Ask question

Ask question

All categories

4 years ago

11

What is the value of the expression 2x² – 5x + 6 when x = -2?

1 answer:

Svet_ta [14]4 years ago

3 0

Answer:

24 is correct answer

Step-by-step explanation:

$2 {x}^{2} - 5x + 6 \\ = 2 {( - 2)}^{2} - 5 \times ( - 2) + 6 \\ = 2 \times 4 + 10 + 6 \\ = 8 + 10 + 6 \\ = 24$

hope it helped you:)

You might be interested in

Find the value of X in the quadrilateral. (Picture)

Alex_Xolod [135]

Answer:

B

Hope this Helps! Have A Nice Day!!

5 0

3 years ago

Read 2 more answers

Fifty-three percent of employees make judgements about their co-workers based on the cleanliness of their desk. You randomly sel

GarryVolchara [31]

Answer:

The unusual $X$ values for this model are: $X = 0, 1, 2, 7, 8$

Step-by-step explanation:

A binomial random variable $X$ represents the number of successes obtained in a repetition of $n$ Bernoulli-type trials with probability of success $p$ . In this particular case, $n = 8$ , and $p = 0.53$ , therefore, the model is ${8 \choose x} (0.53) ^ {x} (0.47)^{(8-x)}$ . So, you have:

$P (X = 0) = {8 \choose 0} (0.53) ^ {0} (0.47) ^ {8} = 0.0024$

$P (X = 1) = {8 \choose 1} (0.53) ^ {1} (0.47) ^ {7} = 0.0215$

$P (X = 2) = {8 \choose 2} (0.53)^2 (0.47)^6 = 0.0848$

$P (X = 3) = {8 \choose 3} (0.53) ^ {3} (0.47)^5 = 0.1912$

$P (X = 4) = {8 \choose 4} (0.53) ^ {4} (0.47)^4} = 0.2695$

$P (X = 5) = {8 \choose 5} (0.53) ^ {5} (0.47)^3 = 0.2431$

$P (X = 6) = {8 \choose 6} (0.53) ^ {6} (0.47)^2 = 0.1371$

$P (X = 7) = {8 \choose 7} (0.53) ^ {7} (0.47)^ {1} = 0.0442$

$P (X = 8) = {8 \choose 8} (0.53)^{8} (0.47)^{0} = 0.0062$

The unusual $X$ values for this model are: $X = 0, 1, 7, 8$

6 0

3 years ago

Read 2 more answers

How to write 15,409 in expanded form

Y_Kistochka [10]

15x1000+4x100+9x1
I belive that is edpanded notation.

3 0

3 years ago

Read 2 more answers

Area of rectangle 12ft 6ft

Brilliant_brown [7]

12ft×6ft= area of 72ft

8 0

4 years ago

What are whole numbers, integers, and rational numbers?

professor190 [17]

Answer:

Integers

Rational Numbers

Whole Numbers

In their respectful orders.

7 0

4 years ago

Read 2 more answers