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
inessss [21]
3 years ago
6

If x=-7 is a root of the equation x^2+kx+49=0, then k=​

Mathematics
1 answer:
aleksley [76]3 years ago
8 0

Answer:

k=14

Step-by-step explanation:

Given:

x^{2}+kx+49 = 0

x = -7

Substitution can be used to find the value of k:

(-7)^{2}+(-7)k+49 = 0

49-7k+49 = 0

98 -7k = 0

k = 14

Hope this helps :)

You might be interested in
The quadratic x? - x = 2 has two solutions. What<br> is the larger of the two solutions?
chubhunter [2.5K]
I believe the 2 is the largest
5 0
3 years ago
Boris wants to paint the ceiling of his restaurant. The ceiling is shaped in a square. Its side lengths are 52 feet. suppose eac
Licemer1 [7]
1, because when you multiply 52 and 4 (the number of sides) to get the total square feet of the ceiling, you get 208 square feet, which is exactly how much 1 can of paint will cover
3 0
3 years ago
Please help its a timed quizzzzzzzz
Finger [1]

Answer:

The answer is Yes, because the price is 3 times the number of pudding cups

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Hector took a 1 week vacation, so his next paycheck will only be 3 weeks of work. What percentage of his regular pay should he e
DerKrebs [107]
The problem says that Hector receives his regular pay when he works 4 weeks, but he <span>took a 1 week vacation. So, if in 4 weeks Hector receives the 100% of his regular pay, w</span><span>hat percentage of that pay should he expect to receive with 3 weeks of work?
</span><span>
 4 weeks-------100%
 3 weeks-------x

 We have:

 x=(3x100)/4
 x=75%

 Then, the answer is:

 Hector </span>should expect to receive the 75% of his regular pay.<span>
</span>
7 0
3 years ago
What is the equation of a parabola that has a vertical axis, passes through the point (–1, 3), and has its vertex at (3, 2)? x=
Genrish500 [490]

Answer:

y=x216–6x16+4116

Step-by-step explanation:

plato :)

5 0
3 years ago
Other questions:
  • PLEASE ANSWER THIS QUICKLY! THANK YOU!
    14·1 answer
  • What are 2 points on the graph for 6x-5y=25
    9·1 answer
  • Describe and correct the error in solving the equation -1.5+k=8.2<br>k=8.2+(-1.5)<br>k=6.7
    10·1 answer
  • |x-2|-5 &lt;-2 help!!!!!!!!!!!
    8·1 answer
  • Which word means "many legs"?
    14·2 answers
  • Help its iready ill give brainiest
    15·1 answer
  • Please help!!!!!!!!!
    12·1 answer
  • If ß is the small angle is a 3-4-5 right triangle, then sin ß = ?
    10·1 answer
  • Expand the following:<br> 5 (3x + 2)
    7·1 answer
  • Color envelopes are packed by the hundred in cardboard boxes. It takes the stationer’s five
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!