If x = –1 and y = 2, what is the value of the expression 2x3 – 3xy ?

Answers

Answer 1

Answer: $x=-1, \ y=2 \n \n2x^3-3xy=2 * (-1)^3-3 * (-1) * 2=2 * (-1) +6=-2+6=4$

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Use the formula an = d (n − 1) + aj to write a formula for the arithmetic sequence below.2, 6, 10, 14, 18,

Answers

Answer:

$a_(n)$ = 4n - 2

Step-by-step explanation:

There is a common difference d between consecutive terms in the sequence, that is

6 - 2 = 10 - 6 = 14 - 10 = 18 - 14 = 4

This indicates the sequence is arithmetic with n th term

$a_(n)$ = a₁ + (n - 1)d

where a₁ is the first term and d the common difference

Here a₁ = 2 and d = 4 , thus

$a_(n)$ = 2 + 4(n - 1) = 2 + 4n - 4 = 4n - 2

Round 34 449 to the
a) nearest 10.
b) nearest 100.
c) nearest 1000.

Answers

Round 34,449 nearest 10.

Answer:

34 450

34 400

34 000

this is the answer your welcome

Let (2x-12) degrees represent the measure of an acute angle. What are the possible values of x?

Answers

Acute angle is an angle measure less than 90 degrees
Right angle is an angle that measure 90 degrees
Obtuse angle is an angle that measure more than 90 degrees.

In the given situation, we need to find the value of x of an acute angle with the given situation
=> (2x-12)
=> 0 < (2x -12) < 90
=> 12 < 2x < 102
=> 6 < x < 51

Let’s check our answer
=> 2 (51- 6)
=> 102 – 12
=> 90
Thus, the value of x = 51 degrees

What number divided by 2 will give 12 as quotient