Alex subtracted two fractions as follows. Examine his work. 54 - 3
,
1
Step 1: 549
387
Step 2:55
3
56
63
3
2
Step 3:5
20
56
Step 4;
63
36
63
Step 5: 535 - 35= 2
What mistake, if any, did he make?

191 students play sports and ninety-seven 10th graders were surveyed.

step-by-step explanation:

i think it will be zero as slope has a formula of difference between initial and final distance divided by itz time interval

answer:   the paragraph proof is mentioned below.

step-by-step explanation:

given: in a δxwy where

such that, ∠wzx ≅ ∠yzx and zw≅zy

we have to prove that: segment zx is a perpendicular bisector of segment wy.

prove: since, zw≅zy ⇒ ∠wzy is a supplementary angle.

then, ∠wzy= 180°

⇒∠wzx + ∠yzx = 180° ( because xz divides ∠wzy into two parts)

but, ∠wzx ≅ ∠yzx ( given)

⇒∠wzy+∠wzy=180° ( by substitution)

⇒2∠wzy=180°

⇒∠wzy=90°

⇒∠wzy=∠yzx =90°

therefore, xz⊥wy where wz=zy

⇒zx is a perpendicular bisector of wy.

slope =   (y2 -y1) ÷ (x2 -x1)

slope = (0 -0) / (-5, -7)

slope = 0 / -12 = 0

the slope of the line is zero.   it is perfectly horizontal.

step-by-step explanation: