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Amyra2003
26.10.2020 •
Mathematics
I need help with these two problems please.
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Ответ:
2. 4
3. 10
Step-by-step explanation:
2. (3 x 5² ÷ 15) - (5 - 2²)
3 x 25 ÷ 15
75 ÷ 15
5 - (5 - 2²)
5 - (5 - 4)
5 - 1
[4]
3. (22 ÷ 2 - 2 x 5)² + (4 - 6 ÷ 6)²
11 - 2 x 5
11 - 10
(1)²
1 + (4 - 6 ÷ 6)²
1 + (4 - 1)²
1 + 3²
1 + 9
[10]
Ответ:
Every angle in a triangle adds up to 180°.
45° + 55° = 100°
180° - 100° = 80°