substitution method
Step-by-step explanation:
- use second equation
- make x subject of the formula
- put it back in the first equation
- solve to find the value of y
- substitute y value in any equation between the two.
- then you get x value
First of all, the square root of 28 is 5.3. That is because 5.3*5.3=28.09 but mainly just 28. So now that we know what the square root of 28 is now we can multiply it by 3.
5.3*3= 15.9
Your final answer is 15.9
First, you distribute the 3 into the brackets,
<span>3(x - 2) + 5x
=</span><span>3(x) + 3(-2) + 5x
=3x - 6 + 5x
Adding the like terms, 3x and 5x, gives you
=8x - 6</span>
344.6 x 0.1 - as it one tenth the size
= 34.46 square miles
10•3 is 10+10+10=30, multiplication is adding a number to its self a certain amount of times, so if its 10•3, its adding 10+10+10
