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Annette [7]
2 years ago
11

Giving brainly for correct answer dont spam if you dont get right away

Mathematics
2 answers:
Elena L [17]2 years ago
8 0
-10c and -20c is the correct answer
Sauron [17]2 years ago
5 0
The answer should be -10c and -20c
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Elena receives ​$131 per year in simple interest from three investments totaling ​$3000. Part is invested at​ 3%, part at​ 4% an
ioda

Answer:

Elena invested $ 1,700 at 5%, $ 700 at 4%, and $ 600 at 3%.

Step-by-step explanation:

Given that Elena receives $ 131 per year in simple interest from three investments totaling $ 3000, and part is invested at 3%, part at 4% and part at 5%, and there is $ 1000 more invested at 5% than at 4%, to find the amount invested at each rate, the following calculations must be performed:

1500 x 0.05 + 500 x 0.04 + 1000 x 0.03 = 75 + 20 + 30 = 125

1600 x 0.05 + 600 x 0.04 + 800 x 0.03 = 80 + 24 + 24 = 128

1700 x 0.05 + 700 x 0.04 + 600 x 0.03 = 85 + 28 + 18 = 131

Therefore, Elena invested $ 1,700 at 5%, $ 700 at 4%, and $ 600 at 3%

7 0
3 years ago
What is the partial product of 2.3 x 2.6?
otez555 [7]
I’m pretty sure it’s 2.99
3 0
3 years ago
What is 68×53 pllllllzzz
Contact [7]
If my calculations are right 68 times 53 is 3,604
4 0
3 years ago
Read 2 more answers
A 35% sodium hydroxide solution is to be mixed with a 60% sodium hydroxide solution to obtain 20 liters of 40% sodium hydroxide
nydimaria [60]
0.35x + 0.60y = 0.40(x + y)   where x = vol. of 35% and y = vol. of 60%

x + y = 20

solve this system of equations

x  +  y =  20
-0.05x +0.20y = 0

this gives x = 16 and y = 4

so you need 16 L of 35% and 4 L of 60% solution.


3 0
3 years ago
Solve the system by the elimination method.
PolarNik [594]

Answer:

6x = 12

Step-by-step explanation:

2x + 3y - 10 = 0

4x - 3y - 2 = 0

add the two equations

2x + 3y - 10 = 0

4x - 3y - 2 = 0

--------------------

6x -12 = 0

add 12 to each side

6x -12 +12 = 0+12

6x =12

divide by 6

6x/6 =12/6

x =2


4 0
3 years ago
Read 2 more answers
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