SOMEONE PLSS HELP!
Dwayne’s goal is to run 1 mile in 8 minutes or less. In order to predict when he will reach his goal, he drew a trend line that fits along the data points. He extended the trend line to week 8. According to the line, will he reach his goal by week 7? By week 8?
Answers
Answer:
where's the line? Can't answer it without it.
Related Questions
where can I get study guide help for algebra 2 thank you
Answers
Answer:
Stay after school more often with your math teacher or come early to school to practice math or to see what your stuggling at.
5/7x = 365 what is x?
Answers
Answer:
511
Step-by-step explanation:
Multiply both sides by 7/5
Answer:x=511
Step-by-step explanation:
Step 1: Multiply both sides by 7/5.
(7/5)*(5/7x)=(7/5)*365
X=511
Elevator ride: Engineers are designing a large elevator that will accommodate 56 people. The maximum weight the elevator can hold safely is 11,144 pounds. According to the National Health Statistics Reports, the weights of adult U.S. men have mean 196 pounds and standard deviation 71 pounds, and the weights of adult U.S. women have mean 169 pounds and standard deviation 80 pounds. Use the TI-84 Plus calculator.
Part 1 of 3 (a) If 56 people are on the elevator, and their total weight is 11,144 pounds, what is their average weight? The average weight is pounds.X
Part 2 of 3 (b) If a random sample of 56 adult men ride the elevator, what is the probability that the maximum safe weight will be exceeded? Round the answer to at least four decimal places. The probability that the maximum safe weight will be exceeded is _______.
Part 3 of 3 (c) If a random sample of 56 adult women ride the elevator, what is the probability that the maximum safe weight will be exceeded? Round the answer to at least four decimal places. The probability that the maximum safe weight will be exceeded is________.
Answers
Answer:
a) The average weight is 199 pounds.
b) The probability that the maximum safe weight will be exceeded is 0.4840 = 48.40%.
c) The probability that the maximum safe weight will be exceeded is 0.3539 = 35.39%.
Step-by-step explanation:
Normal Probability Distribution:
Problems of normal distributions can be solved using the z-score formula.
In a set with mean \(\mu\) and standard deviation \(\sigma\), the zscore of a measure X is given by:
\(Z = \frac{X - \mu}{\sigma}\)
The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.
(a) If 56 people are on the elevator, and their total weight is 11,144 pounds, what is their average weight?
This is 11144 divided by 56, that is 11144/56 = 199 pounds.
Their average weight is 199 pounds.
(b) If a random sample of 56 adult men ride the elevator, what is the probability that the maximum safe weight will be exceeded?
The weights of adult U.S. men have mean 196 pounds and standard deviation 71 pounds, which means that \(\mu = 196, \sigma = 71\)
11144 pounds is an average of 199 pounds, so this probability is 1 subtracted by the pvalue of Z when X = 199.
\(Z = \frac{X - \mu}{\sigma}\)
\(Z = \frac{199 - 196}{71}\)
\(Z = 0.04\)
\(Z = 0.04\) has a pvalue of 0.5160
1 - 0.5160 = 0.4840
The probability that the maximum safe weight will be exceeded is 0.4840 = 48.40%.
(c) If a random sample of 56 adult women ride the elevator, what is the probability that the maximum safe weight will be exceeded?
The weights of adult U.S. women have mean 169 pounds and standard deviation 80 pounds, which means that \(\mu = 169, \sigma = 80\)
11144 pounds is an average of 199 pounds, so this probability is 1 subtracted by the pvalue of Z when X = 199.
\(Z = \frac{X - \mu}{\sigma}\)
\(Z = \frac{199 - 169}{80}\)
\(Z = 0.375\)
\(Z = 0.375\) has a pvalue of 0.6461
1 - 0.6461 = 0.3539
The probability that the maximum safe weight will be exceeded is 0.3539 = 35.39%.
Need help on this thank you
Answers
Answer:
D 1331
Step-by-step explanation:
since it already gave you the length for the bottom line it's also going to be 11cm for the other 3 lines
Which of the following is an Equivalent Fraction to: 3/8
Answers
Answer:
Step-by-step explanation: 8/3is equivalent fraction to three
Answer:
9/24
Step-by-step explanation:
The diameter of a circle is 9 cm. Find the circumference to the nearest tenth to the nearest tenth
Answers
Answer:28
Step-by-step explanation:
•C= 2(3.14 x r)
•C= 2(3.14 x4.5)
•C=2(14.13)
•C=28.26
Allowance bank received a deposit of 28,000 and is free to lend out 25,480 what is the reserve rate?
