SOLUTION: 1. Rearrange the following formula to make y the subject of the equation.
a. b. c.
d=7y−4 k=−3y+5+6y
t=−8(y−1)2
2.
3t − 6 = − 2t + 6
Sol
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Question 1125864: 1. Rearrange the following formula to make y the subject of the equation.
a. b. c.
d=7y−4 k=−3y+5+6y
t=−8(y−1)2
2.
3t − 6 = − 2t + 6
Solve for t.
Prove your solution is correct.
3. The area A of a circle is given by the equation: A= π r2
where π is a constant approximately equal to 22 and r is the radius of the circle. 7
What is the radius of a circle if it has an area of 616 cm2?
4. Find the gradient and the intercept of the following two lines:
a. y=2x+4
b. 2y–2x=4
c. Are these two lines parallel? Justify your answer.
a. Expand the following 3x(y − x2 − 2x)
a. b.
b. Factorise the following expression: 4a3b + 6ab2
Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!
1. Rearrange the following formula to make the subject of the equation.
a.
b.
c.
2.
Solve for.
Prove your solution is correct.
....substitute
3.
The area of a circle is given by the equation:
where is a constant approximately equal to and is the radius of the circle.
What is the radius of a circle if it has an area of ?
4.
Find the gradient and the intercept of the following two lines:
first arrange the line’s equation into slope-intercept form which is
If is alone on the left side, then is the slope of line, and will just be the y-intercept of that line
a.
... already in slope-intercept form
so, and y-intercept
b.
so, and y-intercept
c. Are these two lines parallel? Justify your answer.
these lines are parallel because parallel lines have slopes
as we can see one line has a slope and other line
here is the graph:
a. Expand the following
b. Factorize the following expression:
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