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
CaHeK987 [17]
4 years ago
15

43. Simplify (k – 5) - (k2 + 8).

Mathematics
2 answers:
CaHeK987 [17]4 years ago
4 0

Answer:

D.-k^2+k-13

Step-by-step explanation:

(k-5)-(k^2+8)

Expand the brackets. Remember brackets mean to multiply.

k*k^2= k^2+k

-5*+8= -13

Add values together.

k^2+k-13

lesantik [10]4 years ago
3 0

Answer:

(D) -k2 + k - 13

Step-by-step explanation:

Pulling out like terms :

2.1     Pull out like factors :

  -k2 + k - 13  =   -1 • (k2 - k + 13)

Trying to factor by splitting the middle term

2.2     Factoring  k2 - k + 13

The first term is,  k2  its coefficient is  1 .

The middle term is,  -k  its coefficient is  -1 .

The last term, "the constant", is  +13

Step-1 : Multiply the coefficient of the first term by the constant   1 • 13 = 13

Step-2 : Find two factors of  13  whose sum equals the coefficient of the middle term, which is   -1 .

     -13    +    -1    =    -14

     -1    +    -13    =    -14

     1    +    13    =    14

     13    +    1    =    14

Observation : No two such factors can be found !!

Conclusion : Trinomial can not be factored

Final result :

 -k2 + k - 13

Processing ends successfully

plz mark me as brainliest :)

You might be interested in
PLEASE HELP WILL GIVE 15 POINTS
natka813 [3]

Answer:

Step-by-step explanation:

Hello, when you have an equation like y = ax+b you know that this is a line.

In this example, the function is defined in two different intervals.

For x < 1 this is the line y = 4 + x

and for x>=1 this is the line y = 4 - 2x

At the frontier, x= 1, we have 4+1=5 on one side and 4-2=2 on the other side, we we expect a "jump" in the graph.

Except that "jump"you just have to draw lines, so if you have two points you can draw them right.

For x<1, the line is passing by (-4,0) and (0,4)

And you have to stop for x<1 so the point (1,5) is not on the graph.

for x>=1 the points (1,2) and (2,0) are on the graph and we just have to draw the line.

I attached the graph.

Thanks

6 0
3 years ago
You travel 10.7 miles (1 way) for work 5 days a week. On weekends you travel 5.8 miles. The last time you filled your tank you p
Kamila [148]

Answer:

<u>1. </u>0.0731 miles per gallon

2.  $967.46

Step-by-step explanation:

The <u>I way</u><u> </u>travel for 5 days to work will cover: 10.7  miles.

A two travel to work and back home will be : 10.7* 2 =21.4 miles

On weekends miles covered = 5.8 miles

Last time the tank was filled with = 17.2 gallons of gas

The Trip A meter read = 389.30 ----this is the average fuel mileage

This means the trip consumed : 389.30 - 17.2 = 372.1 gallons of gas

Total miles covered are : 21.4 + 5.8 = 27.2 miles

1. Miles per gallon for the car will be;

  372.1 gallons of gas = 27.2 miles

          1 gallon of gas = ?

{27.2 *1} / 372.1 =  <u>0.0731 miles per gallon</u>

2. Cost of  gas per week will be ;

   In the United States :

   1 gallon of gasoline = $2.60

     372.1 gallons of gas = ? $2.60 * 372.1 = $967.46

3 0
3 years ago
Please answer it correctly please help me please if it’s correct I will mark you as a brainliest
Contact [7]

Answer:

27%

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Solve the right triangle. Round decimals to the nearest tenth
LekaFEV [45]

Answer: 42

Step-by-step explanation:

angle t is 42 degrees

5 0
2 years ago
Find the area of the four walls of a cubical room whose side measures 5m. Find the cost of white washing the room at the rate of
NikAS [45]
We know that one wall side is 5m.
To find the area of one wall, we do 5²=25m²
We know there is 4 walls. So we have to find total area of all four walls.
Which is 25×4=100m²
To find the total cost of white washing the room, we have to do:
100(total area)×23(cost per m²)=$2300
So the total cost of the area is $2300
7 0
3 years ago
Other questions:
  • What is the answer?​
    8·1 answer
  • A car traveled 88 km in 1 hour, 90 km in the next 2 hours, and then 76 km in 1 hour before reaching its destination. what was th
    6·1 answer
  • When number can each term of the equation be multiplied by to eliminate the fractions before solving 6-3/4x+1/3=1/2x+5​
    14·1 answer
  • Cuanto es la raíz cuadrada de 286
    15·1 answer
  • Complete the solution of the equation. find the value of y when x equals 1. <br><br>9x +7y= -12​
    15·1 answer
  • HELPPP FORCE AND MOTION 7th grade!!! <br><br> 15 points!!! And a brainlist!!
    9·2 answers
  • Write the interval notation corresponding to set notation {x | x &lt; - 4}
    11·1 answer
  • Pleasee help ill give brainliest
    6·2 answers
  • Find the value of f(2)
    14·1 answer
  • Jon buys 3 shirts for 20$ write as a rate
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!