The total height of the climbing tower is found by dividing 42 feet by 0.60, as 42 feet represents 60% of the total height. The calculation gives us 70 feet, which is the height of the tower.
The student has asked a question related to artificial wall climbing and its connection to mathematics, specifically regarding percentages and solving for an unknown total given a part and its percentage of the whole. The question asks to find out the total height of a climbing tower given that 42 feet is 60% of its total height.
To solve this, we would set up a proportion where 42 feet equals 60% of the total height. Using the formula part = percent × whole, we can represent the total height of the tower by the variable x. Therefore, the equation is:
42 = 0.60x
To find x, we divide both sides of the equation by 0.60:
x = 42 / 0.60
x = 70 feet
Thus, the height of the tower is 70 feet.
A pizza shop offers nine toppings. No topping is used more than once. What is the probability that the toppings on a tree topping pizza are pepperoni, onions, and mushrooms?
Final answer:
The probability of selecting pepperoni, onions, and mushrooms from nine toppings for a pizza is 1/84, using the combination formula to calculate the total number of three-topping combinations.
Explanation:
To find the probability that a pizza has pepperoni, onions, and mushrooms as the toppings, we first have to determine the total number of ways we can select any three toppings from nine. This is given by the combination formula C(n, k) = n! / (k!(n-k)!), where n is the total number of items, and k is the number of items to choose.
In this case, n is 9 and k is 3. Thus, the total number of ways to choose any three toppings from nine is C(9, 3).
Since there is only one way to specifically get pepperoni, onions, and mushrooms together, the probability P is 1 divided by the total number of three-topping combinations, which simplifies to P = 1 / C(9, 3).
Therefore, P = 1 / (9! / (3!(9-3)!)) = 1 / (9! / (3!6!)) = 1 / (84) = 1/84. Thus, the probability is 1/84.
What is 1/6+1/12=what does this equal?
Law of cosines: a2 = b2 + c2 – 2bccos(A)
Which equation correctly uses the law of cosines to solve for y?
92 = y2 + 192 – 2(y)(19)cos(41°)
y2 = 92 + 192 – 2(y)(19)cos(41°)
92 = y2 + 192 – 2(9)(19)cos(41°)
y2 = 92 + 192 – 2(9)(19)cos(41°)
Testing a Lie Detector The table below includes results from polygraph (lie detector) experiments conducted by researchers Charles R. Honts (Boise State University) and Gordon H. Barland (Department of Defense Polygraph Institute). In each case, it was known if the subject lied or did not lie, so the table indicates when the polygraph test was correct. Use a 0.05 significance level to test the claim that whether a subject lies is independent of the polygraph test indication. Do the results suggest that polygraphs are effective in distinguishing between truths and lies?
Did the Subject Actually Lie?
Did the Subject Actually Lie?
No (Did Not Lie)
Yes (Lied)
Polygraph test indicated that the subject lied.
15
42
Polygraph test indicated that the subject did not lie.
To test the claim that whether a subject lies is independent of the polygraph test indication, a chi-square test of independence is conducted. The results, with a chi-square value of 34.774, suggest that polygraphs are effective in distinguishing between truths and lies.
Explanation:To test the claim that whether a subject lies is independent of the polygraph test indication, we will conduct a chi-square test of independence. Using a significance level of 0.05, we will compare the observed frequencies in the table to the expected frequencies assuming independence. If the test statistic is significant, it would suggest that polygraphs are effective in distinguishing between truths and lies.
First, let's calculate the expected frequencies assuming independence. The total number of subjects who lied is 42+15=57, and the total number of subjects who did not lie is 15+129=144. The proportion who lied is 57/(57+144)=0.283. Multiplying this proportion by the number of subjects who were indicated as lying (57), we would expect (0.283)(57)=16.131 subjects to be accurate. Similarly, multiplying the proportion who did not lie by the number of subjects who were indicated as not lying, we would expect (0.717)(144)=103.488 subjects to be accurate.
