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xxTIMURxx [149]
3 years ago
10

1. Find the value of the unknown angles in the following diagram.

Mathematics
1 answer:
kipiarov [429]3 years ago
6 0

Answer:

z= 40

y=140

x= 115

Step-by-step explanation:

look at the pics

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X^2 + x - 56 = 0<br> Solve for x
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Answer: x = 7 or x = -8

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Step-by-step explanation:

4 0
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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
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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

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

7 0
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