Answer:
Option B, z = 2
Step-by-step explanation:
<u>Step 1: Factor</u>
z^2 - 4z + 4 = 0
<em>(z - 2)(z - 2) = 0</em>
<em />
<u>Step 2: Solve for z</u>
z - 2 + 2 = 0 + 2 and z - 2 + 2 = 0 + 2
z = 2 and z = 2
<em>Double root at z = 2</em>
<em />
Answer: Option B, z = 2
Answer:
1) By SAS theorem, ΔADE≅ΔCDF
2) By SSS theorem, ΔBDE≅ΔBDF
Step-by-step explanation:
Consider isosceles triangle ABC (see diagram).
1. In triangles ADE and CDF:
- AD≅DC (since BD is median, then it divides side AC in two congruent parts);
- AE≅CF (given);
- ∠A≅∠C (triangle ABC is isosceles, then angles adjacent to the base are congruent).
By SAS theorem, ΔADE≅ΔCDF.
2. In triangles BDE and BDF:
- side BD is common;
- DE≅DF (ΔADE≅ΔCDF, then congruent triangles have congruent corresponding sides);
- BE≅FB (triangle ABC is isosceles, AB≅BC, AE≅CF, then BE=AB-AE, FB=BC-CF).
Be SSS theorem, ΔBDE≅ΔBDF.
Answer:
graph b
Step-by-step explanation:
it's the only one that has a positive slope
The answer to your question is A. 359.5
Sorry, I haven't learned this yet ;-;