Look at the right triangle abc below: right triangle abc has a right angle at b. segment bd meets segment ac at a right angle. a student made the following chart to prove that ab2 + bc2 = ac2: statement justification 1. triangle abc is similar to triangle bdc 1. angle abc = angle bdc and angle bca = angle dcb 2. bc2 = ac x dc 2. bc ÷ dc = ac ÷ bc because triangle abc is similar to triangle bdc 3. triangle abc is similar to triangle adb 3. angle abc = angle adb and angle bac = angle dab 4. ab2 = ac x ad 4. ab ÷ ad = ab ÷ ac because triangle abc is similar to triangle abd 5. ab2 + bc2 = ac x ad + ac x dc = ac (ad + dc) 5. adding statement 2 and statement 4 6. ab2 + bc2 = ac2 6. ad + dc = ac what is the flaw in the student's proof?

answer: i would say b

step-by-step explanation:

with the way the question is worded, i believe b is the answer

the cost of the apple depends on the weight

he used the algebra tiles correctly.

step-by-step explanation:

given : 3x(2x-1)

solution :

since he used algebra tiles .

armando's solution is the same in the solution shown in figure

as he distributed 2x into x and x and wrote them vertically

and also write   -1 vertically

and 3x into x and x and x and wrote it horizontally

performing the multiplication in the algebra tiles we get

and solving the given expression :

3x(2x-1)

since solving the expression using tiles   and solving the expression algebraically we get the same answer

thus   we can choose the first statement as the answer to this problem which is "he used the algebra tiles correctly".

answer: a.

step-by-step explanation: the answer is a. because, you need to converge the fractions to find a solution.

the answer is b. 60. each interior angle in 120, so the exterior angle must be 60 in order to add up to 180

step-by-step explanation: