Ive got a big maths test tomorrow ask me questions on fractions or percentages , formula , significant figures , Pythagoras anyt
1 answer:
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Answer:
Step-by-step explanation:
We want to write the quadratic equation whose roots are 2 and -2, and whose leading coefficient is 4.
Since 2 and -2 are roots, are factors of this quadratic function.
The factored form is given as:
Since the leading coefficient is 4, a=4
Therefore the equation becomes:
Recognize and expand using difference two squares.
The required equation is:
Perpendicular lines meet at a right angle.
To construct perpendicular lines, it is necessary to <em>(c) Draw arcs on either side of a given point on the line </em>
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<u>The steps to draw perpendicular lines are as follows:</u>
- <em>Place the compass at the endpoint of a line</em>
- <em>Draw two arcs with the pencil end of the compass on either side of the point, off the line</em>
- <em>Place the compass at the other endpoint of the line</em>
- <em>Repeat step 2 to intersect with the arcs at step 2</em>
- <em>Trace the point of intersection of both arc to the line.</em>
In the above steps, step 2 and 4 indicates that arcs must be drawn at either sides of the point of the perpendicular line
<em>This means that: (c) is true</em>
See attachment for construction of perpendicular lines
Read more about perpendicular lines at:
