Carson walked 6 1/2 mi in 2 h. How long will it take him to walk 16 1/4 mi at the same speed? [ ] h
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Help a gurl out, my fellow Brainy's?What is the quotient written in scientific notation? 2x10^21 over 8x10^3
A.2.5x10^6
B. 0.25x10^18
C.2.5x10^17
D.0.25x10^7
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so (2 times 10^21)/(8 times 10^3) using the associative property exg xy/zt=y/z times x/t so
(2 times 10^21)/(8 times 10^3)=2/8 times (10^21)/(10^3) 2/8=1/4=0.25
when dividing exponents, just subtract the bottom number from the top number exg 10^21/10^3=10^(21-3)=10^18
so the answer is 0.25 times 10^18, but
scientific notation is (a number >1 and <10) times 10^x
so 0.25 times 10=2.5 and 2.5>1 and <10 so this should work
0.25 times 10^18=2.5 times 10^17 ( we just took the ten from the 18)
so the answer is 2.5 times 10^17 or C
The diameter of a circle is 16 feet.What is the radius of the circle?
4 ft
8 ft
48 ft
32 ft
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thecradius is 8 feet
Divide 33 photos into two groups so the ratio is 4 to 7.
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4:7....4 + 7 = 11
(4/11)(33) = 132/11 = 12 <== group 1 (7/11)(33) = 231/11 = 21 <== group 2
4/7 = 12/21
PLEASE HELP! How do you count (a+2) (b+1) ??
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john had a ribbon that was 1 1/2 meters long. he used 2 pieces that were each 1/3 of that length. how much ribbon did john use
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Of means multiplication. So the question is 1/3 X 1 1/2. First make 1 1/2 improper: 3/2. Then multiply the numerators (top numbers) and denominaters (bottom numbers): 1x3=3, 3x2=6, =3/6. Now simplify 3/6=1/2. Then multiply that by 2, since he used 2 pieces: 1/2x2=1. John used 1 meter :)