Roberto invested a total of $10,000, part at 6% and part at 9%. How much did he invest in the HIGHER interest account if the total interest earned in one year was $810?

Given :

Roberto invested a total of $10,000, part at 6% and part at 9%.

To Find :

How much did he invest in the higher interest account if the total interest earned in one year was $810 .

Solution :

Let , x amount is invested in 6% interest .

Therefore , 10000-x amount is invested in 9% interest .

Now , total interest is $810 .

We know , simple interest is given by :

So ,

Solving above equation , we get :

.

Therefore , investment on higher i.e 9 % is 10000-3000 = $7000 .

Hence , this is the required solution .

answer: city needs 2.4 inches of rainfall more to match the record of 40 inches.

step-by-step explanation:

since we have given that

total annual rainfall a city record = 40 inches

this year, total rainfall recorded = 37.6 inches

number of inches of rainfall   is needed to match the record of 40 inches is given by

hence, city needs 2.4 inches of rainfall more to match the record of 40 inches.

all the angles opposite to the angle 150 would be 150 and all the angles that are next to 150 are 30 because they equal 180 it you add it up.

step-by-step explanation: