the. volume of the fish tank is 64 cubic feet. What is the area of one face of the fish tank in square feet?
16 square feet (also can be written with an exponent 2 as in 16 ft^2)
Cube root of 64 is 4.
Why cube root? Because you need to multiply three numbers to get volume ( length, width, height.)
4x4 is 16.
Area, so you have to add the square feet
16 ft^2
Or
16 square feet
Pls mark branliest if this helped
According to the chart, which building took longer to construct: the Taipei 101 or the Petronas Towers?
Answer:
im not 100 percent sure but i think its the taipei 101
Step-by-step explanation:
im brain dead and i dont even trust myself but i passed the quiz so hope this helps
Answer:
C. they took the same amount of time
Step-by-step explanation:
A team has won 51 out of 68 games. Explain how to use the bar diagram to find the percent of games the team has won. A 2-column table with 5 rows. Column 1 has entries 25 percent, 25 percent, 25 percent, 25 percent. Column 2 has entries 17, 17, 17, 17, 68.
Answer:
a total number of games played would be 68
Answer:
In the diagram, 17 represents 25% of the total games. Since 17 times 3 equals 51, you use the first 3 columns to find an answer of 75%.
Step-by-step explanation: Make me brainliest plz
A polynomial function with a leading coefficient of 1 and multiplicity 1 for each root has these zeros:
-2√11
4
Which are factors of the polynomial? Check all that apply.
Answer:
1.
[tex]x - 2 \sqrt{11} [/tex]
2.
[tex]x + 2 \sqrt{11} [/tex]
5.
[tex]x - 4[/tex]
Step-by-step explanation:
It is correct on Edge!
Give thanks please!
Answer:
3
Step-by-step explanation:
edge 2022
solve the problem
1 . 5 x 0 . 3 = ?
Answer:
0.45
Step-by-step explanation:
1.5 × 0.3 = 0.45I hope this helps!
Question 7-9. If you don’t know 7 or 8 could you please just answer 9.
Answer:
The answer to #9 is 8.06
Step-by-step explanation:
I don't have time for the other questions tho sorry :/
What is the value of the expression 5y2 + 4x when x = 2.5 and y = 3?
Urgent!!
Use the model to solve for x.
answer: x=8
turn the picture into numbers
what is the factored form of x^3 + 125?
Answer:
(X+5)(x^2-5x+25)
Step-by-step explanation:
Emily is adding 51 and 29. Which steps can she use to add the numbers
Answer: She can first add 20 to 51, 51+20=71, then she can add 9, 71+9=80.
So 51 + 29 = 80
Step-by-step explanation: Hope this helps!
A weather balloon is launched in Texas from an altitude of 240 feet above sea level. If the balloon rises at a constant rate of 65 feet per
minute, which of the following equations could be used to find t, the time in minutes it will take the balloon to reach an altitude of 11,000
feet?
Onn
200
First off there is not any choices, second off the answer is it would take
165.5 minutes
It will take the balloon 165 minutes 30 seconds to reach an altitude of 11,000
What is a function?A function can be defined as the outputs for a given set of inputs.
The inputs of a function are known as the independent variable and the outputs of a function are known as the dependent variable.
Given, A weather balloon is launched in Texas from an altitude of 240 feet above sea level, and the balloon rises at a constant rate of 65 feet per minute.
Let the height of the balloon is h(t) where t represents time in minutes.
∴ The function that represents the height of the balloon at any point of time is h(t) = 65t + 240.
So, time required to reach the balloon an altitude of 11,000 feet is,
11000 = 65t + 240.
65t = 11000 = 240.
65t = 10760.
t = 10760/65.
t = 165.5 minutes or 165 minutes 30 seconds.
learn more about functions here :
https://brainly.com/question/12431044
#SPJ2
how old is molly and simba
rjpiejigdorihegourehguhreoghreoghoreghoregregre
99/225 simplified to the lowst term
Answer:
[tex]\frac{11}{25}[/tex]
Step-by-step explanation:
Answer:
11/25 the lowest this fraction can go.
Help!! Is it minimum or maximum??
