T = 4m² - 11
(a) Work out the value of T when m = -3
(b) Make p the subject of the formula d = 3p + 4 - Edexcel - GCSE Maths - Question 4 - 2022 - Paper 3
Question 4
T = 4m² - 11
(a) Work out the value of T when m = -3
(b) Make p the subject of the formula d = 3p + 4
Worked Solution & Example Answer:T = 4m² - 11
(a) Work out the value of T when m = -3
(b) Make p the subject of the formula d = 3p + 4 - Edexcel - GCSE Maths - Question 4 - 2022 - Paper 3
Step 1
Work out the value of T when m = -3
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Answer
To find the value of T when m = -3, we substitute -3 into the equation:
T=4(−3)2−11
Calculating the squared term:
(−3)2=9
Thus, we have:
T=4(9)−11
Next, calculate 4 times 9:
T=36−11
Finally, we obtain:
T=25
Step 2
Make p the subject of the formula d = 3p + 4
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Answer
To make p the subject of the formula, we start with:
d=3p+4
First, isolate the term involving p by subtracting 4 from both sides:
d−4=3p
Next, divide both sides by 3 to solve for p:
p=3d−4
This is the required expression for p in terms of d.
