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
Dima020 [189]
3 years ago
15

Q8 Q21.) Find the amount invested at each rate.

Mathematics
2 answers:
Pavlova-9 [17]3 years ago
5 0
See the attached picture:

6% = 1200
9% = 2400
12% = 3800

nignag [31]3 years ago
4 0
Let x, y, z be the amount at 6%, 9% n 12%

x+y+z = 7400
z-x-y = 200
2z = 7400+200 = 7600
z = 3800

@12%, 3800 gives 3800*0.12=456 income
0.06x+0.09y+456=744
0.06x+0.09y=288
6x+9y=28800

x+y+3800=7400
y=3600-x

6x+9(3600-x)=28800
9x-6x=9*3600-28800=3600
x=1200

y=3600-1200
=2400



You might be interested in
What is the system of solution to y-x=-13 and -4x+3y=-51
poizon [28]
Equation 1 ==> y - x = -13
Equation 2 ==> -4x + 3y = -51
3(y - x) = 3(-13)
Equation 3 ==> 3y - 3x = -39

Equation 2 - 3
= (3y - 3y) + ( -4x - (-3x) ) = -51 - (-39)
-x = -12
x = 12

Substitude x into equation 1
y - 12 = -13
y = -1
8 0
4 years ago
Mariah spent $9.50 on 9 pounds of limes and pears. Limes cost $0.50 per pound and pears cost $1.50 per pound. Let l be the numbe
Mashcka [7]

Answer:

4 pounds of lime and 5 pounds of pears

Step-by-step explanation:

I + P = 9

0.5l + 1.5P = 9.5

I = 9 - P

0.5(9 - P) + 1.5P = 9.5

4.5-0.5P + 1.5P = 9.5

4.5 + P (1P) = 9.5

P = 9.5-4.5 = 5

I = 9 - 5 = 4

Answer: 4 pounds of lime and 5 pounds of pears

5 0
3 years ago
4 to 7 equals 21 to what ​
Margaret [11]
Can you show the whole question
8 0
3 years ago
Read 2 more answers
Please help me out!​
melisa1 [442]

Answer:

don't under stand your question please

7 0
3 years ago
Which of the following inverse functions are defined for x=-1/2? Select all thst apply.
daser333 [38]
All but the last one I think but don't quote me
4 0
3 years ago
Read 2 more answers
Other questions:
  • A rock climber climbs at a rate of 720 feet per hour. Write and solve an equation to find the number of minutes m it takes for t
    15·1 answer
  • 3. If there are eighty-eight students hanging
    6·2 answers
  • 4x+2y=10 <br> X-y=13 <br> Write in (x,y)
    6·1 answer
  • Rewrite the given equation so there is a single power of 5,000 on each side. Then, set the exponents equal to each other. Which
    15·1 answer
  • What does combining like terms refers to?
    8·1 answer
  • Lori rented a car for one day. The daily rental rate was $12.50 plus 25 cents per mile. The total cost of her rental was $46. Ho
    8·1 answer
  • What is the slope of the line with equation y = -7x?
    8·2 answers
  • A thermos in the shape of a cylinder is filled with coffee. The height of the cylinder is 12 inches and its radius is 2 inches.
    13·2 answers
  • Please helpppppppppp i will mark brainlist
    13·2 answers
  • I will give many points and brainlest if you find the area of the polygon
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!