Place value can be used to subtract 4.23 and 2.75 because, in order to subtract, you must line up the whole numbers together, the tenths place together, and the hundredths place together.
Lining them up: Whole= W Tenths place= T Hundredths place= H
W T H
4 . 2 3
- 2 . 7 5
-------------------
1 . 4 8
Answer:
the answer is <em><u>X</u></em><em><u>=</u></em><em><u>-</u></em><em><u>3</u></em>
<em><u>1</u></em><em><u>)</u></em><em><u> </u></em><u>5</u><em><u>x</u></em><u>^</u><u>2</u><u>+</u><u>1</u><u>7</u><em><u>x</u></em><u>+</u><u>1</u><u>4</u><u>=</u><u>0</u>
<u>2</u><u>)</u><u>5</u><em><u>x</u></em><u>^</u><u>2</u><u>+</u><u>1</u><u>7</u><em><u>x</u></em><em><u>=</u></em><em><u>-</u></em><em><u>1</u></em><em><u>4</u></em><em><u>+</u></em><em><u>0</u></em>
<em><u>3</u></em><em><u>)</u></em><em><u>2</u></em><em><u>5</u></em><em><u>x</u></em><em><u>+</u></em><em><u>1</u></em><em><u>7</u></em><em><u>x</u></em><em><u>=</u></em><em><u>-</u></em><em><u>1</u></em><em><u>4</u></em>
<em><u>4</u></em><em><u>)</u></em><em><u>4</u></em><em><u>2</u></em><em><u>x</u></em><em><u>=</u></em><em><u>-</u></em><em><u>1</u></em><em><u>4</u></em>
<em><u>5</u></em><em><u>)</u></em><em><u>4</u></em><em><u>2</u></em><em><u>x</u></em><em><u>/</u></em><em><u>-</u></em><em><u>1</u></em><em><u>4</u></em>
<em><u>6</u></em><em><u>)</u></em><em><u>x</u></em><em><u>=</u></em><em><u>-</u></em><em><u>3</u></em>
Answer:
2x= 3x-7
-x=-7
x=7
so, the first option
Step-by-step explanation:
Answer:

Step-by-step explanation:
Given:

Required
Rewrite in vertex form
The vertex form of an equation is in form of: 
Solving: 
Subtract 2 from both sides


Factorize expression on the right hand side by dividing through by the coefficient of x²


Get a perfect square of coefficient of x; then add to both sides
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<em>Rough work</em>
The coefficient of x is 
It's square is 
Adding inside the bracket of
to give: 
To balance the equation, the same expression must be added to the other side of the equation;
Equivalent expression is: 
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The expression becomes



Factorize the expression on the right hand side





Make y the subject of formula

<em>Solved</em>