Unit 1 Test IB Math 2 of 5
POSSIBLE POINTS: 20
(Maximum mark: 6]
25
A cuboid has the following dimensions: length = 9.6 cm, width = 7.4 cm, and height = 5.2 cm.
(a) Calculate the exact value of the volume of the cuboid, in cm?
[2]
(b) Write your answer to part (a) correct to
(i)
two decimal places;
(ii)
three significant figures.
[2]
(c) Write your answer to part (b) (ii) in the form a < 10%, where 1 Sa<10 and k e z.
2
BI SE

d≈7.07in

step-by-step explanation:

none of the above.

for one of the equations to be used in the process, there has to be a term in the equation since squared is .

since there is only a term in the first equation, we cannot derive a from completing the square.

solving with completing the square

you didn't give an question you just gave us a statement

a

step-by-step explanation:

given the 2 equations

- x + y = - 2 → (1)

2x - 3y = 4 → (2)

multiplying (1) by 2 and adding to (2) will eliminate the x- term

- 2x + 2y = - 4 → (3)

add (2) and (3) term by term

(2x - 2x) + (- 3y + 2y) = (4 - 4), simplifying gives

- y = 0 ⇒ y = 0

substitute y = 0 in either of the 2 equations for corresponding value of x

substituting in (2) gives

2x = 4 ( divide both sides by 2 )

x = 2

solution is (2, 0 ) → a