Which of the equations are true identities?
A. (3x – 2y)(2y – 3x) = 9x2 – 4y2
B. (2k +5r)(2k...
Mathematics, 16.04.2021 19:30 annalaurie7
Which of the equations are true identities?
A. (3x – 2y)(2y – 3x) = 9x2 – 4y2
B. (2k +5r)(2k – 5r) = 4k2 – 25r2
Choose 1
only A
only B
both A and B
Neither A nor B
Answers: 1
Mathematics, 21.06.2019 21:30
In δabc shown below, ∠bac is congruent to ∠bca: triangle abc, where angles a and c are congruent given: base ∠bac and ∠acb are congruent. prove: δabc is an isosceles triangle. when completed (fill in the blanks), the following paragraph proves that line segment ab is congruent to line segment bc making δabc an isosceles triangle. (4 points) construct a perpendicular bisector from point b to line segment ac . label the point of intersection between this perpendicular bisector and line segment ac as point d: m∠bda and m∠bdc is 90° by the definition of a perpendicular bisector. ∠bda is congruent to ∠bdc by the definition of congruent angles. line segment ad is congruent to line segment dc by by the definition of a perpendicular bisector. δbad is congruent to δbcd by the line segment ab is congruent to line segment bc because consequently, δabc is isosceles by definition of an isosceles triangle. 1. corresponding parts of congruent triangles are congruent (cpctc) 2. the definition of a perpendicular bisector 1. the definition of a perpendicular bisector 2. the definition of congruent angles 1. the definition of congruent angles 2. the definition of a perpendicular bisector 1. angle-side-angle (asa) postulate 2. corresponding parts of congruent triangles are congruent (cpctc)
Answers: 1
Mathematics, 21.06.2019 22:20
Given the following linear function sketch the graph of the function and find the domain and range. ƒ(x) = -5x + 4
Answers: 2
Mathematics, 21.06.2019 22:50
Ur environment is very sensitive to the amount of ozone in the upper atmosphere. the level of ozone normally found is 4.04.0 parts/million (ppm). a researcher believes that the current ozone level is not at a normal level. the mean of 2525 samples is 4.44.4 ppm with a standard deviation of 0.80.8. assume the population is normally distributed. a level of significance of 0.020.02 will be used. make the decision to reject or fail to reject the null hypothesis. answer tables
Answers: 3
Mathematics, 17.02.2021 14:10
Mathematics, 17.02.2021 14:10
English, 17.02.2021 14:10
Social Studies, 17.02.2021 14:10
Mathematics, 17.02.2021 14:10
History, 17.02.2021 14:10
Mathematics, 17.02.2021 14:10
English, 17.02.2021 14:10
Mathematics, 17.02.2021 14:10
Mathematics, 17.02.2021 14:10
World Languages, 17.02.2021 14:10
Biology, 17.02.2021 14:10
Mathematics, 17.02.2021 14:10
Mathematics, 17.02.2021 14:10
Mathematics, 17.02.2021 14:10
English, 17.02.2021 14:10