Answer:
I also need the answer
Step-by-step explanation:
Answer:
The answer is C if im correct
Hopes it Helps!
Answer: <em>The correct options are.....</em>
<em>A)
and</em>
<em>B)
</em>
Step-by-step explanation:
Suppose, the number of e-mails Danette had in her inbox before she started reading was
.
Percentage of read emails is 80%, so the number of read emails ![= (\frac{80}{100}*X)=0.8X](https://tex.z-dn.net/?f=%3D%20%28%5Cfrac%7B80%7D%7B100%7D%2AX%29%3D0.8X)
<u>Thus, the number of unread emails</u>
, <u>which is given as</u>
.
So, the equation will be........
![X(1-0.8)=M\\ \\ \Rightarrow X=\frac{M}{1-0.8} (Answer: 1) \\ \\ \Rightarrow X=\frac{M}{0.2}\\ \\ \Rightarrow X=(\frac{1}{0.2})M=5M (Answer: 2)](https://tex.z-dn.net/?f=X%281-0.8%29%3DM%5C%5C%20%5C%5C%20%5CRightarrow%20X%3D%5Cfrac%7BM%7D%7B1-0.8%7D%20%28Answer%3A%201%29%20%5C%5C%20%5C%5C%20%5CRightarrow%20X%3D%5Cfrac%7BM%7D%7B0.2%7D%5C%5C%20%5C%5C%20%5CRightarrow%20X%3D%28%5Cfrac%7B1%7D%7B0.2%7D%29M%3D5M%20%28Answer%3A%202%29)
Thus, the expressions which could represent the number of e-mails Danette had in her inbox before she started reading are:
or ![5M](https://tex.z-dn.net/?f=5M)
Answer:
Infinite.
Step-by-step explanation:
3(x+1)-5=3x-2
3x+3-5=3x-2
3x-2=3x-2
True for any number.
Answer:
Option A, aₙ = 4 (0.5)ⁿ⁻¹
Step-by-step explanation:
We know that the common ratio (r) is: 0.5
and first term in the sequence (a₁) is: 4
and the fact this is a geometric series, therefore the sequence would be:
=> aₙ = a₁ * (r)ⁿ⁻¹
=> aₙ = 4 (0.5)ⁿ⁻¹
Hope this helps!