Can u help me pls

0.00000000000081

Step-by-step explanation:

So first what you want to do is 10 to the negative 7th power which is 0.0000001. Then you want to multiply that by 9 because of PEMDAS which is Parentheses, Exponents, Multiplication, Division, Addition, and Subtraction. After multiplying 0.0000001 by 9 you get 0.0000009. Now you multiply 0.0000009 by 0.0000009 which gives you 0.00000000000081. You multiply 0.0000009 by itself because of the small 2 in the upper right hand corner! Hope this helps! Have a great day

225x²+4=0

225x²=0-4

225x²=-4

x²=-4/225

x=±√-4/225

34.5 cm

step-by-step explanation:

generally for a circular segment of angle, θ° and radius r

arc length

= (θ/360) x circumference

= (θ/360) x 2πr

in our case, θ = 60°, π=3.142 and r = 33 cm

substitute into above formula

arc length

= (60/360) x 2(3.142)( 33) = 34.5 cm