Mathematics, 14.07.2019 14:00 mooredollie
Consider the diagram and the paragraph proof below. given: right △abc as shown where cd is an altitude of the triangle prove: a2 + b2 = c2 because △abc and △cbd both have a right angle, and the same angle b is in both triangles, the triangles must be similar by aa. likewise, △abc and △acd both have a right angle, and the same angle a is in both triangles, so they also must be similar by aa. the proportions and are true because they are ratios of corresponding parts of similar triangles. the two proportions can be rewritten as a2 = cf and b2 = ce. adding b2 to both sides of first equation, a2 = cf, results in the equation a2 + b2 = cf + b2. because b2 and ce are equal, ce can be substituted into the right side of the equation for b2, resulting in the equation a2 + b2 = cf + ce. applying the converse of the distributive property results in the equation a2 + b2 = c(f + e). which is the last sentence of the proof? because f + e = 1, a2 + b2 = c2. because f + e = c, a2 + b2 = c2. because a2 + b2 = c2, f + e = c. because a2 + b2 = c2, f + e = 1.
Answers: 1
Mathematics, 21.06.2019 21:10
Aplane intersects a pris paralel to the base of the prism. the cross section is a polygon wth eight sides. how many sides does the base of the prism have? a. 10 b. 8 c. 7 d. 9
Answers: 1
Mathematics, 21.06.2019 22:30
Solve: 25 points find the fifth term of an increasing geometric progression if the first term is equal to 7−3 √5 and each term (starting with the second) is equal to the difference of the term following it and the term preceding it.
Answers: 1
Mathematics, 21.06.2019 22:30
Aaron invested a total of $4,100, some in an account earning 8% simple interest, and the rest in an account earning 5% simple interest. how much did he invest in each account if after one year he earned $211 in interest? select one: a. $200 at 8%, $3,900 at 5% b. $3,200 at 8%, $900 at 5% c. $900 at 8%, $3,200 at 5% d. $3,900 at 8%, $200 at 5%
Answers: 1
Consider the diagram and the paragraph proof below. given: right △abc as shown where cd is an altit...
Mathematics, 02.03.2021 07:20
Biology, 02.03.2021 07:20
Geography, 02.03.2021 07:20
Mathematics, 02.03.2021 07:20
English, 02.03.2021 07:20
Mathematics, 02.03.2021 07:20
English, 02.03.2021 07:20
Mathematics, 02.03.2021 07:20
Mathematics, 02.03.2021 07:20
Mathematics, 02.03.2021 07:20