Answers
Answer:
Reserve rate = 9%
Step-by-step explanation:
Reserve ratio/rate is the percentage of deposits which commercial banks are required to keep as cash, as directed by the central banks.
first, let us calculate the reserve amount as follows:
Reserve = Deposit - (free amount to lend out)
Reserve = 28,000 - 25,480 = $2,520
\(Reserve\ rate = \frac{Reserves}{Deposits} \times100\\Reserve\ rate = \frac{2520}{28000} \times100\\=\frac{252000}{28000} =9\%\)
Therefore the reserve rate = 9%
A researcher was interested in the impact of listening to different types of music on learning. She designed an extensive maze for rats and after she taught rats how to get through the maze, she randomly assigned each rat to run the maze while (a) listening to classical music, (b) listening to heavy metal music, or (c) in a quiet room (i.e., no music). The researcher measured the amount of time it took each rat to get through the maze and the number of errors made.
a. Independent Variable ? _________________ What are the levels? ________________________________
b. Dependent Variable ? _____________________________
c. What might be an extraneous variable?: ___________________________________
d. Control group? _________________ Experimental Group(s)?____________________
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a.) The independent variable is the different types of music
b.) The dependent variable is the impact of listening felt by the rats
c.)An extraneous variable is the length of the maze.
d.) The control group is the rat in the quite room while the experimental groups are the ones in the maze listening to classical music, and listening to heavy metal music.
What is an independent and dependent variables?An independent variable is defined as the type of variable that cannot be manipulated by a researcher and isn't affected by what is being measured.
A dependent variable is the variable that can be manipulated by a researcher and is affected by what is being measured.
For question a.)
The independent variable is the different types of music
For question b.)
The dependent variable is the impact of listening felt by the rats
For question c.)
An extraneous variable is the length of the maze.
For question d.)
The control group is the rat in the quite room while the experimental groups are the ones in the maze listening to classical music, and listening to heavy metal music.
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6. Which of the following strategies can
help you solve 4 x 6? Select all that
apply.
(6x6) + (6 x 6)
(4 x 3) + (4 x 3)
(5x5)+(4x 1)
(5x4) + (1x4)
(2x4) + (2x6)
Answers
Answer:
(4x3) + (4x3) and (5x4) + (1x4)
Step-by-step explanation:
When you multiply 4 by 3 you get 12. And 12 + 12 is 24. 4 x 6 is 24 so then that is an answer. And 5 by 4 is 20 and 1 x 4 is 4 you add them you get 24.
Given a number n, for each integer i in the range from 1 to n inclusive, print one value per line as follows: • If iis a multiple of both 3 and 5, print FizzBuzz. • If iis a multiple of 3 (but not 5), print Fizz. • If iis a multiple of 5(but not 3), print Buzz. • If i is not a multiple of 3 or 5, print the value ofi. Function Description Complete the function fizzBuzz in the editor below. fizzBuzz has the following parameter(s): int n: upper limit of values to test (inclusive) Returns: NONE Prints: The function must print the appropriate response for each value i in the set {1, 2, ... n}in ascending order, each on a separate line. Constraints • 0
Answers
The program is an illustration of loops and conditional statements and the part of the complete program is
n = int(input())
for i in range(1,n+1):
if not(i%3 == 0 or i%5==0):
How to determine the program using the conditions?The program written in Python where comments are used to explain each line is as follows:
#This gets input for n
n = int(input())
#This iterates through n
for i in range(1,n+1):
#If the current number is not a multiple of 3 and 5
if not(i%3 == 0 or i%5==0):
#This prints the number
print(i,end="")
else:
#This prints "Fizz", if the current number is a multiple of 3
if i%3 == 0:
print("Fizz",end="")
#This prints "Buzz", if the current number is a multiple of 5
if i%5==0:
print("Buzz",end="")
#This prints a new line
print()
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What is 0.05 is 10 as much as
Answers
Answer:
0.005
Step-by-step explanation:
what does 3 1/3 yard equal to in inches
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Answer:
it is 120 i believe
Step-by-step explanation:
Answer: 120
Step-by-step explanation:
a yard is 3 feet
a foot is 12 inches
10ft x 12in = 120in
the density of the copper is 9.86g/cm\(x^{3}\)
![the density of the copper is 9.86g/cm[tex]x^{3}[/tex]](https://i5t5.c14.e2-1.dev/h-images-qa/contents/attachments/kBdJoEKedYKgyZmbWgXrufRB5h52H33f.png)
Answers
The mass of the cubic cuboid is 1.479 kilograms.
