Write down an expression for the total cost of four pencils and two rubbers
1 answer:
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So,
In order to simplify a fraction, we have to factor both the numerator and the denominator.
Cross out ones.
In order to simplify a fraction, we have to factor both the numerator and the denominator.
Cross out ones.
Answer:
see explanation
Step-by-step explanation:
Let ∠4 be x then ∠6 is x
∠4 and ∠6 are same side interior angles and are supplementary, thus
x + x = 180
Multiply through by 8 to clear the fraction
8x + x = 1440, that is
9x = 1440 ( divide both sides by 9 )
x = 160
Hence ∠4 = 160° and ∠6 = 160° ÷ 8 = 20°