Now, let's calculate the chi-square test statistic. Using the formula: chi-square = Σ (observed frequency - expected frequency)^2 / expected frequency, we calculate the chi-square value to be 34.774. Comparing this value to the critical chi-square value at a significance level of 0.05, with (2-1)(2-1) = 1 degree of freedom, the critical chi-square value is 3.841. Since the calculated chi-square value is greater than the critical value, we reject the null hypothesis and conclude that the results suggest that polygraphs are effective in distinguishing between truths and lies.
https://brainly.com/question/32665004
#SPJ11
an airline travels 135 miles in 15 minutes whats its speed in miles per hour
Suppose an Egyptian mummy is discovered in which the amount of carbon 14 is present is only about one third the amount found in living human beings. About how long did the egyptian die
Answer: 9035
Step-by-step explanation:
Bao and Calvin use 6 lemons to make ever 4auarts of lemonade. They want to make 12 quarts of lemonade. How many lemons do they need?
describe how to find the number of $4 train tickets you can buy with $32
one day a corn stalk was 0.85m tall. A tomato plant was0.850m. A carrot top was 0.085m.Which plant was the shortest?
solve tan(2θ)+tan(θ)=0 exactly
A real estate agent makes an annual salary of $30,000 plus a 4% commission on sales. If the realtor's salary is $84,000, how much did he make in sales?
He made 1,350,000 in sales.
What is percentage?A percentage is a number that tells us how much out of 100.
Given that, A real estate agent makes an annual salary of $30,000 plus a 4% commission on sales, and a realtor's salary is $84,000,
84000 - 30000=54000
54000 is his sales
100/4 = 25
54000*25 = 1350000
1,350,000
Hence, He made 1,350,000 in sales.
For more references on percentage, click;
https://brainly.com/question/15537614
#SPJ2
Sisters Corp expects to earn $5 per share next year. The firm's ROE is 14% and its plowback ratio is 60%. If the firm's market capitalization rate is 10%. a. Calculate the price with the constant dividend growth model. (Do not round intermediate calculations.) Price $ ____? b. Calculate the price with no growth. Price $ _____? c. What is the present value of its growth opportunities? (Do not round intermediate calculations.) PVGO $ ______?
To calculate the price using the constant dividend growth model, we can use the formula: Price = Dividend / (Market Capitalization Rate - Dividend Growth Rate). Given the expected dividend per share, market capitalization rate, ROE, and plowback ratio, we can calculate the price per share.
Explanation:To calculate the price using the constant dividend growth model, we can use the formula:
Price = Dividend / (Market Capitalization Rate - Dividend Growth Rate)
Given that the expected dividend per share is $5 and the market capitalization rate is 10%, we can calculate the dividend growth rate using the ROE and plowback ratio. The plowback ratio is the portion of earnings retained by the company to finance growth. It is calculated as (1 - Dividend Payout Ratio). The dividend payout ratio is the portion of earnings paid out as dividends, which is the complement of the plowback ratio.
Using the formula for the dividend growth rate:
Dividend Growth Rate = ROE * Plowback Ratio
Given that the ROE is 14% and the plowback ratio is 60%, the dividend growth rate is:
Dividend Growth Rate = 14% * 60% = 8.4%
Now we can calculate the price:
Price = $5 / (10% - 8.4%) = $5 / 1.6% = $312.50 per share
Using the digits 3, 4, 5, 6, 7, 8, and 9, how many 7-digit numbers can be constructed if the number must begin with an odd digit and digits may not be repeated?
The required numbers that can be constructed are given as 1440 words.
Given that,
Using the digits 3, 4, 5, 6, 7, 8, and 9, how many 7-digit numbers can be constructed if the number must begin with an odd digit and digits may not be repeated is to be determined.
In arithmetic, combination and permutation are two different ways of grouping elements of a set into subsets. In combination, the components of the subset can be recorded in any order. In a permutation, the components of the subset are listed in a distinctive order.
Here,
Because, there are four odd digits, there are only four options for the initial digit.
It has six digits from which to choose 4, 6C4 = 15. And there are 4! = 24 different ways to arrange those four digits.
The total number of choices is 4 × 15 × 24 = 1440
Thus, the required numbers that can be constructed are given as 1440 words.
Learn more about permutations and combinations here: https://brainly.com/question/2295036
#SPJ2
A furniture store received an order for 3,456 chairs. they can fit 9 chairs in a large shipping box. how many shipping boxes will they need to ship all of the chairs
To ship 3,456 chairs with each box holding 9 chairs, you will need a total of 385 boxes.
