Answer:
1. 3.2 x 10^4
2. 6 x 10^4
3. 1.04 x 10^5
4. 1.82 x 10^7
5. 9.23 x 10^6
6. 4.05 x 10^5
7. 2.019 x 10^3
8. 3.02 x 10^4
Step-by-step explanation:
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Answer:
120000000000000000
Step-by-step explanation:
1.2*10^17
Answer:
r = 3.7 cm
Step-by-step explanation:
19.02 = 1/2π(2radius) + diameter
expanding:
19.02 = 1/2(3.14)(2r) + 2r
19.02 = 3.14r + 2r = 5.14r
r = 19.02/5.14 = 3.7 cm
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Answer:
9
Step-by-step explanation:
6x + 2y = 30
9x - 4y = 3
if we double the first equation and add up to second one, we cancel 4y:
- 12x+9x=60+3 ⇒ 21x=63 ⇒ x=3
now we can find y:
- 6*3+2y=30 ⇒ 2y= 30- 18 ⇒ 2y= 12 ⇒ y=6
finally, x+y