3 years ago

3. What property is used to show that 3(4 – 6) = 12 – 18?

Mathematics

1 answer:

Veseljchak [2.6K]3 years ago

7 0

Answer:

You are using <u>Commutative Property </u>

Step-by-step explanation:

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Let f(x) = x2 − 81. Find f−1(x).

Umnica [9.8K]

F(x) = x² - 81

Finding f⁻¹(x) the inverse function

Let y = f(x) and solve for x.

y = x² - 81

y + 81 = x²

x² = y + 81

x = √(y + 81)

Recall f(x) = y, that means x = f⁻¹(y)

x = √(y + 81)

f⁻¹(y) = √(y + 81)

Therefore f⁻¹(x) = √(x + 81)

3 0

3 years ago

elaine has a rectangular gift wrapper that measure 30 cm by 25 cm she wants to cut it into square sheets of the same size to be

12345 [234]

Answer:

Square length of 5cm

Step-by-step explanation:

Given

$Length = 30cm$