Explanation:To find the number of shipping boxes needed, we need to divide the total number of chairs by the number of chairs that can fit in one box. So, with 3,456 chairs and the capacity of each box being 9 chairs, we use the formula:
Number of boxes = Total chairs / Chairs per box
This gives us:
Number of boxes = 3,456 / 9
This division results in 384 with a remainder of 0. Since you can't ship a fraction of a box, but you need a whole box even for a single chair, this means that you will need 385 boxes to ship all the chairs.
Learn more about Division here:https://brainly.com/question/34253396
#SPJ2
The right triangle ABC shown below is inscribed inside a parabola. Point B is also the maximum point of the parabola (vertex) and point C is the x intercept of the parabola. If the equation of the parabola is given by y = -x2 + 4x + C, find C so that the area of the triangle ABC is equal to 32 square units.
Your friend has a fabulous recipe for salsa, and he wants to start packing it up and selling it. He can rent the back room of a local restaurant any time he wants, complete with their equipment, for $100 per time. It costs him $2 a jar for the materials (ingredients for the salsa, jars, labels, cartons) and labor (you and a couple of friends of his) for each jar he makes. He can sell 12,000 jars of salsa each year (I told you it was a fabulous recipe!), with a constant demand (that is, it's not seasonal; it doesn't vary from week to week or month to month). It costs him $1 a year per jar to store the salsa in the warehouse he ships from. He wants to find the number of jars he should produce in each run in order to minimize his production and storage costs, assuming he'll produce 12,000 jars of salsa each year.
Your friend wants to find the number of jars he should produce in each run in order to minimize his production and storage costs, assuming he'll produce 12,000 jars of salsa each year.
The EOQ formula takes into account the demand, setup cost, and holding cost per unit is 154.91 by calculating the EOQ, that identify the batch size that results in the most cost-efficient production and storage.
Given that:
demand is 12,000 jars, setup cost is $100 per run, and holding cost per unit is $1 per jar per year.To determine the number of jars to produce in each run, uses the Economic Order Quantity (EOQ) formula.
The Economic Order Quantity (EOQ) formula is given by:
EOQ =[tex]\sqrt{[/tex][(2 * Demand * Setup cost) / Holding cost per unit].
By substituting these values into the formula:
EQR = [tex]\sqrt{\frac{2\times1200\times10}{1} }[/tex]
On multiplying gives:
EQR = [tex]\sqrt{{24000}}[/tex]\
Take square root on both sides:
EQR = 154.91
The EOQ formula takes into account the demand, setup cost, and holding cost per unit is 154.91 by calculating the EOQ, that can identify the batch size that results in the most cost-efficient production and storage.
Learn more about EOQ here:
https://brainly.com/question/34141837
#SPJ3
The number of automobiles sold weekly at a certain dealership is a random variable with expected value 16 .Give an upper bound to the probability that
(a) next week's sales exceed 18;
(b )next week's sales exceed 25.
(c) Suppose that the variance of the number of automobiles sold weekly is 9. Give a lower bound to the probability that next week's sales are between 10 and 22 inclusively;
(d) give an upper bound to the probability that next week's sales exceed 18.
Using the properties of normally distributed random variables and Chebyshev's inequality, we can find the upper and lower bounds for the probability of next week's automobile sales, given the expected value and variance. These calculations involve finding the 'k' value, which is derived from subtracting the expected value from the target sales value, and then using this in the inequality.
Explanation:The subject of this question is Probability in Mathematics, and this question is likely for a College level course. To bound the probability of a normally distributed random variable exceeding a given value, we can use Chebyshev's inequality: Pr(|X - μ| ≥ kσ) ≤ 1 / k2. Here, X represents the random variable (automobile sales), μ is its expected value (16 sales), and σ is its standard deviation (the square root of the variance).
To find an upper bound for the probability that next week's sales exceed 18, we calculate k as |18 - 16| and use the inequality to calculate the upper bound. The same method applies for finding an upper bound that next week's sales exceed 25. For the probability that next week's sales are between 10 and 22, we have two k-values (|10-16| and |22-16|), and we use both in the inequality to find the lower bound. The fourth part of the question appears to be a repeat of part (a).Learn more about Probability here:
https://brainly.com/question/32117953
#SPJ11
A repeated-measures study using a sample of n = 20 participants would produce a t statistic with df of what?
The t-statistic for a repeated-measures study with a sample of n = 20 participants would have df=19.
What is an expression?Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.
