All categories

3 years ago

10. Given the function below, what is f(3)? f(x) = 2x2 - x-5

Mathematics

1 answer:

Nostrana [21]3 years ago

8 0

Answer:

f(3) = 10

Step-by-step explanation:

f(3) = 2(3)^2 - (3) - 5

f(3) = 2(9) - (3) - 5

f(3) = 18 - 3 - 5

f(3) = 10

You might be interested in

The volume of a room is 640 cubic feet. If the length is 10 feet and the width is 4 feet, find the height

lorasvet [3.4K]

Answer:

Step-by-step explanation:

Divide 640 by 40.

7 0

2 years ago

Read 2 more answers

Find the critical points and determine if the function is increasing or decreasing on the given intervals.y = 9x^4 + 10x^3Left c

lina2011 [118]

$y=9x^4+10x^3$

To find the critical points, first we derivate the function:

$\frac{dy}{dx}=36x^3+30x^2$

dy/dx has roots x = 0 and x = -5/6.

When x < -5/6, we can check that dy/dx is negative. When -5/6 < x < 0, we can check that dy/dx is positive. And, when x > 0, we can check that dy/dx is also positive.

Therefore, y is increasing when x > -5/6 and decrasing when x < -5/6. y has inflection points at x = -5/6 and x = 0

5 0

1 year ago

There are 8 roll of carpet each carpet roll i 6 yard longhow long are the 8 roll in feet

vlabodo [156]

The given 8 rolls will have a length of 144 feet or in other words, they will be 144 feet long.

Here, we are given that thee are 8 rolls of carpet and each roll is 6 yards long.

We know that the conversion factor of yards to feet is as follows-

1 yard = 3 feet

Thus, 6 yards = (6 × 3) feet

= 18 feet

⇒ each roll of carpet is 18 feet long

Since there are a total of 8 carpets given, the length of all the 8 rolls will be given as follows-

18 × 8

= 144

Thus, we find that the given 8 rolls will have a length of 144 feet or they will be 144 feet long.

Learn more about the unitary method here-

brainly.com/question/24587372

#SPJ4

5 0

2 years ago

-x + 2y = 3 2x – 3y = -6

s2008m [1.1K]

Answer:

x = -3

y = 0

Step-by-step explanation:

Given equations :- 

-x + 2y = 3 ....... ( i )

2x - 3y = -6 ....... ( ii )

From ( i ) 

-x + 2y = 3

-x = 3 - 2y

x = 2y - 3 ........ ( iii )

From ( ii ) 

2x - 3y = -6

2x = -6 + 3y

$x = \frac{ - 6 + 3y}{2}$

........ ( iv )

Equating ( iii ) and ( iv )

x = x

$2y - 3 = \frac{ - 6 + 3y}{2}$

4y - 6 = -6 + 3y

4y - 3y = -6 + 6

y = 0

Putting value of y in ( iii )

x = 2y - 3

x = 2 ( 0 ) - 3

x = -3

4 0

3 years ago

Please help show work! asap:)))

torisob [31]

Step-by-step explanation:

please give me brainlest

6 0

3 years ago

Read 2 more answers