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lianna [129]
4 years ago
12

18 vocabulary words learned in 2 hours;

Mathematics
1 answer:
LiRa [457]4 years ago
4 0
Thats so not idk what to say lol
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What are the answers?​
Nataliya [291]

Answer:

20.5 , 30.4 , 5.3

Step-by-step explanation:

SOHCAHTOA

sinθ = opposite / hypotenuse

cosθ = adjacent / hypotenuse

tanθ = opposite / adjacent

10. tan64° = 42 / x ; x = 42 / tan64° ; x = 20.48476872

12. sin54° = BD / 20 ; BD = 20 * sin54° ; BD = 16.18033989 ;

     tan28° = BD / DC ; DC = BD / tan28° ; DC = 30.43079344

13. tan51° = JL / 14 ; JL = 14 * tan51° ; JL = 17.28856019 ;

     cos72° = KL / JL ; KL = JL * cos72° ; KL = 5.342458907

6 0
3 years ago
Read 2 more answers
The answer needs to be in y=mx+b or y=mx-b
galina1969 [7]
Y = -10/3x + 13

All you need to do is get the slope of the line and then find the opposite reciprocal. Then plug in the point into your equation that just has the slope in it. After that find b and write out your equation.
7 0
3 years ago
What is the solution of the equation? 8d + 2d + 6d + 9 - 6d = 0
Leni [432]

Answer:

Step-by-step explanation:

8d+2d+6d+9-6d = 0

First, combine like terms, so it would become;

10d+9 = 0

Then, separate anything without a variable;

10d = -9

Then you divide;

d= -0.9

4 0
3 years ago
Read 2 more answers
What number completes the sequence below?​
mel-nik [20]

Answer:

39

Step-by-step explanation:

7 0
4 years ago
Phyllis invested $10,500 a portion earning a simple interest rate of 9(1/5)% per year and the rest earning a rate of 9% per year
Alenkinab [10]
Total investment  = $10,500

Let x = amount of first investment, and y the amount of the second investment.

First investment:
Interest rate = 9 (1/5)% = 0.092
Earned interest = 0.092x

Second investment:
Interest rate = 9% = 0.09
Earned interest = 0.09y

Total interest after one year is $957.00, therefore
0.092x + 0.09y = 957       
 or
1.0222x + y = 10633.33   (1)

Also,
x + y = 10500               (2)

Subtract (2) from (1).
0.0222x = 133.33
x = 6000
y = 10500 - x = 4500

Answer:
The first investment is $6,000 at 9 (1/5)% rate;
The second investment is $4,500 at 9% rate.

7 0
3 years ago
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