Answer:
Nico invest $2500 at 9% interest rate and $800 at 4% interest rate.
Explanation:
He invests some money at 9%, and $1700 less than that amount at 4 %.
Let Nico invest $x at 9%.
It means he invest $( x-1700) at 4%.
The investments produced a total of $257 interest in 1 yr.




Add 68 on both sides.


Divide both sides by 0.13.

Nico invest $2500 at 9% interest rate.

Nico invest $800 at 4% interest rate.
Therefore Nico invest $2500 at 9% interest rate and $800 at 4% interest rate.
✧・゚: *✧・゚:* *:・゚✧*:・゚✧
Hello!
✧・゚: *✧・゚:* *:・゚✧*:・゚✧
❖ The cover letter should c. introduce you to an employer.
~ ʜᴏᴘᴇ ᴛʜɪꜱ ʜᴇʟᴘꜱ! :) ♡
~ ᴄʟᴏᴜᴛᴀɴꜱᴡᴇʀꜱ
The estimators are the blocks in this study
Explanation:
An estimator is a law in statistics for estimating a calculation based on observed figures for a given amount, thereby differentiating the definition, the quantity of value and its consequence. There are estimators for point and time.
To order to measure the time, energy, equipment and function necessary to produce a commodity, constructing a building or provide a service, cost estimators must gather and analyse data. They typically work on a particular company or industry.
It can either be finite-dimensional (parametric and semi-parametric) or infinite-sized (semi-parametric / non-parametric).