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MATH SOLVE
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i dont understand it so pls explain it to me as well as tell me the answer
General
4 months ago
Solve 3x^2 +11x+6=0Answers -2/3,-32/3,30
General
4 months ago
How many solutions does 4(x-1)=4x+5
General
4 months ago
Julie is a wedding coordinator. She is selecting the menu options for the reception.First, she will give the guests a choice of salad, soup, or bread for the first course. Then, she will allow them to pick from a chicken, steak, fish, or a vegetarian for their main course. Finally, she will allow the guests to choose bride’s vanilla cake, the groom’s chocolate cake, or a cookie. How many outcomes are possible?A. 3B. 4C. 10D. 36
General
4 months ago
A waterfall has a height of 1100 feet. A pebble is thrown upward from the top of the falls with an initial velocity of 20 feet per second. The height of the pebble h in feet after t seconds is given by the equation h = -16 t^2 + 20*t + 1100. How long after the pebble is thrown will it hit the ground?
General
4 months ago
Serena says that if a regression line is drawn correctly in a scatterplot, there will always be the same number of points abovethe line as there are below the line. Which of these must be a counterexample to her claim? 1) a scatterplot with an odd number of points in which the correct regression line passes directly through 0 of the points2) a scatterplot with an even number of points in which the correct regression line passes directly through 0 of the points3) a scatterplot with an odd number of points in which the correct regression line passes directly through 1 of the points4) a scatterplot with an even number of points in which the correct regression line passes directly through 2 of the points
General
4 months ago
A parade route is 1 mile long. People have lined up 5 feet deep on BOTH sides of the street. Using the ratio of 2.5 square feet per person, estimate the number of people in the crowd.A. 26 peopleB. 132,000 peopleC. 10,560 peopleD. 21,160 people
General
4 months ago
State how many significant figures are proper in the results of the following calculations: (a) (106.7)(98.2)/(46.210)(1.01) (b) (18.7)2 (c) (1.60×10−19)(3712).
General
4 months ago
A baby mango tree stands 2.6, meters above the ground. Its roots extend 7/5 meters below the ground.Which of the following expressions represent the vertical distance between the top of the mango tree and the tips of its roots?A.) ∣2.6 − 7/5∣B.) ∣7/5 - 2.6∣C.) None of the Above
General
4 months ago
At a New Car Dealership, a particular model comes in 3 different trim levels (CX, DX,and EX). The same model comes in 4 different colors (Night Black, Pearl White,Sandy Red, and Forest Green). The model of car also has 4 differentinterior options (Grey Cloth, Tan Cloth, Black Leather, Tan Leather). How many different versions of this model can be created from these options?A. 11B. 48C. 23D. 60
General
4 months ago
The quantity of Sensitech laser gaming mice demanded each month is related to the unit price by the equation p = 480.03x2 + 1 (0 ≤ x ≤ 20) where p is measured in thousands of dollars and x in units of a thousand.(a) Find the revenue function R.(b) Find the marginal revenue function R'.(c) Compute R'(2).
General
4 months ago
Let f:X → Y, where X and Y are the set of all real numbers, and x and h are real numbers.a. Find a function f such that the equation f(x + h) = f(x) + f(h) is not true for all values of x and h.b. Find a function f such that equation f(x + h) = f(x) + f(h) is true for all values of x and h.c. Let f(x) = 2x. Find a value for x and a value for h that makes f(x + h) = f(x) + f(h) a true numbersentence.Justify your reasoning.
General
4 months ago
A brine solution of salt flows at a constant rate of 8L/min into a large tank that initially held 100L of brine solution in which was dissolved 0.5kg of salt. The solution inside the tank is kept well stirred and flows out of the tank at the same rate. If the concentration of salt in the brine entering the tank is 0.05kg/L, determine the mass of salt in the tank after t minutes. When will the concentration of salt in the tank reach 0.02kg/L?
General
4 months ago
In order to help identify baby growth patterns that are unusual, we need to construct a confidence interval of the mean head circumference of all babies that are two months old. A random sample of 100 babies is obtained, and the mean head circumference is found to be 40.6 cm. Assuming that the population standard deviation is known to be 1.6 cm, find a 99% confidence interval estimate of the mean head circumference of all 2-month-old babies.
General
4 months ago
Provide a suitable domain and range to complete the definition of each function.a. Let f(x) = 2x + 3.b. Let f(x) = 2x.c. Let C(x) = 9x + 130, where C(x) is the number of calories in a sandwich containing x grams of fat.d. Let B(x) = 100(2)x, where B(x) is the number of bacteria at time x hours over the course of one day.
General
4 months ago
How many liters of a 35% acid solution and a 85% acid solution must be used to produce 80 liters of a 40% acid solution? I already know the answer but I don't understand the steps to find it such as getting the equations.
General
4 months ago
Last winter Armand had 5/6 of a row of stacked logs. At the end of the winter he had 8/15 of the same row left how much wood did he burn over the winter
General
4 months ago
Tasha ordered soup and salad for lunch. If Tasha ordered 10 ounces of soup for lunch and the total cost was 3.30 dollars, how many ounces of salad did Tasha order?
General
4 months ago
Suppose that 0.7% of male professional golfers use steroids, and that Max is a male professional golfer who has been randomly selected to take a drug test. The test he has been asked to take has a false positive rate of 1% and a false negative rate of 10%. Use Bayes’ rule to calculate the probability that Max actually uses steroids if he tests positive for steroid use. Give your answer as a decimal precise to three decimal places.
General
4 months ago
The price of a new car is $40,000. Assume that an individual makes a down payment of 25% toward the purchase of the car and secures financing for the balance at the rate of 8%/year compounded monthly. (Round your answers to the nearest cent.) (a) What monthly payment will she be required to make if the car is financed over a period of 60 months? Over a period of 72 months?
General
4 months ago
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