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Wo snails are 338 centimeters apart. they crawl toward each other at rates that differ by 3 cm/min. after 26 minutes, they meet. how fast is each snail crawling?
General
10 months ago
You are presented with three urns. each urn has 10 marbles. in addition, each urn holds only black or red marbles. urn 1 has 3 red marbles. urn 2 has 8 red marbles. urn 3 has 5 red marbles. you randomly pick 1 marble from 1 of the three urns. calculate the probability that it is a black marble.
General
10 months ago
What is the equation in standard form for your ellipse? what are the coordinates for the center? what are the coordinates of the two focus points? what is the major axis length of your ellipse, and how do you know this? what letter in the pythagorean relation represents this distance? what is the minor axis length of your ellipse, and how do you know this? what letter in the pythagorean relation represents this distance? how might the ellipse you drew be different from the ellipses of others in the class? how might your ellipse be similar to the ellipses of others in the class?
General
10 months ago
I need help on the Wednesday column, question 1, letter b.
General
10 months ago
prove the identity (cosx+cosy)^2+(sinx-siny)^2= 2+2cos(x+y)If at all possible, please provide a two-columned answer, explaining each step. Thank you :D
General
10 months ago
A single die is rolled twice. The 36 equally-likely outcomes are shown to the right. Find the probability of getting first an odd number and second an even number.
General
10 months ago
Point) a norman window has the shape of a rectangle with a semi circle on top; diameter of the semicircle exactly matches the width of the rectangle. find the dimensions w×hw×h of the norman window whose perimeter is 1000in.1000in. that has maximal area.
General
10 months ago
Jen, carrie, and fran are each thinking of a number. when you add their numbers together you get 207. jen's number is 9 more than carrie's, and fran's number is 3 less than jen's number. what is fran's number?
General
10 months ago
The expression below represents the number of boxes of cookies sold by a girl scouts troop with 14 members at the school fair, where x is the number of days after the first day of the fair.14(22x)+350Interpret the meaning of each term in the expression.The first term indicates that the 14 girl scouts each sold 25 boxes of cookies per additional day of the fair. The second term indicates that the 14 girl scouts each sold 22 boxes of cookies on the first day of the fair.The first term indicates that the 14 girl scouts each sold 22 boxes of cookies per additional day of the fair. The second term indicates that the 14 girl scouts each sold 25 boxes of cookies on the first day of the fair.The first term indicates that the 14 girl scouts each sold 22 boxes of cookies on the first day of the fair. The second term indicates that the 14 girl scouts each sold 25 boxes of cookies per additional day of the fair.The first term indicates that the 14 girl scouts each sold 25 boxes of cookies on the first day of the fair. The second term indicates that the 14 girl scouts each sold 22 boxes of cookies per additional day of the fair.
General
10 months ago
Daniel is enrolling for a test prep class. The expression below represents the hourly charges, including the cost for the materials. $30x + $651. The constant of the expression represents the ___ A. cost of materialsB. Cost per hourC. Number of hours2. and the coefficient of x represents the__ A. Cost per hourB. cost of materialsC. number of hours
General
10 months ago
The automatic opening device of a military cargo parachute has been designed to open when the parachute is 195 m above the ground. suppose opening altitude actually has a normal distribution with mean value 195 and standard deviation 33 m. equipment damage will occur if the parachute opens at an altitude of less than 100 m. what is the probability that there is equipment damage to the payload of at least one of five independently dropped parachutes? (round your answer to four decimal places.)
General
10 months ago
The measure of an angle is twenty-nine times the measure of a complementary angle. what is the measure of each angle?
General
10 months ago
The length of a rectangle is 16 centimeters, and the diagonal of the rectangle is 20 centimeters long. what is the perimeter of the rectangle
General
10 months ago
Refer to the accompanying technology display. the probabilities were obtained by entering the values of n equals 5 and p equals 0.774. in a clinical test of a drug, 77.4% of the subjects treated with 10 mg of the drug experienced headaches. in each case, assume that 5 subjects are randomly selected and treated with 10 mg of the drug. find the probability that at least four of the subjects experience headaches. is it unusual to have fewer than four subjects experience headaches?
General
10 months ago
An internet service provider is implementing a new program based on the number of connected devices in each household. Currently, customers are charged a flat rate of $175 per month. The new plan would charge a flat rate of $94 plus an additional $4.50 per device connected to the network. Find and graph the number of devices, x, for which the cost of the new plan is less than the current plan.
General
10 months ago
Consider the equation below.-3(4x-7) = 15 -2xThe equation was solved using the following steps.Step 1: -12x + 21 = 15 - 2xstep 2: -10x + 21 = 15step 3: -10x = -6step 4: x = -6/-10step 5: x = 3/5Complete the statements below with the process used to achieve steps 1-4.Step 1: _______ -3 to 4x and -7step 2:_______ 2xstep 3:_______ 21step 4: _______ -10options: divide, subtract, distribute, add, multiply by,
General
10 months ago
Let u = PQ be the directed line segment from P(0,0) to Q(9,12), and let c be a scalar such that c < 0. Which statement best describes cu?A) the terminal point of vector cu lies in quadrant IIB) the terminal point of vector cu lies in quadrant IIIC) the terminal point of vector cu lies in quadrant ID) the terminal point of vector cu lies in quadrant IV
General
10 months ago
The vertex angle of an isosceles triangle is 20° less than the sum of the base angles. Which system of equations can be used to find the measure of the vertex and base angles?
General
10 months ago
two fair 6 sided dice p(sum<12)p(dice show same value)
General
10 months ago
Given two triangles with three corresponding angles that are congruent, why can't the two triangles be proved congruent? A) Given three congruent angles, only the longest side can be congruent. B) Given three congruent angles, only the shortest side can be congruent. Eliminate C) The triangles could have the same shape but not necessarily the same size. D) The triangles could have the same size but not necessarily the same shape.
General
10 months ago
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