Answer:
the answer is a
Step-by-step explanation:
because the pattern multiplies by 2 for the y axis and for the x axis it just goes up 1
Answer:
answer C is coreect
Step-by-step explanation:
Question
Henry has collected data to find that the
typing speeds for the students in a typing
class has a normal distribution. What is the
probability that a randomly selected student
has a typing speed of less than 51 words per
minute if the mean (u) is 47 words per
minute and the standard deviation (o) is 4
words per minute? Use the empirical rule.
• Provide the final answer as a percent.
Provide your answer below:
%
The probability that a randomly selected student has a typing speed of less than 51 words per minute if the mean (u) is 47 words per minute and the standard deviation (o) is 4 words per minute is; 68%
How to use empirical formula in statistics?The empirical rule in statistics states that for normal distributions, 68% of observed data points will lie inside one standard deviation of the mean, 95% will fall within two standard deviations, and 99.7% will occur within three standard deviations.
The formula for z-score is;
z = (x' - μ)/σ
where;
x' is sample mean
μ is population mean
σ is standard deviation
We are given;
x' = 51
μ = 47
σ = 4
Thus;
z = (51 - 47)/4
z = 1
From empirical formula at 1 standard deviation above the means, the probability is 68%.
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In a recent survey of 36 people, 18 said that their favorite color of car was blue.
What percent of the people surveyed liked blue cars? Explain your answer with every step you took to get to it.
Answer: The percentage of people surveyed who liked blue cars is 50%.
Step-by-step explanation:
Total number of people partaking in survey= 36
number of people who like blue cars= 18
therefore, fraction of people who liked blue cars= \(\frac{18}{36}\)
hence, percentage of people who liked blue cars= (18/36)*100 %
= 50%
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Answer:
Percentage of people who like blue-coloured cars is 50%
Number of people who were surveyed=36
Number of people who like blue-colored cars=18
Therefore, Percentage of people who like blue cars= (Number of people who like blue cars/ Number of people who were surveyed)*100
=(18/36)*100
=50%
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What type of angles are ∠4 and∠6?
Question 2 options:
adjacent angles
alternate exterior angles
alternate interior angles
corresponding angles
none of these
Answer:
None of these
Step-by-step explanation:
For adjacent, they are not next to each other.
For alternate exterior, both are not exterior.
For alternate interior, both are not interior.
For corresponding, they are not along the same line.
That leaves us with the answer none of these.
Hope that helps!
A and B are mutually exclusive events. P(A) = 0.20 and P(B) =
0.50.
What is P(A or B)?
3x + y=5
6x -2y=10 Is it consistent/non consistent and need solution
once i see how to do one ill understand how to do others. thank you
Answer: These are non- consistent and can be solved. The signs of the y terms are the opposite.
Step-by-step explanation: If the signs are the same, and all the terms of one equation are multiples of the other, they are identies, with infinite solutions. We can solve this system by multiplying the first equation by 2, adding the equations to cancel the y terms, and solve for x.
2(3x+y=5) becomes
6x +2y= 10 Add it to the other equation
6x -2y= 10 We are left with
12x = 20 Solve for x
x = 5/3 Substitute for x and solve for y.
3(5/3) + y = 5
5 + y = 5. Subtract 5 from both sides.
y = 0
The solution to this system is (5/3 , 0)
I need help with this
look at picture
Complementary angles
18°
Mark as brainlist......
Answer:
18 degrees.
Step-by-step explanation:
....you welcome
someone please answer this its confusing me
7 pounds of turkey cost $24.64. What is the price per ounce?
Find the area of a trapezoid with:
Base 1: 8
Base 2: 5
Height: 8
Area =
Answer:
52
Step-by-step explanation:
8+5=13
13x8=104
104/2=52 (divided)
Answer:
52
Step-by-step explanation:
I took the test
Si tengo 10 melones y voy a repartir entre 15 niños cuánto le toca a cada uno
Answer:
0.66 melones por niño o 2/3
Step-by-step explanation:
10/15=2/3=0.66
NO LINKS!!! URGENT HELP PLEASE!!
