Answer:
x = 21
Explanation:
The two remaining angles must add to 90 degrees since a triangle adds to 180
3x+6 +x = 90
4x+6 =90
4x = 90-6
4x = 84
Divide by 4
4x/4 = 84/4
x = 21
The greatest common factor is 50
The justification of the third step in her proof of the property of logarithms is;
; Power rule of exponents
<h3>What are properties of Logarithms?</h3>
From the full question, the second step stopped at;

Now, according to Power Rule for Exponents we know that (a^m)ⁿ = a^(m*n). That means that to raise a number with an exponent to a power, we will multiply the exponent times the power.
Thus,
will give us
using power rule of exponents
Read more about Properties of Logarithms at; brainly.com/question/14765705
<h2>
ANSWER</h2>
A motorcycle goes 120 km in 3 l of petrol. How long will it go in 6 l of petrol?
Total kilometres covered ÷ number of litres of petrol used. So 40kmpl is your bikes average fuel consumption for a litre of petrol. 600 ÷ 40 = 15 litres . Therefore , you require 15 litres of petrol to travel a distance of 600 kilometres.
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