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
miv72 [106K]
3 years ago
14

Given that -15 is a root of x² +mx +45 = 0 find the constant m​

Mathematics
1 answer:
o-na [289]3 years ago
5 0

Answer:

m = 18

Step-by-step explanation:

Given :

=> -15 is a root of the polynomial

=>  It is a zero to the solution.

Process :

Substitute -15 in place of x.

=> (-15)² + (-15)m + 45 = 0

=> 225 + 45 - 15m = 0

=> 15m = 270

=> m = 270/15

=> m = 18

You might be interested in
Write an equation for this linear function. <br>f(0)=3 and f(3)=0 <br><br>f(x)=
Jlenok [28]

Answer:

f(x)=-x+3

Step-by-step explanation:

contains (0, 3) and (3, 0)

slope = (3-0)/(0-3)=3/-3=-1

f(x)=-x+b

b=3

f(x)=-x+3

5 0
2 years ago
Why ı hate this world??
Ludmilka [50]

Answer:

your young dont hate the world

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Which expression is equivalent to 4(6x + 11) - 5x?
Rudiy27

Answer:D

Step-by-step explanation:

4x TIMES 6 IS 24x MINUS 5 IS 19x

4 times 11=44

3 0
3 years ago
At a train station, freight trains depart at a rate of 2 trains every 30 minutes and passenger trains depart at a rate of 1 trai
never [62]
In my work I used t=trains and m=minutes:
30+30= 60m/2t
<span>30+30= 60m/2t
</span><span>30+30= 60m/2t
</span><span>30+30= 60m/2t
</span><span>30+30= 60m/2t
</span><span>30+30= 60m/2t
</span><span>30+30= 60m/2t
</span><span>30+30= 60m/2t
</span><span>30+30= 60m/2t
</span><span>30+30= 60m/2t
</span><span>30+30= 60m/2t
</span><span>30+30= 60m/2t
Total= 720m/24t

1:30+1:30+1:30+1:30+1:30+1:30+1:30+1:30+1:30+1:30+1:30+1:30= 4 o' clock
Total= 372m/12t

24t+12t= 36t

The answer is:
36 trains in total</span>
6 0
3 years ago
Joe and Donna are in a pie eating contest. Donna eats 11 pies in 2.5
Anni [7]
We’re is the picture
7 0
3 years ago
Read 2 more answers
Other questions:
  • A company sells furniture for home assembly. Their largest bookcase has shelves that should
    8·1 answer
  • Connor earns $1,735 each month and pays $53.10 on electricity. To the nearest tenth of a percent, what percent of Connor's earni
    7·1 answer
  • How to do it i don’t understand it
    5·1 answer
  • Let Pbe the set of polynomials. Let a, b, c and d be elements of Psuch that band dare non-zero elements of P Which of the follow
    15·1 answer
  • Which graph represents x&gt; 5?
    8·1 answer
  • A quality control engineer is interested in estimating the proportion of defective items coming off a production line. In a samp
    6·1 answer
  • In a shoe factory, 2.4% shoes made are defective. If the company made 10,000 shoes then the number of defective pieces are
    13·2 answers
  • What is the square of 8 step by step​
    10·1 answer
  • Find the value of a cube + b cube when a+b = 5 and ab = 3
    10·2 answers
  • Solve the simultaneous equation 5x-4y=10. X+2y=9
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!