What is the mass of a copper cuboid?
Dimensionally speaking, density (ρ), in kilograms per cubic meter, is mass (m), in kilograms, per unit volume (V), in cubic meters. By the assumption of uniform density within the copper cuboid, the mass of the solid is equal to:
m = ρ · V
Where V is the volume of cuboid, in cubic meters.
And the volume of cuboid is:
V = w · h · l
Where:
w - Width, in meters. h - Height, in meters.l - Length, in meters.Please notice that a kilogram equals 1000 grams and a meter equals 100 centimeters.
First, calculate the volume of the cuboid:
V = (0.05 m) · (0.03 m) · (0.10 m)
V = 1.5 × 10⁻⁴ m³
Second, determine the mass of the cuboid:
m = (9.86 g / cm³) · (1 kg / 1000 g) · (1000000 cm³ / m³) · (1.5 × 10⁻⁴ m³)
m = 1.479 kg
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The following data represent the age (in weeks) at which 10 randomly selected babies crawled for the first time. 43, 44, 42, 31, 38, 45, 36, 39, 50, 52 Suppose that the data is a random sample from a population with a normal distribution. Construct a 90 confidence interval for the average age at which babies first crawl.
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Answer:
\(42-1.833\frac{6.325}{\sqrt{10}}=38.334\)
\(42+1.833\frac{6.325}{\sqrt{10}}=45.666\)
The 90% confidence interval is given by \( 38.334 \leq \mu \leq 45.666\)
Step-by-step explanation:
Notation
\(\bar X\) represent the sample mean
\(\mu\) population mean (variable of interest)
s represent the sample standard deviation
n represent the sample size
Confidence interval
The confidence interval for the mean is given by the following formula:
\(\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}\) (1)
In order to calculate the mean and the sample deviation we can use the following formulas:
\(\bar X= \sum_{i=1}^n \frac{x_i}{n}\) (2)
\(s=\sqrt{\frac{\sum_{i=1}^n (x_i-\bar X)}{n-1}}\) (3)
The mean calculated for this case is \(\bar X=42\)
The sample deviation calculated \(s=6.325\)
The degrees of freedom are given by:
\(df=n-1=10-1=9\)
The Confidence level is 0.90 or 90%, the significance is \(\alpha=0.1\) and \(\alpha/2 =0.05\), and the critical value would be \(t_{\alpha/2}=1.833\)
Replacing we got:
\(42-1.833\frac{6.325}{\sqrt{10}}=38.334\)
\(42+1.833\frac{6.325}{\sqrt{10}}=45.666\)
The 90% confidence interval is given by \( 38.334 \leq \mu \leq 45.666\)
Find the center and radius of the circle represented by the equation below.
Answers
Answer:
centre = (5, - 6 ) , radius = 7
Step-by-step explanation:
the equation of a circle in standard form is
(x - h)² + (y - k)² = r²
where (h, k ) are the coordinates of the centre and r is the radius
given
x² + y² - 10x + 12y + 12 = 0 ( subtract 12 from both sides )
x² + y² - 10x + 12y = - 12 ( collect terms in x/ y )
x² - 10x + y² + 12y = - 12
using the method of completing the square
add ( half the coefficient of the x/ y terms )² to both sides
x² + 2(- 5)x + 25 + y² + 2(6)y + 36 = - 12 + 25 + 36
(x - 5)² + (y + 6)² = 49 = 7² ← in standard form
with centre (5, - 6 ) and radius = 7
Answer:
Center = (5, -6)
Radius = 7
Step-by-step explanation:
To find the center and the radius of the circle represented by the given equation, rewrite the equation in standard form by completing the square.
