1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
blsea [12.9K]
4 years ago
6

Please help!! And pls show work

Mathematics
1 answer:
coldgirl [10]4 years ago
8 0
<h3>The answer to your question is k (-3) = 21!</h3>

Here's how I got this answer:

<em><u>K(a) = 2a^2 - a </u></em>

<em><u>K(a) = 2a^2 - a K(-3) = 2(-3)^2 - (-3)</u></em>

<em><u>K(a) = 2a^2 - a K(-3) = 2(-3)^2 - (-3)K(-3) = 2(9) + 3</u></em>

<em><u>K(a) = 2a^2 - a K(-3) = 2(-3)^2 - (-3)K(-3) = 2(9) + 3K (-3) = 18 + 3</u></em>

<em><u>K(a) = 2a^2 - a K(-3) = 2(-3)^2 - (-3)K(-3) = 2(9) + 3K (-3) = 18 + 3K (-3) = 21</u></em>

I hope this helps!

Also sorry for the late answer, I just got the notification that you replied to my comment, I hope I came in time!

You might be interested in
PLEASEEE NEED HELP ASAP
Rashid [163]

Answer:

Dont know..........

...............

8 0
3 years ago
A farm has only chickens and pigs , Jason counted 140 legs in total and 440 legs. How many chickens are there
Keith_Richards [23]

Answer:

  60 chickens

Step-by-step explanation:

We assume the 140 refers to the number animals (heads, noses, bodies, whatever). If all of those were chickens, there would be 280 legs. There are 160 legs more than that.

Since each pig that replaces a chicken adds 2 legs, there must be 160/2 = 80 pigs. That leaves 140 -80 = 60 chickens.

5 0
4 years ago
Find the area of a circle with a circumference of 11 pi feet
Aleksandr [31]

Answer: btw i love candy

Step-by-step explanation:

7 0
3 years ago
What is the answer to this question?
SCORPION-xisa [38]

Answer:

d

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Here is part of a timetable for the Paris to Montpellier express train service.
evablogger [386]

Answer:

772.8 km

Step-by-step explanation:

Speed is the rate of change of distance. Speed is the ratio of distance travelled to time taken. Average speed is the ratio of the total distance travelled to the total time taken, it is given by:

Average speed = Total distance / total time

The 20 07 train leaves Paris at 20:07 and reaches Montpellier at 23:34. This means that the total time taken is 3 hours 27 minutes, that is 3.45 hours.

Given that average speed is 224 km/h, hence:

Average speed = total distance / total time

224 km/h = total distance / 3.45 h

total distance = 224 * 3.45 = 772.8 km

3 0
3 years ago
Other questions:
  • Write each percent as a fraction in simplest form 45 1/2%
    15·1 answer
  • What is the radius and diameter of a circle 4.2 cm
    13·1 answer
  • Can you guys please help me
    10·1 answer
  • If j(x)=3x+1, find x if j(x)=-11. I need help quick please​
    10·1 answer
  • In the past, professional baseball was played at the Astrodome in
    6·1 answer
  • QUESTION 1<br> 3/8 - 1/4 =
    13·2 answers
  • What is the answer to 34.50r+78.50(810-r)
    8·2 answers
  • 100 point NO SAMPLE ANSWERS PLEASE!
    11·2 answers
  • Match each inequality to the number line that represents its solution. x – 99 ≤ -104 x – 51 ≤ -43 150 + x ≤ 144 75 &lt; 69 – x
    13·1 answer
  • Can you guys plz help ASAP
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!