Answer:
x = -2 ± 452i
Step-by-step explanation:
x² + 4x = 117
x² + 4x - 117 = 0
if you solve this quadratic by using the quadratic formula you get:
x = -2 ± 452i
452i is an imaginary number that equals 
Add the two equations:
2x + 4y = 16
-2x - 3y = -6
2x + -2x = 0
4y -3y = y
16-6 = 10
When you add the equations you get y = 10
Now you have a value for y, use the first equation to solve for x:
2x + 4(10) = 16
2x + 40 = 16
Subtract 40 from both sides:
2x = -24
Divide both sides by 2
X = -12
Answer: x = -12 and y = 10
Answer:
129
Step-by-step explanation:
278 - 149 = 129
Answer:
is there a graph?
Step-by-step explanation:
<span> Measure the radius </span>Calculate the diameter Measure the distance from the center of the circle to the circumference. This is the radius of the circle. <span> Calculate the circumference</span> Multiply the radius of the circle in question by two to get the diameter. Multiply
pi by the diameter to get the circumference of the circle. For
instance, if the diameter of the circle is 20 centimeters, the
circumference of the same circle is the product of 20 centimeters and
3.14, which is 62.8 centimeters.
if u need more information u can watch this as well:<span>https://www.youtube.com/watch?v=vSXKLH0Gpbw
</span> i hoped i helped u out! =^-^=
