Question

what is special about a radioactive cat? choose the correct answer for each exercise and circle the letter pair next to it. write the uppercase letter in the box containing the lowercase letter. in exercises 1 - 2, choose the number that is written in scientific notation. 1. r·y 34.5×10^5 m·e 3.45×10^6 y·p 0.345×10^7 2. b·g 0.77×10^(-3) i·r 7.7 + 10^(-4) s·l 7.7×10^(-4) in exercises 3 - 6, find the value of n. 3. 94,000,000 = 9.4×10^n n·o 8 e·a 7 4. 555,500,000,000 = 5.555×10^n i·i 11 k·c 10 5. 0.00006 = 6×10^n w·s -4 j·g -11 6. 0.0000000000375 = 3.75×10^n f·u -12 y·e -5 in exercises 7 - 12, write the number in decimal form. 7. 3.8×10^5 r·a 38,000,000 p·r 0.00038 8. 3.8×10^(-5) d·l 3,800,000 w·i 380,000 9. 3.80×10^7 b·t 0.000038 o·d 38,000 10. 6.25×10^4 a·a 0.000000625 n·e 62,500 11. 6.25×10^(-3) v·m 625,000 k·h 0.000000625 12. 6.25×10^(-8) z·s 0.00625 h·l 0.00062 in exercises 13 - 18, write the number in scientific notation. 13. 72,000 q·f 7.2×10^10 q·w 7.2×10^5 14. 7,200,000,000,000 f·s 7.2×10^12 o·n 7.2×10^(-7) 15. 0.00000072 a·i 7.2×10^4 t·d 7.2×10^(-6) 16. 41,900,000 v·l 4.19×10^(-3) x·t 4.19×10^(-5) 17. 0.00419 l·r 4.19×10^(-10) d·h 4.19×10^7 18. 0.0000000000419 c·s 4.19×10^6 h·e 4.19×10^(-11) in exercises 19 - 22, write the number in scientific notation. 19. 22.2×10^3 p·o 2.22×10^5 l·t 2.22×10^7 20. 0.222×10^8 t·f 2.22×10^4 c·s 2.22×10^9 21. 0.54×10^(-4) g·l 5.4×10^(-6) u·p 5.4×10^(-16) 22. 54×10^(-15) q·h 5.4×10^(-14) x·v 5.4×10^(-5)

Explanation:

Step1: Recall scientific - notation rules

Scientific notation is of the form $a\times10^{n}$, where $1\leq|a|\lt10$ and $n$ is an integer.

Step2: Solve Exercise 1

For $34.5\times10^{5}$, $a = 34.5\geq10$; for $3.45\times10^{6}$, it is in correct scientific - notation; for $0.345\times10^{7}$, $a=0.345\lt1$. So the answer is m·E.

Step3: Solve Exercise 2

For $0.77\times10^{-3}$, $a = 0.77\lt1$; for $7.7 + 10^{-4}$ is not in scientific - notation form; for $7.7\times10^{-4}$, it is in correct scientific - notation. So the answer is s·L.

Step4: Solve Exercise 3

$94000000=9.4\times10^{7}$, so $n = 7$, the answer is e·A.

Step5: Solve Exercise 4

$555500000000=5.555\times10^{11}$, so $n = 11$, the answer is i·I.

Step6: Solve Exercise 5

$0.00006 = 6\times10^{-5}$, so $n=-5$, the answer is y·E.

Step7: Solve Exercise 6

$0.0000000000375=3.75\times10^{-12}$, so $n=-12$, the answer is f·U.

Step8: Solve Exercise 7

$3.8\times10^{5}=380000$, no correct option provided seems to be an error in the problem setup.

Step9: Solve Exercise 8

$3.8\times10^{-5}=0.000038$, the answer is p·R.

Step10: Solve Exercise 9

$3.80\times10^{7}=38000000$, no correct option provided seems to be an error in the problem setup.

Step11: Solve Exercise 10

$6.25\times10^{4}=62500$, the answer is n·E.

Step12: Solve Exercise 11

$6.25\times10^{-3}=0.00625$, no correct option provided seems to be an error in the problem setup.

Step13: Solve Exercise 12

$6.25\times10^{-8}=0.0000000625$, no correct option provided seems to be an error in the problem setup.

Step14: Solve Exercise 13

$72000 = 7.2\times10^{4}$, no correct option provided seems to be an error in the problem setup.

Step15: Solve Exercise 14

$7200000000000=7.2\times10^{12}$, the answer is f·S.

Step16: Solve Exercise 15

$0.00000072=7.2\times10^{-7}$, the answer is o·N.

Step17: Solve Exercise 16

$41900000 = 4.19\times10^{7}$, no correct option provided seems to be an error in the problem setup.

Step18: Solve Exercise 17

$0.00419=4.19\times10^{-3}$, no correct option provided seems to be an error in the problem setup.

Step19: Solve Exercise 18

$0.0000000000419=4.19\times10^{-11}$, the answer is h·E.

Step20: Solve Exercise 19

$22.2\times10^{3}=2.22\times10^{4}$, no correct option provided seems to be an error in the problem setup.

Step21: Solve Exercise 20

$0.222\times10^{8}=2.22\times10^{7}$, no correct option provided seems to be an error in the problem setup.

Step22: Solve Exercise 21

$0.54\times10^{-4}=5.4\times10^{-6}$, the answer is g·L.

Step23: Solve Exercise 22

$54\times10^{-15}=5.4\times10^{-14}$, the answer is q·H.

Answer:

1. m·E
2. s·L
3. e·A
4. i·I
5. y·E
6. f·U
7. (No correct option)
8. p·R
9. (No correct option)
10. n·E
11. (No correct option)
12. (No correct option)
13. (No correct option)
14. f·S
15. o·N
16. (No correct option)
17. (No correct option)
18. h·E
19. (No correct option)
20. (No correct option)
21. g·L
22. q·H