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Math Calculations using powers

   

Added on  2023-04-03

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Running head: Math 1
Math
Professor’s Name:
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Date:
Math Calculations using powers_1

MATH 2
Calculations using powers
7. Simplify the following:
a) 1012 × 102 × 1010=10( 12+210 )=104
b) 1023
1015 ×1012 =10 ( 23 (15+12 ) )=104
c) 1
105 =10 ( 0 (5 ) ) =105
d) 1014
102 ( 103 ×105 )
¿ 10 ( 14 2 ) ( 10 ( 3 + (5 ) ) )
¿ 1012 × 102
¿ 1010
e) 1016 ×1020
1012 ×102
¿ 10 (1620 )
10 (12+ 2 )
¿ 104
1014
¿ 10(414 )
¿ 1018
f) ( 105 )6
=10(5 × 6)=1030
g) 3.67 ×104 ×2.91 ×103
33× 6.89 ×1012 =3.67 × 2.91× 10 ( 4 3 )
33 ×6.89 ×1012
¿ 10.6797× 101
227.37 ×1012
¿ 0.04697 ×10 (112 )
Math Calculations using powers_2

MATH 3
¿ 0.04697 ×1011
¿ 4.697 × 1013
h) 7.98 ×108 + 4.30 ×106
¿ 7.98 ×108 +0.0430 ×108
¿ ( 7.98+0.0430 ) ×108
¿ 8.023 ×108
Rewrite these as single logarithms by applying the log laws
8. log a x +loga yloga z=loga ( xy
z )
9. log d ab+ logd bclogd ca=loga ( ab bc
ca )=log d (b¿ ¿2)=2 logd b ¿
10. log s l4 m2 +log s nlog s lmn=logs ( l4 m2 n
lmn )=logs ( l3 m )
11. log h
x
y + logh
y
z logh
z
y =logh
( x
y y
z
z
y )=logh ( x
y y
z y
z )=logh ( xy
z2 )
Firstly rewrite these as a single logarithm by applying the log laws. Then solve for x
12. log3 x2+ log3 5log3 x=log3 15
log3 x2log3 x=log3 15log3 5
log3
x2
x =log3
15
5
log3 x=+ log3 3
x=3
13. log7 x +log7 3log7 5=log7 2
Math Calculations using powers_3

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