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Alchen [17]
3 years ago
12

63 decreased by twice Vidya's height

Mathematics
1 answer:
galben [10]3 years ago
4 0
Vidya's height=x
because decreased means subtraction (-) and twice means times 2
it should be 63-2x
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Im pretty sure its 4,771 but id double check with a calculator

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3 years ago
Hiya !
Aleksandr [31]

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Step-by-step explanation:

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2 years ago
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Define a function f on a set of real numbers as follows: f(x) = 3x − 1 x , for each real number x ≠ 0 Prove that f is one-to-one
dalvyx [7]

Answer with Step-by-step explanation:

We are given that

f(x)=\frac{3x-1}{x}

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Proof:Let x_1 and x_2 be any nonzero real numbers such that

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By using the definition of f to rewrite the left hand side of this equation

f(x_1)=\frac{3x_1-1}{x_1}

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f(x_2)=\frac{3x_2-1}{x_2}

Equating the expression then we get

\frac{3x_1-1}{x_1}=\frac{3x_2-1}{x_2}

3x_1x_2-x_2=3x_2x_1-x_1

3x_1x_2-3x_1x_2+x_1=x_2

x_1=x_2

Therefore, f is one-to-one.

6 0
3 years ago
The confidence interval is reported as follows: Lower 95% CI < p < Upper 95% CI For this question you will be calculating
monitta

Answer:

lower 95% Cl is 0.292

Step-by-step explanation:

p^ = 0.4783

n = 23

for 95% Cl,

z = 1.9600

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LCL = 0.292

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7 0
3 years ago
How to do the problem
ruslelena [56]

Answer:

1.) x = 14.96ft

2.) The shorter leg is 6 meters

Step-by-step explanation:

1.) a^2 + b^2 = c^2

  • a and b = legs of the triangle
  • c = hypotenuse the longest side

15ft^2 + x^2 = (2x +1)^2

  • 225 + x^2 = (2x^2 + 1^2)
  • 225 = 2x^2 + 1 - x^2
  • 225 = x^2 + 1
  • 225 - 1 = x^2 +1 - 1
  • √224 = √x^2
  • x = 14.9662...

2.) Longer leg a = x+2,  shorter leg b = x, Hyp. c= 2x-2

Equation:

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Solve:

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  • 2x^2 + 4x + 4 - 4x^2 +8x - 4 = 4x^2 - 4x^2 - 8x + 8x + 4 - 4
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Answers:

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<u>Since x cannot equal 0 due to the known length of the triangle needs to be more than 0 the answer for x equals 0.</u>

<u>B=6</u>

Check:

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8^2 + 6^2 = 10^2

  • 64 + 36 = 100
  • 100= 100
5 0
3 years ago
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