So the answer is 4 I’m right u wrong ok I’m tell the truth trust me I got 5 hearts this morning
Answer:
C. 79%
Step-by-step explanation:
The probability of the pebble inside the circle will depend on the area of the circle. I assume that the circle is inside the square surface and has the diameter(d) the same as the square side(s). If the radius equal to half diameter, the area for the circle will be:
circle area = pi * r * r
circle area= 3.14 * (0.5d) * (0.5d)
circle area=0.785 d^2= 0.785 s^2
The total area where the stone can land is equal to the square area. The area of the square is:
square area= side * side= s^2
Then the chance for the pebble land on the circle is:
circle area/ square area= 0.785 s^2 / s^2= 0.785= 79%
1.)
=(x-8i)(x+8i)
x^2+8ix-8ix-64i^2
x^2-64i^2
x^2-64(-1)
x^2+64
2.)
=(4x-7i)(4x+7i)
16x^2+28ix-28ix-49i^2
16x^2-49i^2
16x^2-49(-1)
16x^2+49
3.)
=(x+9i)(x+9i)
x^2+9ix+9ix+81i^2
x^2+18ix+81(-1)
x^2+18ix-81
4.)
=(x-2i)(x-2i)
x^2-2ix-2ix+4i^2
x^2-4ix+4(-1)
x^2-4ix-4
5.)
=[x+(3+5i)]^2
(x+5i+3)^2
(x+5i+3)(x+5i+3)
x^2+5ix+3x+5ix+25i^2+15i+3x+15i+9
x^2+6x+10ix+30i+25i^2+9
x^2+6x+10ix+30i+25(-1)+9
x^2+6x+10ix+30i-25+9
x^2+6x+10ix+30i-16
Hope this helps :)
Answer:
-3x - 1
Step-by-step explanation:
(6x + 2)-(9x + 3)
We Begin by opening the brackets.
6x + 2 -9x - 3
Please note the change in the signs.
6x - 9x + 2 - 3
-3x - 1