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
BARSIC [14]
3 years ago
7

If x=3 is a solution of the equation x^2+kx+15=0, find the value of k. Hence find the other solution of the equation

Mathematics
1 answer:
eimsori [14]3 years ago
3 0
X^2 + kx + 15 = 0
3^2 + 3k + 15 = 0
9 + 3k + 15 = 0
24 + 3k = 0
3k = -24
k = -24/ 3
k = -8
You might be interested in
Is V <br> 5 rational or irrational
madreJ [45]

Answer:

it's a whole number

Step-by-step explanation:

it's a whole number

4 0
2 years ago
The Fernandez family drove 273 miles in 5.25 hours. How far would they have driven at that rate in 4 hours?
Vaselesa [24]
The Fernandez family would have driven 208 miles in a rate of 4 hours. 
4 0
3 years ago
P=R-C<br><br> Solve the formula for C
Anit [1.1K]
P = R - C

R - C = P

- C = P - R

Multiply both sides by - 1

-C*-1 =   -1*(P - R)

C = -P + R

C = R - P
 
4 0
3 years ago
A spherical water tank holds 7,500 ft3 of water. What is the diameter of the​ tank?
Alisiya [41]

Answer: 2r=d

d=24.28590063

Step-by-step explanation:

vsphere=4/3pir^3

7500=4/3pir^3

times both sides by 3

22500=4pir^3

divide both sides by 4

5625=pir^3

divide bot sides by pi

1790.4931=r^3

cube root both sides

12.142950=r

2r=d

d=24.28590063 ft

4 0
2 years ago
The roster form of The set of odd natural numbers greater than or equal to 5 and less than or equal to 11 .
Lunna [17]

Answer:

{5, 7, 9, 11}

Step-by-step explanation:

Roster form just means list the elements of the set in the brackets.

It says the elements are greater than or equal to five and less than or equal to 11. So we start at 5 and end at 11.

We list {5, 7, 9, 11} because these elements follow the rule that they must be odd natural numbers. Natural numbers are the numbers you can count starting from 0 like {0, 1, 2, 3, ...}.

4 0
3 years ago
Other questions:
  • Javier power walks 4 1/4 miles in 2 hours how many miles does he walk in one hour? ANSWER HAS TO BE IMPROPER AND IN SIMPLEST FOR
    12·1 answer
  • 62 less than twice victors score
    10·2 answers
  • Does anyone know how to do this?
    12·1 answer
  • Which of these cannot represent the lengths of the sides of a right triangle A.3ft, 4ft, 5ft B.6in, 8in, 10in C.16cm, 63cm, 65cm
    11·1 answer
  • Someone please help me with this question please
    9·1 answer
  • Car #1 travels 105 miles in 5 hours. Car #2 travels 252 miles in 3
    11·1 answer
  • What is the value of x? <br>6 (-3 -x) - 2x = 14​
    5·2 answers
  • Complement of 63 degrees?
    5·1 answer
  • A researcher conducted a hypothesis test to see if students on average spend more than 1 hour per homework assignment. The level
    14·1 answer
  • 19 of 22
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!