Answer:
15
Step-by-step explanation:
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Answer:
1. A = 40 units²
2. A = 72 units²
3. B) 45
Step-by-step explanation:
1. This shape comprises 4 congruent triangles with base of 5 units and height of 5 units.
Area of a triangle = 1/2 x base x height
Therefore, area of polygon = 4(1/2 x 5 x 4)
= 40 units²
2. This shape comprises two pairs of congruent triangles.
Area of a triangle = 1/2 x base x height
Therefore, area of polygon = 2(1/2 x 2 x 6) + 2(1/2 x 10 x 6)
= 72 units²
3. Count the number of shaded squares:
9 + 8 + 7 + 6 + 5 + 4 + 3 + 2 + 1 = 45 units²
Answer:
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Step-by-step explanation:
4m +(-5)(3m) + (-5)(-10)+126
4m +-15m + 50=126
-11m + 50 = 126
-11m + 50 - 50=126 - 50(take from both sides)
-11m = 76
-11/-11 = 76/-11
m = -76/11