1. Brand A scooter has a top speed that goes 2 miles per hour faster than Brand B. If after 3 hours, Brand A scooter traveled 24 miles at its top speed, at what rate did Brand B scooter travel at its top speed if it traveled the same distance? Write an equation to determine the solution. Identify the if-then moves used in your solution.
Answer:
6 miles/hr
Step-by-step explanation:
Given:
Top speed of Brand A scooter goes 2 miles per hour faster than Brand B.
Distance traveled by brand A scooter on its top speed in 3 hours = 24 miles
To find:
The rate at which brand B traveled the same distance at its top speed ?
Solution:
Let the top speed/rate of brand B scooter = [tex]x[/tex] miles/hr
According to question:
Top speed/rate of brand A scooter = [tex]x+2[/tex] miles/hr
Formula:
[tex]Distance = Speed \times Time[/tex]
Distance is given to be equal to 24 miles:
24 = ([tex]x+2[/tex]) [tex]\times 3[/tex] ...... (1)
Solving the above equation by first dividing the equation on both sides with 3:
[tex]\dfrac{24}{3} = \dfrac{(x+2)\times 3}{3}\\\Rightarrow 8 = (x+2)[/tex]
Now subtracting 2 from both the sides:
[tex]\Rightarrow 8-2=x+2-2\\\Rightarrow x=6\ miles/hr[/tex]
Therefore, the answer is:
Top speed of scooter B is 6 miles/hr.
The if-then moves used to solve the equation (1) are:
Dividing by a non zero number on both sides, then subtracting a number on both sides.
EMERGENCY PLEASE HELP (22 points)
Look at pic to see problem
Answer:
(-4, 7)
Step-by-step explanation:
x is found on the x axis its -4
to find y you go up to where the point bvb is it is located at positive 7
Answer:
(-4,7)
Step-by-step explanation:
This is the answer because the x-axis is -4, and the y-axis is 7. If it was put in any other way it would be wrong.
Convert 120 lbs to kilograms. (1 kg = 2.2 lbs)
Answer:
54.4
Step-by-step explanation:
Answer: 54.55kg
Step-by-step explanation:
120 ÷ 2.2 = 54.55 kg
-2x - 3(2x - 4) = 4(x – 6)
3(x - 2) = x + 2x - 5
Answer:
x = 3
No Solution
Step-by-step explanation:
-2x - 3(2x - 4) = 4(x – 6) this means x would equal 3 because if you isolate the variable by dividing each side by factors that don't contain the variable.
3(x - 2) = x + 2x - 5 would have no solution because there are no values of x that make the equation true.
9 – nx = 17nx solve for x Explain how to do it
What is the difference between -3 and -12?
O-15
O 15
O -9
O 9
Need Help ASAP
The following federal tax table is for weekly earnings of a single person.
(Table is in the picture I took)
How will the federal tax affect a gross weekly pay of $740 for a single person claiming 1 exemption?
Answer choices:
A.) It increases gross pay by $62
B.) It decreases gross pay by $62
C.) It increases gross pay by $65
D.) It decreases gross pay by $65
Answer:
id choose B but it could also be D
Step-by-step explanation:
either way I would still choose B
Which expression has a value of 60?
360 ÷ 60
3,600 ÷ 6
3,600 ÷ 60
3,600 ÷ 600
Jorge has been helping his little brother Angel learn his multiplication facts. Angel answered 40 flashcards and
got 16 facts correct. What percent of the flashcards did he get incorrect?
Plz anyone?
Answer:
he got 60 percent incorrect
Step-by-step explanation:
first do 16/40=.40 or 40%
the 100-40=60
soo 60%
Jessica is buying roses to sell at a fundraiser for school. She needs to purchase the roses at the lowest price per rose to allow for the highest profit margin. The roses are sold in bunches of 4, 6, 8, or 12. The chart below shows the prices for the different bunches of roses. Roses in Bunch Price 4 $7.98 6 $8.50 8 $10.25 12 $12.25 Based on the information in the chart, which size bunch would be the least expensive per rose? A. 4 B. 6 C. 8
Answer:
how do i comment
Step-by-step explanation: