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aksik [14]
3 years ago
5

Simplify the expression. 4 + 18 ÷ 2 – 1 20 22 12 10

Mathematics
1 answer:
patriot [66]3 years ago
6 0

The order you have to work it out is is
Brackets
Indices
Divide
Multiply
Add
Subtract
There are no brackets or indices so you start with the dividing, then you add, then you subtract. This is called bidmas.

18/2=9
9+4=13
13-1=12
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32.50+4.50x


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ASE
eimsori [14]

Answer:

128 deg

Step-by-step explanation:

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<em>m<CBE + m<C + m<D + m<DEB = 360</em>

Angles ABC and CBE are a linear pair so the sum of their measures is 180 deg.

m<ABC + m<CBE = 180

115 + m<CBE = 180

m<CBE = 65

m<C = x

m<D = 90

Angles DEB and DEF are a linear pair so the sum of their measures is 180 deg.

m<DEB + m<DEF = 180

m<DEB + m<103 = 180

m<DEB = 77

<em>m<CBE + m<C + m<D + m<DEB = 360</em>

65 + x + 90 + 77 = 360

x + 232 = 360

x = 128

Answer: 128 deg

<em />

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3 years ago
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