can you please help me I will mark you brainlist answer
Answers
Answer:
Yes shore
in 2nd one b one
Step-by-step explanation:
the answer is 4
because there's all the
numbers exept 4
in place of 4 there is n
so that n=4
Step-by-step explanation:
1)
a) 3^10*5^3/(3^3)^3*5
=3^10*5^3/3^9*5
=3^(10-9)*5^3-1
=3*5^2=25*3=75
b) 7^2*t^6*7^2/(2*7)^3*t^2
=7^(2+2-3)*t^(6-2)/2^3
=7*t^4/2^3=7t^4/8
c). 7^5*(5*2)^7*5^2/(2*7)^5*5^9
7^5*5^9*2^7/2^5*7^5*5^9
=7^(5-5)*5^(9-9)*2^(7-5)
=4
2)
(3/7)^2*6=(3/7)^(n+6)
comparing powers
12=n+6
n=6
b)
comparing powers
2n=2*4=8
n=4
c)
7^(2*(n-1))+6=7^2n-1
7^2n-2+6=7^2n-1
6=7^2n(7^-1-7^-2)
6=7^2n(1/7-1/49)
6=7^2n(6/49)
49=7^2n
7^2=7^2n
comparing powers
2=2n
n=1
d)
2^2n*2^2*2^n-2^3n/2^15*3^2=1/2^3*3
=2^3n+2-2^3n=2^15*3^2/2^3*3
=2^3n(4-1)=2^12*3
=2^3n*3=2^12*3
=2^3n=2^12
comparing powers
3n=12
n=4