НИК LEVEL 2 TASK 10
Using each of following numbers once,
write an expression equal to 9:
NUMBERS & SYMBOLS
18 4 12 6
[(
+
х
]
speaker notes

(12 ÷ 4) × (18 ÷ 6)

Step-by-step explanation:

(12 ÷ 4) × (18 ÷ 6)

If we solve this or simply this, we would get 9 as our result.

Let's solve and see. Mind you, we've used each of the given numbers just once in the expression.

Thus:

(12 ÷ 4) × (18 ÷ 6)

Solve the parentheses first

3 × 3 = 9.

Therefore,

(12 ÷ 4) × (18 ÷ 6) = 9

answer: 204

step-by-step explanation:

we are told that the revenue is

x⋅(4080−10x)=−10x^2+4080x

this is a quadratic function, so to maximize it we should find the x-value of its vertex. recall that the x-value of the vertex of the parabola ax^2+bx+c is given by the formula −b/2a.

so in this case, we have a=−10 and b=4080, so the x-value of the vertex is

−b/2a= −(4080)/2(−10)=204

think the answer would beb