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
DIA [1.3K]
3 years ago
11

What is the value of 'c' so that -9 and 9 are both solutions of x^2+c=103?

Mathematics
2 answers:
kotykmax [81]3 years ago
8 0

Answer:

c = 22

Step-by-step explanation:

Remark

You have to make c large enough so that when subtracted from 103, you get 81

Solution

x^2 + c = 103

x = 9

9^2 + c = 103

81 + c = 103

Subtract 81 from both sides

81 - 81 + c = 103 - 81

c = 22

- 9 does exactly the same thing.

Check

x^2 + 22 = 103

x^2 - 22 = 103 - 22

x^2 = 81

sqrt(x^2) = sqrt(81)

x = +/- 9

Gnoma [55]3 years ago
4 0

Answer:

c = 22

Step-by-step explanation:

x^2 + c = 103 so if x is either + or - 9, x^2 = 81 so...

81 + c = 103

c = 22

You might be interested in
50 POINTS !!<br><br><br> PLEASE HELP !! ILL GIVE BRAINLIEST TO THE RIGHT ANSWERS.
Vadim26 [7]

Answer:

sqrt 4^2+3^2=5

7 0
2 years ago
Read 2 more answers
A rocket travels in a trajectory given by the equation s = -4.9t 2 + v0t, where s is meters above ground, t is time in seconds a
Reptile [31]

Step-by-step explanation:

s = -4.9t² + 49t

The vertex of the parabola is at t = -b/(2a).

t = -49 / (2 × -4.9)

t = 5

The rocket reaches its maximum height after 5 seconds.

5 0
3 years ago
A box is filled with 7 brown cards, 3 yellow cards, and 8 red cards. A card is chosen at random from the box. What is the probab
Deffense [45]
7 brown, 3 yellow, 8 red...total of 18 cards

there are 15 cards not yellow and a total of 18 cards....so the probability of not picking a yellow card is : 15/18 rounds to 5/6
3 0
3 years ago
Is this equation linear: 2x+5xy-3=0
Lina20 [59]

What is linear equation?

An equation between two variables that gives a straight line when plotted on a graph.

2x + 5xy - 3 = 0

x (2 + 5y) -3 = 0

x ( 2 + 5y ) = 3

2 + 5y = 3 / x

5y = (3/x) - 2

y = ( (3/x) - 2) / 5

According to the graph i don't think it's a linear equation.

3 0
3 years ago
Find the measure of angle A
Nataly [62]

Answer:

so 2x+3x+130=180

so 5x+130=180

5x=50

so 2x =20

3x which is angle a is equal to 30 degree

4 0
2 years ago
Read 2 more answers
Other questions:
  • Can someone pls help me with this home work?
    6·1 answer
  • AREAS AND VOLUMES OF SIMILAR SOLIDS URGENT?
    13·1 answer
  • What is the initial value of the function represented by this graph
    8·1 answer
  • Can anybody help me or already know the answer to this ? :)
    11·1 answer
  • . The model below represents the equation 3x + 2 = 11.
    9·1 answer
  • HELP WILL MAKE BRAINLIEST
    13·1 answer
  • Rectangle QUAD has coordinates Q(0,0), U(0, 3), A(5, 3), and D(5,0). Q'U'A'D' is the image of QUAD after a dilation with center
    10·2 answers
  • I need help anyone! <br><br> Fill in the blank: what reason belongs in step 10?
    5·1 answer
  • Reflect the quadrilateral graph on the x axis graph <br><br>is the X-axis reflection right?​
    6·1 answer
  • A water sprinkler sends water out in a circular pattern. How many feet away from the sprinkler can it spread water if the area f
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!