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write an equation of an ellipse in standard form with the center at the origin and with the given characteristics.vertex at (-5,0) and co-vertex at (0,4)A. x^2/25 + y^2/16 = 1 B. x^2/16 + y^2/25 = 1 C. x^2/5 + y^2/4 = 1D. x^2/4 + y^2/5 = 1
General
5 months ago
In the triangle, bc=12 cm and tan c =0.583. what is the length of the hypotenuse, to the nearest tenth of a centimeter
General
5 months ago
how do you find the surface area for this shape?
General
5 months ago
Does anyone know what graph to choose?
General
5 months ago
Ifede can use a limited number of spells to defeat trolls and goblins. It takes the same number of spells to defeat each troll, and it takes 3 spells to defeat each goblin. Let T represents the number of trolls and G represents the number of goblins that Ifede can defeat without running out of spells. 5T+3G≤855 According to the inequality, how many spells does it take to defeat each troll, and what is the maximum number of spells that Ifede can use?
General
5 months ago
Customers of a phone company can choose between two service plans for long distance calls. The first plan has a 26 monthly fee and charges an additional 0.08 for each minute of calls. The second plan has an 8 monthly fee and charges an additional 0.13 for each minute of calls. For how many minutes of calls will the costs of the two plans be equal?
General
5 months ago
Carlin wants to determine the general attitude toward math of the students in the school. Which of the following methods will produce a random sample? A) survey 10 students from each of Mr. Lee’s math class. B) Survey all of the students in Carlin’s 1st period class. C) survey every 15th student who enters the cafeteria at lunchtime. D) survey every 3rd student in the list of honors students.
General
5 months ago
98 points! Easy! Show work!
General
5 months ago
Which of these triangle pairs can be mapped to each other using two reflections?
General
5 months ago
Four years ago Peter was three times as old as Sylvia, and in 5 years the sum of their ages will be 38 years. find their present ages
General
5 months ago
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