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4 years ago

Given:g(x)=x^3-2x^2+x-3.Findg(-2)

Mathematics

2 answers:

liraira [26]4 years ago

5 0

Answer:

-21

Step-by-step explanation:

g(x) = $x^{3} - 2x^{2} + x - 3$

g(-2) = $(-2)^{3} - 2(-2)^{2} -2 -3$ = -8 -8 -5 = -21

inna [77]4 years ago

4 0

Answer:

Step-by-step explanation:

g(-2) = (-2)³ - 2*(-2)²+ (-2) - 3

= -8 -2*4 - 2 - 3 = -8 - 8 -2 -3 = - 21

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Two students in different classes took the same math test. Both students received a score of 87. In student A's class the mean w

Monica [59]

Answer: Student B will score in the top of the class.

Step-by-step explanation:

Here both the students of class A and B scored 87.

Therefore, the value of random variable for both class is, x = 87

According to the question, mean for the class A is, $\mu_1 = 78$

And, standard deviation for class A, $\sigma_1 = 5$

Thus, the z-score for Class A,

$z_1 = \frac{x-\mu_1}{\sigma_1}$

$z_1 = \frac{87-78}{5}$ = 9/5 = 1.8

And, $z_1(1.8)=0.9641$

Also, mean for the class B is, $\mu_2 = 76$

And, standard deviation for class B, $\sigma_2 = 4$

Thus, the z-score for Class B,

$z_2 = \frac{x-\mu_2}{\sigma_2}$

$z_2 = \frac{87-76}{4}$ = 11/4 = 2.75

$z_2(2.75)=0.9970$

Thus, $z_2 > z_1$

Therefore, student B scored in the top 10% of their class.

7 0

3 years ago

What’s the solution?

bulgar [2K]

4x - 4y = -4

- (4x + y = 16)

___________

5y = -20

Now on solving the equation we have:

= 5y = -20

= y = -20/5

= y = -4

If y = -4 then,

= 4x + y = 16

= 4x + (-4) = 16

= 4x = 16 + 4

= x = 20/4

= x = 5

Thus, x = 5, y = -4

4 0

3 years ago

Simplify: –3(y 2)2 – 5 6y

aleksandr82 [10.1K]

The answer is -3y^4+6y-5

8 0

4 years ago

Which ordered pairs are solutions to the inequality y-4x<-6

AURORKA [14]

(-2, -14)
(3,5)
This question can help you

7 0

3 years ago

Three friends arrive at a party their arrival increases the number of people at the party by 20% in total how many people are no

rodikova [14]

Answer:

18 people

Step-by-step explanation:

Let the number of people at the party before the arrival be x

20% of x = 3

20/100 * x = 3

20x = 300

x = 300/20

x = 15

Adding the friends , we have 15 + 3 = 18

5 0

3 years ago