Mathematics, 13.10.2019 18:30 skdfj3777
Arectangular photograph is mounted on a square piece of cardboard whose sides have length x. the border that surrounds the photo is 3 inches on each side and 4 inches on both the top and the bottom. which of the following expressions represents the area of the photograph? select all that apply. a: xsquared b: (x+8)(x+6) c: (x-8)(x-6) d: xsquared +48 e: xsquared -48 f: xsquared+14x+48 g: xsquared-14x+48
Answers: 2
Mathematics, 21.06.2019 21:30
Every weekday, mr. jones bikes from his home to his job. sometimes he rides along two roads, the long route that is shown by the solid lines. other times, he takes the shortcut shown by the dashed line. how many fewer kilometers does mr. jones bike when he takes the shortcut instead of the long route?
Answers: 1
Mathematics, 21.06.2019 23:30
Given: ad¯¯¯¯¯ is an altitude. prove: ab2+ac2=cb2 right triangle a b c with right angle a. point d lies on side b c and segment a d is drawn. angle a d c is a right angle. drag and drop a reason into each box to correctly complete the two-column proof. statement reason ad¯¯¯¯¯ is an altitude, and ∠bac is a right angle. given ∠adb and ∠adc are right angles. definition of altitude ∠bac≅∠bda ? ∠bac≅∠adc ? ∠b≅∠b ? ∠c≅∠c reflexive property of congruence △abc∼△dba ? △abc∼△dac aa similarity postulate abbd=cbab ? ab2=(cb)(bd) cross multiply and simplify. acdc=cbac polygon similarity postulate ac2=(cb)(dc) cross multiply and simplify. ab2+ac2=ab2+(cb)(dc) addition property of equality ab2+ac2=(cb)(bd)+(cb)(dc) substitution property of equality ab2+ac2=(cb)(bd+dc) ? bd+dc=cb segment addition postulate ab2+ac2=cb2 substitution property of equality
Answers: 1
Arectangular photograph is mounted on a square piece of cardboard whose sides have length x. the bor...
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