In 10 words or fewer, define rectangle.
2 answers:
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see explanation below
(1) ×
=
= 0.2
(2) ×
=
= 0.24
(3) 2 = 2 +
= 2.75
(4) 3 = 3 + 0.9 = 3.9
(5) 1.25 = 1 =
(6) 3.29 = 3 =
(7) 0.65 = =
in simplest form
(8) 5.6 = 5 = 5
=
(9) he is incorrect
×
=
= 0.6 ≠ 3.5
40°, 60° and 80°
sum the parts of the ratio 2 + 3 + 4 = 9
The sum of the angles in a triangle = 180°
Divide 180 by 9 to find one part of the ratio
= 20° ← 1 part of the ratio
2 parts = 2 × 20 = 40°
3 parts = 3 × 20 = 60°
4 parts = 4 × 20 = 80°
The angles in the triangle are 40°, 60° and 80°