1. If P dollars is deposited in a savings account that pays interest at a rate of r% per year compounded continuously, find the balance after t years. Round your answer to the nearest cent
P = 120
r = 2 1/2
t = 8
2. An investment of P dollars increased to A dollars in t years. If the interest was compounded continuously, find the interest rate. Round your answer to the nearest whole number
A = 4055
P = 1000
t = 20
______%
Answer:
1: the balance after 8 years is approximately $151.78.
2: is approximately 7%.
Step-by-step explanation:
1: The balance after t years with continuous compounding can be calculated using the formula:
B = Pe^(rt)
Where:
P = 120 dollars (initial deposit)
r = 2.5% = 0.025 (interest rate in decimal form)
t = 8 years
Substituting these values into the formula, we get:
B = 120e^(0.025*8) ≈ 151.78
Therefore, the balance after 8 years is approximately $151.78.
2: The interest rate can be found using the formula:
A = Pe^(rt)
Taking the natural logarithm of both sides and solving for r, we get:
r = ln(A/P) / t
Where:
A = 4055 dollars (final amount)
P = 1000 dollars (initial investment)
t = 20 years
Substituting these values into the formula, we get:
r = ln(4055/1000) / 20 ≈ 0.0774
Converting to a percentage and rounding to the nearest whole number, we get:
r ≈ 7%
Therefore, the interest rate, if compounded continuously, is approximately 7%.
Answer:
1. $146.57
2. 7%.
Step-by-step explanation:
1.
The formula for continuous compounding is:
A = Pe^(rt)
Where:
A = the balance after t years
P = the principal amount
r = the annual interest rate (expressed as a decimal)
t = the time in years
To use this formula, we first need to convert the annual interest rate to a decimal:
r = 2 1/2 = 2.5%
r = 2.5/100 = 0.025
Now we can plug in the values:
A = 120e^(0.025*8)
A ≈ $146.57
Therefore, the balance after 8 years is approximately $146.57
2.
The formula for continuous compounding is: A = Pe^(rt)
Where:
A = the balance after t years
P = the principal amount
r = the annual interest rate (expressed as a decimal)
t = the time in years
We can rearrange this formula to solve for the interest rate:
r = ln(A/P)/t
Where ln represents the natural logarithm.
Now we can plug in the given values:
r = ln(4055/1000)/20
r ≈ 0.069or 7.1%
Therefore, the interest rate, rounded to the nearest whole number, is 7%.
two third of 15 is equal to 2/5 of what number?
A. 20
B. 12
C. 25
D. 60
If you have a cylinder of 10 pennies and the mass of that cylinder is 30.0g and the mass of the cylinder is 4.50g, what is the average mass, average volume, and average density of a single penny?
Answer:
3
Step-by-step explanation:
ye
please help me asap
Answer:
Step-by-step explanation:
it is B
social distancing summary of event please help me i really need help please
Step-by-step explanation:
Social distancing means keeping a safe space between yourself and other people who are not from your household.Which of the following systems of inequalities has point D as a solution?
Answer:
f(x) \(\leq\) 3x + 4
g(x) ≥ -1/2x - 5
Step-by-step explanation:
Point D is below f(x) and above g(x)
Helping in the name of Jesus.
1. Đường kính của một loại trục máy là một đại lượng ngẫu nhiên có phân phối chuẩn N (μ = 250mm, σ2 = 25mm2). Trục máy được gọi là hợp quy cách nếu đường kính từ 245mm đến 255mm. Cho máy sản xuất 100 trục. Tính xác suất để:
a. Có 50 trục hợp quy cách.
b. Có không quá 80 trục hợp quy cách
Answer:
please ask in English
Step-by-step explanation:
then I can help
What is the equation for the line?
Answer:it may be the first one but I can’t see the lines on the graph clearly.
Step-by-step explanation:
12.
The ratio of boys to girls in a class is 3:7. Write down the fraction of the class who are boys.
Answer:
let tle number of boys and girls be 2x and3x
Step-by-step explanation:
like this solve the question
What is the mode of the data set shown below?
{10, 2, 8, 9, 5, 2, 6}
A. 42
B. 7
C. 6
D. 2
Answer:
D. 2
Step-by-step explanation:
The mode is the number in the data set that appears the most often. 2 appears twice while the others only appear once so 2 is the mode.
Answer:
2
Step-by-step explanation:
The way that you're to find the mode of a data set is by putting the numbers in order (so 2, 2, 5, 6, 8, 9, 10) then whichever number repeats itself the most is the mode.
