Given the function f (x) = 8x2 - 14x – 10, find f -2).

Answers

Answer 1

Answer:

Remember from now on ;

If the value of f(x) is asked, we put what thing written in parentheses inside the function instead of x. It doesn't different what is written, we just have to replace it with x.

Got it ?

Now Let's do it .....

$f( x) = 8 {x}^(2) - 14x - 10$

$f( - 2) = 8({ - 2})^(2) - 14( - 2) - 10 \n$

$f( - 2) = 8 * 4 + 28 - 10$

$f( - 2) = 32 + 28 - 10$

$f( - 2) = 60 - 10$

$f( - 2) = 50$

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And we're done...

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find the equation of the line that passes through the point of intersection of 3x-y=10 and 4x+2y=10, and that is perpendicular to 2x-6y+24=0
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The vertices of ∆ABC are A(-2, 2), B(6, 2), and C(0, 8). The perimeter of ∆ABC is 14.8099
units, and its area is
square units.

Answers

Perimeter= 22.81

Area= 24

GO PLATO USERS

the perimeter is 22.81 you can use GeoGebra to do this easily.

______________ is the human use of spoken or written words as a communication system. a. Syntax b. Grammar c. Language d. Vocabulary Please select the best answer from the choices provided A B C D

Answers

That would be C, language.

Which of the following is a polynomial with roots negative square root of 5, square root of 5, and 3?x3 − 2x2 − 3x + 6
x3 + 2x2 − 3x − 6
x3 − 3x2 − 5x + 15
x3 + 3x2 − 5x − 15

Answers

The polynomial with those roots would be:

y = (x + √5)(x - √5)(x - 3)
▬▬▬▬▬▬▬▬▬▬▬ multiply this out to get
y = (x² - 5)(x - 3)

y = x³ - 3x² - 5x +15

Answer:

The correct answer is the first one

Step-by-step explanation:

x3 − 2x2 − 3x +

Use the quadratic equation and you will get a polynomial with roots negative square root of 5, square root of 5, and 3

during a bike challenge, riders have to collect various colored ribbons. each 1/2 mile they collect a red ribbon, each 1/8 mile they collect a green ribbon, and each 1/4 mile they collect a blue ribbon. which colors of ribbons will be collected at the 3/4 mile marker?

Answers

The correct answer is:
green and blue.

Explanation:
We want to see which fractions $(3)/(4)$ is a multiple of. We know that $(3)/(4)$ is a multiple of $(1)/(4)$ , because $(1)/(4)$ *3= $(3)/(4)$ .

We can divide fractions to determine if $(3)/(4)$ is a multiple of $(1)/(2)$ :
$( (3)/(4))/( (1)/(2))$ ;

in order to divide fractions, flip the second one and multiply:
$(3)/(4)$ )* $(2)/(1)$ = $(6)/(4)$ =1 $(1)/(2)$ .
This did not divide evenly, so $(3)/(4)$ is not a multiple of 1/2.

Checking to see if $(3)/(4)$ is a multiple of $(1)/(8)$ , $( (3)/(4))/( (1)/(8))$ ;

flip the second one and multiply:
$(3)/(4)$ * $(8)/(1)$ = $(24)/(4)$ =6.
This divided evenly, so $(3)/(4)$ is a multiple of $(1)/(8)$ .

Answer: Hello there!

As we know, each 1/2 mile there is a red ribbon, each 1/8 mile there is a green ribbon, and each 1/4 mile there is a blue ribbon.

We want to know which color of ribbons is in the 3/4 mile marker.

then we need to see if 3/4 is a multiple of some of the previous numbers.

Start with the red ribbons, we need to see the quotient between 3/4 and 1/2, if the result is a whole number, then 3/4 is a multiple of 1/2

this is q = (3/4)/(1/2) = (3/4)*2 = 6/4

here we haven't a whole number, then there is no red ribbon at the 3/4 mile marker.

now with the green ones:

(3/4)/(1/8) = (3/4)*8 = 24/4 = 6

there we have a whole number, this means that at the 3/4 mile marker, we will see the sixth green ribbon, then we have a green ribbon in this marker.

now with the blue:

(3/4)/(1/4) = (3/4)*4 = 3

At the 3/4 mile marker, we will see the third blue ribbon, then there is a blue ribbon in this marker.

Then we know that in the 3/4 mile marker, there are a green and a blue ribbon.

∠A and ∠B are complementary angles of right triangle ABC, cos A = 0.83, and cos B = 0.55. What is sin A sin B?

Answers

Complementary angles are two angles which add up to 90° or forms a right angle. First, we find the value of A and B.

A = arccosine (0.83) = 34°
B = 90 - 34 = 56°

Thus, sin A = 0.56 and sin B = 0.83.

What is the value of x? 2/3(x-6)=6

Answers

Answer: x=15

Step-by-step explanation: THIS IS THE CORRECT ANSWER

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