complete the table by estimating and writing each number as a single digit times a power of ten.

4. * 10^-9
4. * 10^10
6. * 10^7
4. * 10^-8
All rounded to the nearest whole number. Take the number given and move the decimal point to make the number less that 10 but greater than 1. The, count how many spaces you moved the decimal point, this will be the power of 10. If you moved the decimal point to the left, the power of 10 will be positive. If you moved it to the right, the power of 10 will be negative. Hope this helped!

Intersecting secant-tangent theorem states that if a tangent segment and a secant segment are drawn to a circle from an exterior point, then the square of the measure of the tangent segment is equal to the product of the measures of the secant segment and its external secant segment.so to break it down: 1. pq acts as the tangent and ps as the secant with an intersection at p.sr = 21rp = 3x + 3pq = 4x + 4following to equation: tangent squared = the two segments multiplied by each otherso (4x + 4) ^ 2 = (3x + 3) • (21) simplifies to 16x^2 - 31x - 47 = 0 or (16x - 47)(x + 1) x = -1 or x = 47/162. pq acts as the tangent and ps as the secant with an intersection at p (again! )sr = 16rp = xpq = 15(15) ^ 2 = 16 • x225 = 16xx = 225/163. the interesting chords are proportional to each other so a ratio is possible to set up: ap dp 10 3 + x = = —— = pc pb 8 xcross multiple to get 10x = (3 + x)(8)x = 12

I'm gonna have to say about 13 percent