Now, For determine the degrees of freedom (df) for a repeated-measures study with a sample size of n = 20, we can use the formula:
⇒ df = n - 1
However, in a repeated-measures study, we are comparing two sets of measurements from the same participants.
This means that the difference scores between the two sets of measurements will be used to compute the t-statistic.
Now, For a paired t-test with a sample size of n=20, we would have;
⇒ n - 1 = 19
⇒ n = 20 degrees of freedom.
Therefore, the t-statistic for a repeated-measures study with a sample of n = 20 participants would have df=19.
Learn more about the mathematical expression visit:
brainly.com/question/1859113
#SPJ2
rahms spent two and a half hours writing an essay it took him 4 times as long to finish his science project how long did it take rahm to write the essay and finish the science project
The radius of a sphere is increasing at a rate of 2 mm/s. How fast is the volume increasing when the diameter is 80 mm? Evaluate your answer numerically.
The diameter is 80 mm, the volume of the sphere is increasing at a rate of approximately 40211.2 mm³/s.
To find how fast the volume of the sphere is increasing, we can use the formula for the volume of a sphere:
[tex]\[ V = \frac{4}{3}\pi r^3 \][/tex]
Where V is the volume of the sphere and r is the radius.
Differentiating both sides of the equation with respect to time t, we get:
[tex]\[ \frac{dV}{dt} = 4\pi r^2 \frac{dr}{dt} \][/tex]
Given:
- [tex]\( \frac{dr}{dt} = 2 \)[/tex] mm/s (rate at which the radius is increasing)
- [tex]\( r = \frac{d}{2} = \frac{80}{2} = 40 \)[/tex] mm (radius when the diameter is 80 mm)
Substitute these values into the formula:
[tex]\[ \frac{dV}{dt} = 4\pi (40)^2 (2) \][/tex]
[tex]\[ \frac{dV}{dt} = 4\pi (1600) (2) \][/tex]
[tex]\[ \frac{dV}{dt} = 12800\pi \][/tex]
Now, let's evaluate this numerically:
[tex]\[ \frac{dV}{dt} ≈ 12800 \times 3.14 \][/tex]
[tex]\[ \frac{dV}{dt} ≈ 40211.2 \text{ mm}^3/\text{s} \][/tex]
Therefore, when the diameter is 80 mm, the volume of the sphere is increasing at a rate of approximately 40211.2 mm³/s.
how to simplify fractions
Hello There!
To simplify fractions, divide both the numerator "top number" and the denominator "bottom number" until you can't go any lower.
EXAMPLE
[tex]\frac{4}{8}[/tex] = [tex]\frac{1}{2}[/tex]
You divide the numerator and the denominator both by 4 which gives you the fraction [tex]\frac{1}{2}[/tex]
if you have 18 1/4 pounds of crabs and you need to serve 30 people at a dinner. How much crab will each person receive?
find the sum 1 + 4 + 16 + · · · + 65,536
Final answer:
The sum of the series of powers of 2 from 1 to 65,536 is a geometric series, which can be calculated using the geometric series sum formula to find that the sum is 131,071.
Explanation:
The student is asking about the sum of a series of powers of 2, starting from 2⁰ (which is 1) up to 2¹⁶ (which is 65,536). This is a geometric series where each term is a power of 2, and the common ratio is 2. The sum of a geometric series can be found using the formula:
S = a₁(1 - rⁿ) / (1 - r), where S is the sum of the series, a1 is the first term, r is the common ratio, and n is the number of terms.
In this case, a₁ = 1 (first term), r = 2 (common ratio), and n = 17 (since the series starts at 2⁰ and ends at 2¹⁶, giving us 17 terms).
Plugging these values into the formula gives us:
S = 1(1 - 2¹⁷) / (1 - 2)
S = 1(1 - 131,072) / (-1)
S = 131,071
Therefore, the sum of the series is 131,071.
a small pump can drain a pool in 9 hours. a large pump could drain the same pool in 7 hours. how long will it take to drain the pool of both pumps are used simultaneously
The combined rate of the small and large pumps is 16/63 pools per hour, and it will take them approximately 3.94 hours to drain the pool when working together.
Explanation:To figure out how long it would take for both pumps to drain the pool simultaneously, we will use the concept of rates. Since the small pump can drain the pool in 9 hours, it has a rate of 1/9 pools per hour. Similarly, the large pump can drain the pool in 7 hours, so it has a rate of 1/7 pools per hour.
