Racialize the denominator show work

Q1

I am going to use the of perfects squares. First i write the numbers is its simplest surd by rationalizing it.

Finally, i estimate the result to the nearest hundredths.

Q2

Part 1

√40 = √(4 ×10) = √4×√10 = 2√10 = 2×3.1627 = 6.32

Part 2

√75 = √(25 ×3) = √25 ×√3 = 5√3 = 5×1.732 = 8.66

Part 3

√90 = √(9×10) = √9×√10 = 3√10 = 3×3.1623 = 9.49

Part 4

√245 = √(49×5) = √49×√5 = 7√5 = 7×2.236 = 15.65

Part 5

√450 = √(225×2) = √225 × √2 = 15√2 = 15×1.414 = 21.21

Part 6

√640 = √(64×10) √64×√10 = 8√10 =8×3.162 = 25.30

Part 7

√675 = √(225×3) = √225×√3 = 15√3 = 15×1.732 = 25.98

answer: b.

step-by-step explanation:

the y coordinate for point b is 0, and answer b is the only one with that y coordinate.

if gloria has "carry over" minutes, (that is, any minutes paid for but not used in a month can be applied to her payment for minutes in the next month,) her total usage for the three months is: total minutes = 320 + 243 + 489 = 1052 minutes number of 200 minute blocks = 1052/200 = 5 r52 (that is 5 with a remainder of 52) rounding up the number of 200 minute blocks gives her usage for the three months as 6 blocks. the cost for six blocks is 6 x $25 = $150 she also has 200 - 52 or 148 carry over minutes if gloria pays each month and unused minutes are lost, applying the rounding up procedure to each month gives: first month usage of 320 minutes rounds up to 2 blocks of 200 minutes for a payment of 2 x $25 = $50 second month usage of 243 minutes rounds up to 2 blocks of 200 minutes for a payment of 2 x $25 = $50 third month usage of 489 minutes rounds up to 3 blocks of 200 minutes for a payment of 3 x $25 = $75 total payments for the three months are $50 + $50 + $75 = $175 get the plan with carry over minutes!