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tino4ka555 [31]
2 years ago
11

Use graphing to find the solutions to the system of equations.

Mathematics
1 answer:
Galina-37 [17]2 years ago
3 0
In order to utilize the graph, first you have to distinguish which graph accurately pertains to the two functions.

This can be done by rewriting the equations in the form y = mx + b which can be graphed with ease; where m is the slope and b is the y intercept.

-x^2 + y = 1
y = x^2 + 1

So this will be a basic y = x^2 parabola where the center intercepts on the y axis at (0, 1)

-x + y = 2
y = x +2

So this will be a basic y = x linear where the y intercept is on the y axis at (0, 2)

The choice which depicts these two graphs correctly is the first choice. The method to find the solutions to the system of equations by using the graph is by determining the x coordinate of the points where the two graphed equations intersect.
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I forgot how to do these, could somebody explain.<br> 30 points for both
Aleonysh [2.5K]

Answer:

11) A

12) B

Step-by-step explanation:

11) 10x² + 1 = 0

Subtract 1 from both sides:

10x² = -1

Divide both sides by 10:

x² = -1/10

Take the square root of both sides:

x = ±√(-1) / √(10)

Remember that the square root of -1 is i:

x = ±i / √(10)

To rationalize the denominator, multiply top and bottom by √10.

x = ±i√(10) / 10

Answer is A.

12) 2v² + 8v + 6 = 0

Divide both sides by 2:

v² + 4v + 3 = 0

Use AC method or quadratic formula to factor:

(v + 1) (v + 3) = 0

Set each expression to 0:

v + 1 = 0 or v + 3 = 0

Solve:

v = -1 or v = -3

Answer is B.

7 0
3 years ago
My math teacher keeps marking it wrong help...
HACTEHA [7]

Answer:

(0,0) (1,4) (2,8) (3,12)


8 0
3 years ago
Read 2 more answers
HELP PLEASE NEED AN ANSWER
Reptile [31]
B. y= -1/2x + 2

Hope that helped
5 0
3 years ago
Read 2 more answers
The measure of an angle is 8 degrees less than three times the measure another angle. If the two angels are supplementary, what
GalinKa [24]

Answer:

133°

Step-by-step explanation:

Let the measure of one angle be x, then the measure of the other angle is

3x - 8

Supplementary angles sum to 180°

Sum the 2 angles and equate to 180

x + 3x - 8 = 180

4x - 8 = 180 ( add 8 to both sides )

4x = 188 ( divide both sides by 4 )

x = 47

The larger angle = 3x - 8 = (3 × 47) - 8 = 141 - 8 = 133°

6 0
3 years ago
Read 2 more answers
(5a + a2 - 14) (10a + a2 + 39)
yan [13]
15a+a4+25 is the answer
8 0
3 years ago
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