All categories

3 years ago

Evaluate 3x3 − 2x2 for x = -2.

Mathematics

2 answers:

yulyashka [42]3 years ago

8 0

Step-by-step explanation:

3x3-2x2

3(-2)3-2(-2)2

-6×3+4×2

-18+8

-10

I hope it will help you!

artcher [175]3 years ago

7 0

Answer:

-10

Step-by-step explanation:

Yes. All you have to remember is that double negatives result in POSITIVES.

I am joyous to assist you anytime.

You might be interested in

Determine the period of the function g(x) = (cos ;)

Romashka [77]

Answer:

6 $\pi$

Step-by-step explanation:

The period of a sinusoidal function in the form a * cos (b (x + h)) + m is $\frac{2\pi }{|b|}$ . Therefore, we can see that "b" in g(x) is 1/3 and 1/3 substituted into $\frac{2\pi }{|b|}$ is 2 $\pi$ /1/3 which is 6 $\pi$ .

5 0

3 years ago

(4y + 2.8)(1.6) how to simplify the problem<br>

anastassius [24]

Answer:

6.4y+4.48 Is the answer

5 0

3 years ago

What is the LCD for the given equation?

velikii [3]

Answer:

(x-3)^2

Step-by-step explanation:

The LCD is (x-3)^2 This is becuse x-3 is on both equations.

5 0

3 years ago

At the grocery store, peaches cost $2.60 per pound. Grace bought 36.8 ounces of peaches.

Ann [662]

Answer:

the total would be $7.00

Step-by-step explanation:

36.8 ounces = 2.3 pounds so first you add up how much it costs for 2 pounds and you get 5.20 after that you figure out how much and ounce is and that's 60 cents you add that all up and you get $7.00 (I don't know if I'm right it's been a while since I've done math like this hope it helps)

3 0

3 years ago

Find the midpoint of the line segment whose endpoints are (-2, 5) and (6, -9).

Katen [24]

We know that when $A=(x_A,y_A)$ and $B=(x_B,y_B)$ the midpoint of the line segment AB is given by:

$M=\left(\dfrac{x_A+x_B}{2},\dfrac{y_A+y_B}{2}\right)$

Here $A=(-2,5)$ and $B=(6,-9)$ so:

$M=\left(\dfrac{x_A+x_B}{2},\dfrac{y_A+y_B}{2}\right)=\left(\dfrac{-2+6}{2},\dfrac{5+(-9)}{2}\right)=\\\\\\=\left(\dfrac{4}{2},\dfrac{5-9}{2}\right)=\left(2,\dfrac{-4}{2}\right)=\boxed{\left(2,-2\right)}$

8 0

3 years ago