Answer:
first term a=4
Step-by-step explanation:
Sum of the first 6 terms S6 = 15624
common ratio r= 5
n= 6
first term a=?
Formula: S6= a(r^n-1)/r-1
15624 = a( 5^6-1)/5-1
15624 = a(15625-1)/4
15624= a( 15624)÷4
15624= 15624a÷4
Cross multiply
15624×4 = 15624a
62496 = 15624a
divide both sides by 15624
62496÷15624 = 15624a÷15624
4 = a
a= 4
Answer:
so first you do the work than check
Step-by-step explanation:
You can’t? I mean like adding 100 at a time or-
Use the app photomath from appstore
it really helped me alot
<span> 16501
(10^23) • 16501/5000
</span><span> 2.1 10 = 2•5
</span>
<span>(10)^23 = (2•5)^23 = 2^23 • 5^23</span>
<span> 16501
(2^23•5^23) • 16501/5000
</span>
