cybilmariejensen
03.11.2019 •
Mathematics
Quick and explain. im ofeering 2opts (more than its worth) and brainliest answer
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Ответ:
(a) The discriminant is 49.
(b) There are 2 solutions and they are rational.
(c) The real solutions are x = 3 and x = -0.5
Step-by-step explanation:
(a) To find the discriminant you must plug a, b, and c into
so
.
(b) The number of solutions can be found by graphing the equation. They are rational because they are either positive or negative numbers and can be represented by a quotient.
(c) The solutions can be found by factoring. I forget how to find irrational solutions sorry.
I hope this helps!
Ответ:
part a) draw two triangles, translating one of them to the right.
part b) Consider triangles ΔYXB and ΔYZA. In these triangles:
∠Y is common, then ∠XYB≅∠ZYA (additional information that is needed);∠YXB≅∠YZA (given);XY≅ZY (given).Therefore, these two triangles have two congruent angles adjacent to congruent sides. By the ASA Postulate, ΔYXB≅ΔYZA.
ASA Postulate: If two angles and the included side of one triangle are congruent to two angles and the included side of a second triangle, then the triangles are congruent.
part c) flow chart proof:
XY≅ZY (given);XB≅ZA (implies);YB≅YA (implies).