When we use both pumps together, we add their rates. So, the combined rate of the small and large pumps is (1/9 + 1/7) = 16/63 pools per hour.
To find the time it will take them to drain the pool together, we divide the size of the pool (1 pool) by their combined rate (16/63 pools per hour). Therefore, it will take the two pumps approximately 3.94 hours to drain the pool when working together.
Learn more about pool draining time here:https://brainly.com/question/14633979
#SPJ2
Find two consecutive positive integers such that the sum of their squares is 421 .
If a circular property has a diameter of 50' and costs $120 per square foot, what is the cost of the property?
To calculate the cost of a circular property with a diameter of 50', determine the area using the formula π * r^2, and then multiply by the cost per square foot. The total cost of the property comes to $235,619.40.
Explanation:The question asks us to calculate the cost of a property with a circular shape having a diameter of 50'. To begin with, we will find the area of the circular property by using the formula for the area of a circle, A = π * r2, where π (pi) is approximately 3.14159, and r is the radius of the circle. Since the diameter is given as 50', the radius (r) would be half of that, which is 25'. Therefore, the area (A) of the property is 3.14159 * (25')2 = 3.14159 * 625 = 1963.495 square feet.
Now, if the cost is $120 per square foot, we multiply the area by this cost to find the total price of the property. So, the total cost is 1963.495 square feet * $120/square foot = $235,619.40.
Therefore, the cost of the property is $235,619.40.
The graph of a sinusoidal function intersects its midline at (0,5) and then has a maximum point at (\pi,6)
Write the formula of the function, where x is entered in radians.
f(x)=
Answer:
f(x)=1sin(1/2x)+5
Step-by-step explanation:
A beluga whale is 5 yards and 3 inches long, and a gray whale is 15 yards and 5 inches long. What is the difference in length between the two whales?
Answer:
Difference in length between two whales is 362 inches or 10 yards and 2 inches.
Step-by-step explanation:
Lets convert the values to inches:
1 yard = 36 inches
Length of a beluga whale in inches:
5 yards = [tex]5*36[/tex] inches = [tex]180[/tex] inches
Therefore total length of a beluga whale = 180 inches + 3 inches
=183 inches
Length of a gray whale in inches:
15 yards = [tex]15*36[/tex] inches = [tex]540[/tex] inches
Therefore total length of a beluga whale = 540 inches + 5 inches
=545 inches
Difference in length between two whales = 545 inches - 183 inches
= 362 inches
To represent this in yards and inches we can divide the value by 36.
[tex]\frac{362}{36} =10.06[/tex] yards
=10 yards and 2 inches
Difference in length between two whales is 10 yards and 2 inches.
Together, Louisa and Jill scored more than 30 points in the basketball game. If Jill scored 12 points, how many points P did Louisa score? A. P > 18
Answer:
Option A) P > 18 is the correct option.
Step-by-step explanation:
Louisa and Jill scored jointly in basketball = Score of Louisa + score of Jill
Joint score is greater than 30 points
So Score of Louisa P + score of Jill > 30
If Jill scored 12 points then inequality becomes as
score of Louisa P + 12 > 30
Now by subtracting 12 from both side
score of Louisa P + 12 - 12 > 30 - 12
score of Louisa P > 18
Beatrice invests $1,440 in an account that pays 3 percent simple interest. How much more could she have earned over a 4-year period if the interest had compounded annually?
$7.93
$31.73
$17.61
$28.37
$21.28
To calculate the compound interest, use the formula A = P(1 + r/n)^(n*t), where A is the future amount, P is the principal, r is the interest rate, n is the number of times interest is compounded per year, and t is the number of years. Beatrice could have earned $419.38 more over a 4-year period with compounded interest.
Explanation:To calculate the compound interest, we can use the formula: A = P(1 + r/n)^(n*t), where A is the future amount, P is the principal, r is the interest rate, n is the number of times interest is compounded per year, and t is the number of years. In this case, Beatrice invests $1,440 at an interest rate of 3% for 4 years.
Using the formula, the future amount with compound interest would be: A = 1440 * (1 + 0.03/1)^(1*4) = $1576.18.
To find the difference in earnings, we subtract the future amount with simple interest from the future amount with compound interest: $1576.18 - $1156.80 = $419.38. Therefore, Beatrice could have earned $419.38 more over a 4-year period with compounded interest.