1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
My name is Ann [436]
3 years ago
5

Mary had $25,000 to invest. She invested part of that amount at 3% annual interest and part at 5% annual interest for one year.

The amount of interest she earned for both investments was $1100. How much was invested at each rate?
Mathematics
1 answer:
emmasim [6.3K]3 years ago
3 0
(25000-f)(.03)+.05f=1100

750-.03f+.05f=1100

750+.02f=1100

.02f=350

f=$17500

So Mary invested $17500 @ 5% and 7500 at 3% to earn $1100 in interest.


You might be interested in
Select the correct answer from each drop-down menu. A self-service car wash charges $4 for the initial 5 minutes plus an additio
arlik [135]

Answer: For m\geq15

\\\Rightarrow\ y=4+0.75(m-5)\geq4+0.75(15-5)\\\Rightarrow\ y\geq4+0.75(10)\\\Rightarrow\ y\geq4+7.5\\\Rightarrow\ y\geq11.5

Nick does not has enough money to follow this recommendation.

Step-by-step explanation:

Given: A self-service car wash charges $4 for the initial 5 minutes plus an additional $0.75 for each minute after that.

Let y be the cost for car wash for m minutes then

y=4+0.75(m-5) such that at m= 5 , y=4 which is the cost for car wash (dollars) for first 5 minutes.

Also, A car enthusiast magazine recommends spending at least 15 minutes to properly wash a car.

For m\geq15

\\\Rightarrow\ y=4+0.75(m-5)\geq4+0.75(15-5)\\\Rightarrow\ y\geq4+0.75(10)\\\Rightarrow\ y\geq4+7.5\\\Rightarrow\ y\geq11.5

But Nick has $10 which is less than $11.5, so he does not has enough money to follow this recommendation.

7 0
3 years ago
Read 2 more answers
Which property allows you to write the expression (3 7i) (8 − 6i) as (8 − 6i) (3 7i)?
DanielleElmas [232]

Answer:

Commutative property

4 0
1 year ago
Evaluate.<br> 18.65 -52/11=
professor190 [17]
The answer is about 13.9927.

You would divide 52/11 and then subtract that decimal by 18.65.

18.65-4.7272=13.9927.
6 0
3 years ago
Can someone please help, ty!!<br> (Will mark brainliest)
PolarNik [594]

Answer:

Yellow is correct.

You can add the valued and divide by how many values there are to find the mean

The score of 20 is an outlier and brings the mean score down by almost 10%

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
which graph represnts a line with a slope ot -2/3 and a y-intercept equal to that of the line y=2/3x-2?
tia_tia [17]
The graph will be as shown in attached figure

4 0
3 years ago
Other questions:
  • Compare the ratios: 2/5 and 3/4
    11·2 answers
  • There are 75 balloons in each package how many balloons are in 20 packages
    12·2 answers
  • Which expression is equal to ....
    14·2 answers
  • Which statements about pentagons and hexagons are real?
    11·1 answer
  • I need help on this asap (math)
    9·2 answers
  • Can someone please help me on questions 11 and 12!!
    13·1 answer
  • The perimeter of a triangle is 44 cm.One of its sides is 4 cm smaller then the twice as big as the third side.Find the side of t
    7·1 answer
  • Please help.<br> Algebra.
    14·2 answers
  • Based on information from the periodic table, what does this image represent? HE 4 Protons e 5 Neutrons = 2 Electrons A. A negat
    5·1 answer
  • Is it Substitution or linear combination?​
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!