Answer:
Step-by-step explanation:
(2+5xi)(7-xi)=2(7-xi)+5xi(7-xi)
=14-2xi+35xi-5x²i²
=14+33xi-5x²(-1)
=14+33xi+5x²
=14+5x²+33xi
Answer:
k=2
Step-by-step explanation:
7[k+8]=70
First distribute the 7 into the k+8
7k+56=70
Then subtract the 56 on both sides since we want to isolate the variable
7k=14
Lastly divide each side by 7 to get the variable by itself and its value
k=2
We can check this by plugging 2 into the equation. We substitute for 2 in place of k.
7[2+8]=70
First do inside the brackets
7[10]=70
Next multiply
70=70
The equation is true so we know for sure that 2=k
Answer:
None, there are no degrees/exponents
Step-by-step explanation:
Hope this is helpful :)
The given polygon isa pentagon and the sum of its exterior angle is 360°. The value of x from the given polygon is 8
<h3>Sum of the exterior angle of a polygon</h3>
The given polygon isa pentagon and the sum of its exterior angle is 360°.
Take the sum of the angles and equate to 360° as shown;
77 + 66 + 62+ 59 + 12x = 360°
264 + 12x = 360
12x = 96
x = 8
Hence the value of x from the given polygon is 8
Learn more on exterior angles here: brainly.com/question/2546141
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