Answer:
-16
Step-by-step explanation:
x^2 -1 /x+4
By putting the value of x in the expression as x = -7
= (-7)^2 - 1/ -7 +4
= (+49) - 1/ -3
= 48/-3
= -16
2x + y = -3
x - 2y = -4
2x + y = -3
2x - 4y = -8
----------------
5y = 5
y= 1
2x + y = -3
2x + (1) = -3
2x = -4
x = -2
Solution: x = -2, y = 1
23 porque ella caminó 20 Y después 3
Answer:
x = 25°
m∠B = 65°
m∠C = 50°
Step-by-step explanation:
We know that a triangle's angles will be equal to 180;
65° + (3x - 10)° + (2x)° = 180°
3x° + 2x° - 10° = 115°
5x° = 125°
x = 25°
Now we can plug our x value into the expressions for ∠B and ∠C;
[B] 3x° - 10° becomes 3(25)° - 10° = 75° - 10 = 65°
[C] 2x° becomes 2(25)° = 50°
We can also check our work;
65° + 65° = 130°
130° + 50° = 180°
Have a nice day!
I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly.
- Heather
Answer:
A is (-3,0) and (1,0).
B is (-1, -2).
Step-by-step explanation:
To find the x-intercepts, look along the x-axis and where the line goes through it. Those two locations are your answer.
To find the vertex, you can find the axis of symmetry by taking its equation and putting it into the form of x = -b/2a or finding the lowest or highest point in the line. In this example, it is (-1, -2) as the lowest point, and there is not a highest point to find, since it is in a u-shape.
