So a times 10^n where 1≤|a|<10 and n is an integer is what i learned
so
a.
234=
2.34 times 100=
2.34 times 10²
b.
0.000052=
5.2 times 1/100000=
5.2 times 10⁻⁵
c.
-220000=
-2.2 times 100000=
-2.2 times 10⁵
d. ok, so just count the spaces moved to the left
-18.2 times 10⁻¹⁵
Answer: x>-5
It is x is greater than or equal to -5
First;
-8≤2x-4
-4≤2x
-2≤x
Then;
2x-4<4
2x<8
x<4
-2≤x<4
C is the correct answer.
X- 3.5 = 5.25
X = 8.75 (Add 3.5 to both sides)
If you'd like further explaining just comment!
The product of the two segments from the two chords are equal.
4(4+5)=(x-2)(x-2+x+4) or 36=(x-2)(2x+2) or x^2-x-20=0 or (x-5)(x+4)=0
So x=5.