To complete the square, begin by moving the constant to the right side of the equation and collecting like terms on the left side of the equation:
\(x^2-10x+y^2+12y=-12\)
Add the square of half the coefficient of the term in x and the term in y to both sides of the equation:
\(x^2-10x+\left(\dfrac{-10}{2}\right)^2+y^2+12y+\left(\dfrac{12}{2}\right)^2=-12+\left(\dfrac{-10}{2}\right)^2+\left(\dfrac{12}{2}\right)^2\)
Simplify:
\(x^2-10x+(-5)^2+y^2+12y+(6)^2=-12+(-5)^2+(6)^2\)
\(x^2-10x+25+y^2+12y+36=-12+25+36\)
\(x^2-10x+25+y^2+12y+36=49\)
Factor the perfect square trinomials on the left side:
\((x-5)^2+(y+6)^2=49\)
The standard equation of a circle is:
\(\boxed{(x-h)^2+(y-k)^2=r^2}\)
where:
(h, k) is the center.r is the radius.Comparing this with the rewritten given equation, we get
\(h = 5\)\(k = -6\)\(r^2 = 49 \implies r=7\)Therefore, the center of the circle is (5, -6) and its radius is r = 7.
Complete the table below to solve the equation 2.5x − 10.5 = 64(0.5x)
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| x | 2.5x - 10.5 | 64(0.5x) |
|-------|-----------------|--------------|
| 0 | -10.5 | 0 |
| 2 | 2 | 64 |
| 4 | 7 | 128 |
| 6 | 11 | 192 |
By substituting different values of x into the equation, we can see that there is no single value of x that satisfies the equation for both sides. Therefore, there is no solution to the given equation.
What is the solution to the inequality -3x - 5 < -20?
Answers
Answer:
x > 5
Step-by-step explanation:
Answer:
we have -3x < -15,
so
3x > 15,
x > 5
brainliest please?
An airplane can reach a speed of 650 miles per hour. What is the unit rate per minute?
Answers
Answer:
10.8333 miles per minute
Step-by-step explanation:
Solve for x: one over five (5x + 12) = 18 (5 points)
a
seventy-eight over five
b
one hundred-two over five
c
6
d
30
Answers
Step-by-step explanation:
(1x+12/5)=18
X=18-12/5
X=15..6
Answer:
hello
Step-by-step explanation:
the perimeter of a semicircle protractor is 14.8cm,find it's radius
Answers
The radius of the semicircle protractor is approximately 4.693 cm.
Given,Perimeter of a semicircle protractor = 14.8 cm.
To find:The radius of a semicircle protractor.Solution:We know that the perimeter of a semicircle protractor is the sum of the straight edge of a protractor and half of the circumference of the circle whose radius is the radius of the protractor.
Circumference of a circle = 2πrWhere, r is the radius of the circle.If the radius of the semicircle protractor is r, then Perimeter of a semicircle protractor = r + πr [∵ half of the circumference of a circle =\((1/2) × 2πr = πr]14.8 = r + πr14.8 = r(1 + π) r = 14.8 / (1 + π)r ≈ 4.693\) cm.
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Describe a real-life situation where the median and the interquartile range are likely the best measures of center
and variation to describe the data. Explain your reasoning.
Answers
One real-life situation where the median and the interquartile range are likely the best measures of center and variation to describe the data is in income distribution analysis.
Income distribution is often highly skewed, with a few high-income earners at one end and a larger number of lower-income earners at the other end. In such cases, the mean can be heavily influenced by extreme values, such as a small number of very high incomes, leading to a distorted representation of the typical income level.
The median, on the other hand, is not affected by extreme values and represents the middle value of the income distribution. It provides a more accurate measure of the central tendency of the data, representing the income level that separates the higher half from the lower half of the population.
The interquartile range (IQR) is a measure of dispersion that captures the spread of the middle 50% of the data. It is calculated as the difference between the third quartile (Q3) and the first quartile (Q1).
The IQR is less sensitive to extreme values and outliers than the range or standard deviation, making it a robust measure of variability. In income distribution analysis, the IQR can provide insights into the income gap between the middle-income earners, which may be more representative of the majority of the population.
By using the median and the interquartile range in income distribution analysis, we can obtain a more accurate understanding of the central tendency and variation in income levels, without being overly influenced by extreme values that can skew the mean and other measures of dispersion.
