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NikAS [45]
2 years ago
12

. -((-55) + 2) How to solve this including step by step

Mathematics
1 answer:
skad [1K]2 years ago
7 0

Answer:

57

Step-by-step explanation:

apply the rule: - (a)=a

- (-55)=55

=55+2

add the numbers: 55+2=57

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If m angle ECD is six less than five times m angle BCE, and mangle BCD = 162º. find each
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Answer:

see explanation

Step-by-step explanation:

let ∠BCE = x then ∠ECD = 5x - 6 and

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x + 5x - 6 = 162, that is

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6x = 168 ( divide both sides by 6 )

x = 28

Hence

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∠ECD = 5x - 6 = (5 × 28) - 6 = 140 - 6 = 134°

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