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MATH SOLVE
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A hot air balloon is tethered to a 100-meter rope with no slack. The balloon is 70 meters above the ground. What is the angle of elevation? (to the nearest tenth) A) 34.9° B) 43.5° C) 44.4° D) 45.6°
General
3 months ago
Write a linear expression in simplest form to represent total field goal points scored in the first two quarters.1st quarter= 2x-62nd quarter = x+2
General
3 months ago
The area of a rectangle is 375 in? The ratio of the length to the width is 5:3. Find the length and the width The length of the rectangle isin
General
3 months ago
Which set of equations could be parametric equations?y= x and y= 3xy= x + 1 and y= 3x2x= t and y=3tx= 3y and y= x+1
General
3 months ago
4 MATH QUESTIONS AND YOU WILL GET 20 POINTS PLEASE PLEASE HELP I NEED THIS
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3 months ago
The 20 colleges of interest to a high school senior include 8 that are expensive ( tuition more than 20,000 per year), 8 that are far from home( more than 200 miles away), and 7 that are both expensive and far from home. If the student decides to select a college that is not expensive and within 200 miles from home, how many selections are possible?
General
3 months ago
Line 1 passes through the points -2,7 and 3,3. Line 2 passes through the points 5,1 and 9,1. Find the slope of each line. Which line has the greater slope?
General
3 months ago
HELP I NEED YOUR HELP MATH ONE PROBLEM 10 POINTS HELP
General
3 months ago
How does the value of 30,000 x (4 x 3) compare to the value of 300 x (4 x 3)?
General
3 months ago
99 POINTS!Find the standard deviation for the binomial distribution.n=21; p=0.2A) 1.83B) 5.95C) -0.58D) 5.10
General
3 months ago
The table and the equation show show the approximate speeds for a roadrunner and a coyote running at top speed. Which animal runs faster? How much faster per minute? ( 1 mile=5,280 feet, 1 minute= 60seconds
General
3 months ago
The Scottsdale fire department aims to respond to fire calls in 4 minutes or less, on average. Response times are normally distributed with a standard deviation of 1 minute. Would a sample of 18 fire calls with a mean response time of 4 minutes 30 seconds provide sufficient evidence to show that the goal is not being met at α = .01?
General
3 months ago
The Toylot company makes an electric train with a motor that it claims will draw an average of only 0.8 ampere (A) under a normal load. A sample of nine motors was tested, and it was found that the mean current was x = 1.32 A, with a sample standard deviation of s = 0.44 A. Do the data indicate that the Toylot claim of 0.8 A is too low? (Use a 1% level of significance.)
General
3 months ago
16 is 10% of what number
General
3 months ago
A welder drops a piece of red-hot steel on the floor. The initial temperature of the steel is 2,500 degrees Fahrenheit. The ambient temperature is 80 degrees Fahrenheit. After 2 minutes the temperature of the steel is 1,500 degrees. The function f(t)=Ce(−kt)+80 represents the situation, where t is time in minutes, C is a constant, and k is a constant.After 2 minutes the temperature of the steel is 1,500 degrees. After how many minutes will the temperature of the steel be 100 degrees and therefore safe to pick up with bare hands?
General
3 months ago
A triangular colourful scenery is made in a wall with sides 50 cm, 50 cm and 80 cm. A golden thread is to hang from the vertex so as to just reach the side 80 cm. How much length of golden thread is required ?
General
3 months ago
The attention span of children (ages 3 to 5) is claimed to be Normally distributed with a mean of 15 minutes and a standard deviation of 4 minutes. A test is to be performed to decide if the average attention span of these kids is really this short or if it is longer. You decide to test the hypotheses H0: μ = 15 versus Ha: μ > 15 at the 5% significance level. A sample of 10 children will watch a TV show they have never seen before, and the time until they walk away from the show will be recorded. At a significance level of 5%, the decision rule would be to reject the null hypothesis if the observed sample mean is greater than __________________ minutes.
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3 months ago
The altitude at which we boil an egg affects how long it takes for the egg to achieve perfect hardness.It takes 198 seconds to boil a perfect egg at the lowest place possible, the edge of the Dead Sea, which has analtitude of -418 meters.The highest place possible is the summit of Mount Everest which has an altitude of 8848 meters. It takes 209seconds to boil a perfect egg there.T(a) models the time (in seconds) it takes to boil a perfect egg at an altitude of a meters.Which number type is more appropriate for the domain of T?
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3 months ago
The area of a square equals the square of a length of the side of the square. The perimeter of a square equals the sum of the lengths of all four sides. The sum of the areas of two squares is 65, while the difference in their areas is 33. Find the sum of their perimeters.
General
3 months ago
While your family is visiting Deep creek lake, you and your mother decide to go boating. The Rangers charge $6.50 per hour in addition to $25.00 deposit to rent a canoe. If you wish to rent the canoe from 12:30 to 3:30 PM, write and solve a linear equation to find the total cost to rent the canoe.
General
3 months ago
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