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Write the equation of the line that passes through the points (-9, -3) and (-7,7).
Put your answer in fully reduced point-slope form, unless it is a vertical or horizontal
line.
Answers
Answer:
y - 7 = 5(x + 7).
Step-by-step explanation:
The slope m (7--3)/ (-7- -9)
= 10 / 2 = 5.
y - y1 = m(x - x1)
Using the point (-7, 7):
y - 7 = 5(x + 7).
The weight of an organ in adult males has a billship distribution with a mean of 330 g and a standard deviation of 50 g
Answers
Using the Empirical Rule, it is found that 99.7% of the weights are between 180 g and 480 g.
What does the Empirical Rule state?It states that, for a normally distributed random variable:
Approximately 68% of the measures are within 1 standard deviation of the mean.Approximately 95% of the measures are within 2 standard deviations of the mean.Approximately 99.7% of the measures are within 3 standard deviations of the mean.Hence, the bounds of the interval containing 99.7% of the weights is given by:
330 - 3 x 50 = 180 g.330 + 3 x 50 = 480 g.More can be learned about the Empirical Rule at https://brainly.com/question/24537145
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Find the solution to 12x-2=13(x-15)
Answers
Answer:
x = 193
Step-by-step explanation:
distribute 13 into (x - 15)
=> 12x - 2 = 13x - 195
subtract 12x on both side
=> -2 = x - 195
add 195 on both side
=> x = 193
what is the decimal number to
Decrease by 15%
Answers
Answer:
0.15
Step-by-step explanation:
15% = 15/100 = 0.15
A triangle has angle measurements of 129°, 45°, and 6°. What kind of triangle is it?
Answers
Answer:
IT'S AN OBTUSE ANGLE TRIANGLE.
y=9/4×2
sketch the graph of f and f on the same set of axes
Answers
The graph of the function \(f(x) = (9/4)x^2\) is a symmetric upward-opening parabola.
The graph represents a parabola that opens upward. As x increases, the corresponding y-values increase, forming a curved shape. The vertex of the parabola is at the origin (0,0). The graph is symmetric with respect to the y-axis, meaning that the left and right sides of the parabola are mirror images of each other.The slope of the graph gradually increases as x moves away from the origin. The steepness of the curve becomes more pronounced, indicating a faster rate of increase in y-values for larger x-values.The graph does not intersect the x-axis, indicating that there are no real roots or solutions for the equation f(x) = 0. The y-intercept of the graph is at (0, 0), and the y-values increase indefinitely as x approaches positive or negative infinity.Overall, the graph represents a quadratic function with a positive leading coefficient, resulting in an upward-opening parabolic curve. The graph has been attached.
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this is triangle and it's properties
PLEASE HELP ME
Pls
Answers
HYPOTENUSE RULE :
\(c = \sqrt{ {a}^{2} + {b}^{2} } \\ = \sqrt{ {6}^{2} + {8}^{2} } \\ = 10\)So, third side is 10cm.
- BRAINLIEST answerer
Answer:
10
Step-by-step explanation:
\( {8}^{2} + {6}^{2} = {100}^{2 } \)
\( \sqrt{100} = 10\)
The graph below shows the solutions to which inequality?
A. x^2-3x+3 ≥0
B. x² + 3x-3 <0
C. x²-3x+3<0
D. x² + 3x-3>0
Answers
The inequality expression that corresponds to the solution of the inequality graph is x² + 3x - 3 < 0.
option B.
What is the solution of the inequality?The inequality expression that corresponds to the solution of the inequality graph is determined by simplifying the equations as follows;
The solution of the graph,
x > -4 and x < 1
The first equation with "≥" is ruled out because the graph doesn't have a thick dot.
Let's simplify the second expression;
x² + 3x - 3 < 0
solve using quadratic formula;
x > -3.79 or x < 0.79
The third expression is ruled out since its solution will be complex.
For the last expression;
x² + 3x - 3 > 0
x < -3.79 or x > 0.79
Thus, the correct inequality expression is x² + 3x - 3 < 0.
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The cost of making a shirt is half of what the shirt normally sells for. Today, however, the shirt is 15% discount feom it’s normal price. What is the current price of the shirt.