Please Mark as Brainliest
Hope this Helps
Melissa got 18 out of 20 on a math quiz. Tom got 85% on the quiz. Whose mark was greater? (Show all of your proof
Answer:
Melissa
Step-by-step explanation:
Melissa: 18/20
Tom: 85/100
Find the common denomenater so multiply 18*5 and 20*5
Melissa: 95/100
95>85
Melissa has the greater mark
I dunno how to write this, so ask any question in the comments.
Using the two coordinates (2,5) , (-2,-1), find the standard form equation. (slope is 3/2 if that helps)
Step-by-step explanation: 4/5, 2/5
I hope this helps.
What is the approximate value of θ if tan θ = 7/9
Answer:
37.9°-----------------------
Taking the inverse tangent (arctan) of the given ratio 7/9.
Use a calculator or trigonometric table to find:
θ ≈ arctan(7/9)The approximate value of θ is 37.9°.
If m∠J = 44°, what is m∠I?
Answer:
6666
Step-by-step explanation:
Alice and Bob each have a certain amount of money. If Alice receives n dollars from Bob, then she will have 7 times as much money as Bob. If, on the other hand, she gives n dollars to Bob, then she will have 2 times as much money as Bob. If neither gives the other any money, what is the ratio of the amount of money Alice has to the amount Bob has?
The ratio of the amount of money Alice has to the amount Bob has is approximately 3.36 : 1.
How to find the ratio of money ?According to the problem, two equations can be set up:
If Alice receives n dollars from Bob, then she will have 7 times as much money as Bob. This gives us the equation:
A + n = 7(B - n)
If Alice gives n dollars to Bob, then she will have 2 times as much money as Bob. This gives us the second equation:
A - n = 2(B + n)
We can rearrange these equations to make them easier to solve:
8n = 7B - A
3n = A - 2B
Setting these equal to each other, since they are both equal to 24n, gives:
21B - 3A = 8A - 16B
37B = 11A
A / B = 37 / 11
= 3. 36
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Which equation represents a line that passes through (5, 1) and has a slope of StartFraction one-half EndFraction?
y – 5 = y minus 5 equals StartFraction one-half EndFraction left-parenthesis x minus 1 right-parenthesis.(x –1)
y – y minus StartFraction one-half EndFraction equals 5 left-parenthesis x minus 1 right-parenthesis. = 5(x –1)
y – 1 = y minus 1 equals StartFraction one-half EndFraction left-parenthesis x minus 5 right-parenthesis.(x –5)
y – 1 = 5y minus 1 equals 5 left-parenthesis x minus StartFraction one-half EndFraction right-parenthesis.
Step-by-step explanation:
Slope 1/2 point 5,1
in point slope form would be
(y-1) = 1/2 (x-5)
What is the value of x ???
Answer:
x = 5
Step-by-step explanation:
Use properties of congruent triangles, which states that corresponding sides are proportional.
Set up the proportion:
\(\frac{4x}{15} = \frac{3x+1}{12}\)
Cross multiply:
12(4x) = 15(3x+1)
Distribute:
48x = 45x + 15
Isolate variable term on one side (by subtracting 45x from both sides):
3x = 15
Divide by 3 to solve for x:
x = 5
A car travels for 7 hours at 55 miles per hour. Use the formula d = r. t, where d =
distance, r = rate, and t = time, to find the distance the car traveled.
The distance traveled is
miles.
The solution is
The distance traveled is 385miles
PLEASE HELP!!! What was the total amount of all checks Shamar deposited?
$426.30
$681.81
$908.11
$1108.11
Answer:
$1108.11
Step-by-step explanation: i got it right on the test.
The total amount of all checks Shamar deposited is $681.81.
What is addition?Addition in math is a process of combining two or more numbers.
Given are amount in checks =
Check first = $245.14
Check second = $120
Check third = $316.67
To find the total amount we will add the elements,
The sum of the element =
Total sum = 245.14 + 120 + 316.67
Total sum = $681.81
Hence, the total amount of all checks Shamar deposited is $681.81
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PLEASE HELP!! I Need a passing grade
Answer:
(-8, 10)
Step-by-step explanation:
9x + 7y = -2
9(-8) + 7y = -2
-72 + 7y = -2
7y = 70
y = 10