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poizon [28]
4 years ago
8

Santiago receives $143 per year in simple interest from three investments. Part is invested at 2%, part at 3%, and part at 4%. T

here is $500 more invested at 3% than at 2%. The amount invested at 4% is three times the amount invested at 3%. Find the amount of each rate
Please answer I need a lot of help on this!!!
Mathematics
1 answer:
notka56 [123]4 years ago
5 0

Answer:

02a+.03b+.04c=126,

b=a+500,

c=3b

a=300., b=800., c=2400.

Step-by-step explanation:

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Triangle J K L is shown. Angle J L K is 105 degrees. The length of J K is 4.7 and the length of J L is 2.7.
cluponka [151]

Answer:

The approximate measure of angle K is 34°

Step-by-step explanation:

In ΔJKL

∠L = 105°

JK = 4.7

JL = 2.7

Sine Rule:

\frac{SinA}{a} = \frac{SinB}{b}= \frac{SinC}{c}

So,\frac{SinL}{JK} = \frac{SinK}{JL}\\\frac{SinL}{4.7} = \frac{SinK}{2.7}\\\frac{Sin 105}{4.7} = \frac{SinK}{2.7}\\\frac{Sin 105 \times 2.7}{4.7} = SinK\\\frac{(0.9659 \times 2.7)}{4.7} = Sin K\\\frac{2.60793}{4.7} = Sin K\\0.5549 = Sin K\\Sin^{-1}(0.5549)= K\\K = 33.70

K ≈ 34°

So, Option B is true

Hence The approximate measure of angle K is 34°

5 0
3 years ago
Noah pagó $28 por los jeans después de usar el cupón. Cuál es el precio regular de el par de jeans?
eduard
It would do 40 percent or do 70
6 0
3 years ago
Fill in the gaps in the arithmetic sequence -3, _ ,_ , _, _, _ 12
lord [1]

Answer:

  -0.5, 2, 4.5, 7, 9.5

Step-by-step explanation:

The given terms are 6 apart, so the common difference is 1/6 of their difference:

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Add 2.5 to each term to get the next one. Then the sequence is ...

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8 0
4 years ago
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Orlov [11]
We determine first the real dimension of the circular fountain by using the scale factor given. 
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Thus, the area of the base of the circular fountain is approximately 452.4 ft².
6 0
3 years ago
To find the product ab of two matrices a and​ b, the number of​ _______ in matrix a must equal the number of​ _______ in matrix
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