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faust18 [17]
3 years ago
15

Please help due at 8:00

Mathematics
2 answers:
goblinko [34]3 years ago
7 0

Answer:

x = 6

Step-by-step explanation:

Tangent - Secant Power Theorem: 18^2 = 12(21 + x)

324 = 252 + 12x

72 = 12x

x = 6

olga55 [171]3 years ago
3 0

Answer:

x=6

Step-by-step explanation:

(whole secant) x (external part) = (tangent)^2

(12+x+9)*12 = 18^2

(21+x)12 =324

Divide each side by 12

(21+x) 12/12 = 324/12

21+x = 27

Subtract 21 from each side

21+x-21 =27-21

x=6

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PtichkaEL [24]

Step-by-step explanation:

-3x+2=11

-3x=11-2

-3x=9

x=9÷(-3)

5 0
3 years ago
The sum of two numbers is 0. Twice the smaller number subtracted from 3 times the larger number is 10. Let x represent the large
Bezzdna [24]

Answer:

x+y=0 and 3x-2y=10

Step-by-step explanation

Let the numbers be x and y.

The sum of the two numbers is 0

\implies \: x + y =0

Letting the smaller number be y and the

larger number be x:

twice the smaller number

\implies \: 2y

Also, 3 times the larger number

\implies \: 3x

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\implies \: 3x - 2y = 10

Therefore the equations are

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6 0
3 years ago
What is 76.78 rounded to the nearest whole number?
galben [10]
Lets look at the number. 76.78. In each of the different place holders the number is higher than 5. Lets do some examples. 74 rounded to the nearest whole number is going to be 70. 76 rounded to the whole number will be 80. The .78 in your question also contributes. 

Answer: 80
6 0
3 years ago
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Evaluate: -8 over 9 + 4 over 9 - 2 over 9
stepan [7]
The answer is -2/3 from the solution above

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antoniya [11.8K]

Answer:

1.76

Step-by-step explanation:

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3 years ago
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