3 years ago

Evaluate the expression 6^2 + x-x^2 for x=3

Mathematics

1 answer:

Paha777 [63]3 years ago

8 0

Answer:

Step-by-step explanation:

Given the following mathematical expression;

6² + x - x²

When x = 3

Thus, we would substitute the value of "x" into the expression;

36 + 3 - (3)²

Applying BODMAS (Bracket of Division, Multiplication, Addition and Subtraction).

36 + 3 - 9

39 - 9

30.

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What is the value of xx) = 9^x when x= -2? A. 1/81 B. 81 C. 1/81 D. 18

Paraphin [41]

Answer:

C. $9^{-2} = \frac{1}{81}$

Step-by-step explanation:

Given

$9^{x}$

Required

Find the expression where x - 2

$9^{x}$

Substitute 2 for x

$9^{-2}$

From law of indices which states

$a^{-b} = \frac{1}{a^b}$

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3 years ago

Rafael rented a truck for one day. There was a base fee of $14.99, and there was an additional charge of 87 cents for each mile

SIZIF [17.4K]

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3 years ago

Cuantos metros de valla necesitare para cercar una finca cuadrada de 54,3 de lado? por favor....

Vaselesa [24]

Answer:

217,2 m

Step-by-step explanation:

Si el lado de la finca mide 54,3 m y la finca es cuadrada entonces:

1.-El área de la finca es:

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Y el perimetro de un cuadrado es P = 4*L

Entonces

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