X 1, 2, 3, 4 Y -2, -10, -18, -26
Explanation:
Statements are numbered; reasons are in italics.
1. ABCD is a parallelogram with AB≅CD and BC≅AD. <em>Given; definition of a parallelogram</em>.
2. Diagonal AC ≅ diagonal CA. <em>Reflexive property of congruence</em>.
3. ΔABC ≅ ΔCDA. <em>SSS congruence postulate</em>.
4. ∠B ≅ ∠D. <em>CPCTC</em>. (Opposite angles B and D are congruent.)
5. Diagonal BD ≅ diagonal DB. <em>Reflexive property of congruence</em>.
6. ΔABD ≅ ΔCDB. <em>SSS congruence postulate</em>.
7. ∠A ≅ ∠C. <em>CPCTC</em>. (Opposite angles A and C are congruent.)
Answer:
16
Step-by-step explanation:
Students 8 x
Time taken (hours) 18 18 - 12 = 6
If number of students increases, the work will completed in less hours.
So inverse proportion
Additional students required = 24 - 8 = 16
Answer:
4.5 cm^2
Step-by-step explanation:
Area of trapezoid = ((base 1 + base 2) / 2) * height
According to the figure:
base 1 = 1.1 cm
base 2 = 3.4 cm
height = 2 cm
Now plugin into formula:
A = ((b1 + b2 ) / 2) * h
A = ((1.1 + 3.4) /2) * 2
A = ( 4.5/2 ) * 2
A = 2.5cm * 2cm
A = 4.5 cm^2
//<em>Hope</em><em> </em><em>it</em><em> </em><em>help</em><em>s</em>
