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MATH SOLVE
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A rock is thrown at a window that is located 18.0 m above the ground. The rock is thrown at an angle of 40.0° above horizontal. The rock is thrown from a height of 2.00 m above the ground with a speed of 30.0 m/s and experiences no appreciable air resistance. If the rock strikes the window on its upward trajectory, from what horizontal distance from the window was it released?
General
2 months ago
What is "A number decreased by 4 is less than 14" written as an inequality?
General
2 months ago
an image of a book shown on a website is 1.5 inches wide and 3 inches tall on a computer monitor. The actual book is 9 inches wide. What scale is being used?
General
2 months ago
What is the measure of an angle formed by the angle bisector of a given angle and one of its sides: 171°30'
General
2 months ago
Between 10 pm and 7:45 am the water level in a swimming pool decreased by 13/16 inch. Assuming the constant rate how much did it drop each hour
General
2 months ago
A health clinic uses a solution of bleach to sterilize petri dishes in which cultures are grown. The sterilization tank contains 120 gal of a solution of 4% ordinary household bleach mixed with pure distilled water. New research indicates that the concentration of bleach should be 6% for complete sterilization. How much of the solution should be drained and replaced with bleach to increase the bleach content to the recommended level?
General
2 months ago
Consider a tank used in certain hydrodynamic experiments. After one experiment the tank contains 800 L of a dye solution with a concentration of 1 g/L. To prepare for the next experiment, the tank is to be rinsed with fresh water flowing in at a rate of 8 L/min, the well-stirred solution flowing out at the same rate. Find the time that will elapse before the concentration of dye in the tank reaches 1% of its original value. (Round your answer to one decimal place.)
General
2 months ago
Sock hop (ExH). You have 10 pairs of socks, fi ve black and fi ve blue, but they are not paired up. Instead, they are all mixed up in a drawer. It ’ s early in the morning, and you don ’ t want to turn on the lights in your dark room. How many socks must you pull out to guarantee that you have a pair of one color? How many must you pull out to have two good pairs (each pair is the same color)? How many must you pull out to be certain you have a pair of black socks?
General
2 months ago
An insurance company insures red and green cars. An actuary compiles the following data: Color of car Red Green Number insured 300 700 Probability an accident occurs 0.10 0.05 Probability that the claim exceeds the deductible, given an accident occurs from this group 0.90 0.80 The actuary randomly picks a claim from all claims that exceed the deductible. Calculate the probability that the claim is on a red car.
General
2 months ago
You have a standard deck of 52 playing cards (13 of each suit). You draw a hand of the top 17 of them. Spades are one of the four suits. What is the expected value of the number of spades you draw?
General
2 months ago
Monique deposited her money in the bank to collect interest. In the first month, she had $225 in her account. After the sixth month, she had $273.75 in her account. Use sequence notation to represent the geometric function. an = 273.75 ⋅ (1.04)n−1 an = 273.75 ⋅ (1.22)n−1 an = 225 ⋅ (0.22)n−1 an = 225 ⋅ (1.04)n−1plz hurry
General
2 months ago
Ms. Nguyen needs to separate $385 into three parts to pay some debts. The second part must be five times as large as the first part. The third part must be $35 more than the first part. How much money must be in each part? Write and solve an equation.
General
2 months ago
Moses has a bakery, and he is expecting a new shipment of flour today.The number of loaves, N, that Moses will bake today given that he receives k kilograms of flour is given by thefunction N(k) = 10 + 3k.The income, I, in dollars, that Moses makes from baking x loaves of bread is given by I(x) = 6x.Find an explicit expression that models Moses's income for the day if he receives k kilograms of flour.
General
2 months ago
Multiple regression can help eliminate internal validity problems by ___________ potential third variables. It also sets a _____________ variable that acts as the independent variable, or the variable that will influence another variable; and a ___________ variable that acts as a dependent variable, or the variable that is hypothesized to be affected by another variable. Effect sizes in multiple-regression analyses are represented by ___________, which is a standardized effect size, and ____________, which is an unstandardized effect size.
General
2 months ago
A rectangular box is to have a square base and a volume of 40 ft3. If the material for the base costs $0.36/ft2, the material for the sides costs $0.05/ft2, and the material for the top costs $0.14/ft2, determine the dimensions of the box that can be constructed at minimum cost.length ftwidth ftheight ft
General
2 months ago
-4x -2y= -124x + 8y = 24Solve by elimination
General
2 months ago
Will give brainiest algebra 2
General
2 months ago
For $146.50, a cosmetician buys 5 L of moisturizer and repackages it in 125-milliliter jars. Each jar costs the cosmetician $0.40. Each jar of moisturizer is sold for $7.95. Find the profit on the 5 L of moisturizer.
General
2 months ago
People are arriving at a party one at a time. While waiting for more people to arrive they entertain themselves by comparing their birthdays. Let X be the number of people needed to obtain a birthday match, i.e., before person X arrives there are no two people with the same birthday, but when person X arrives there is a match. Find the PMF of X.
General
2 months ago
Phil is riding his bike. He rides 54 miles in 4 hours, 67.5 miles in 5 hours, and 81 miles in 6 hours. Find the constant of proportionality and write an equation to describe the situation. Let x represent the number of hours.The constant of proportionality is k =The equation that describes the relationship is y =
General
2 months ago
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