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Stolb23 [73]
3 years ago
5

The following observations 40, 42, 45, x-1, x +1, 51, 54, 62 are arranged in

Mathematics
1 answer:
Harlamova29_29 [7]3 years ago
4 0

Step-by-step explanation:

Here n = 8 (even number)

\therefore \:  \frac{n}{2}  =  \frac{8}{2}  = 4 \\  \\\&\:\:   \frac{n}{2}  + 1 = 4 + 1 = 5 \\  \\ hence \:  \\ median = \frac{ {4}^{th} term +  {5}^{th} term}{2}  \\  \\  \therefore \:  49 =  \frac{x - 1 + x + 1}{2}  \\  \\  \therefore \:  49 =  \frac{2x}{2} \\  \\  \therefore \:  49 = x \\  \\  \huge \purple { \boxed{\therefore \: x = 49}}

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Identify the values of the variables. Give your answers in simplest radical form. HELP ASAP!!
kumpel [21]

Answer:

B

Step-by-step explanation:

Since the triangle is right use the sine/ tangent ratios to solve for x and y

note sin60° = \frac{\sqrt{3} }{2} and tan60° = \sqrt{3}

sin60° = \frac{opposite}{hypotenuse} = \frac{3\sqrt{6} }{y}

ysin60° = 3\sqrt{6}

y × \frac{\sqrt{3} }{2} = 3\sqrt{6}

multiply both sides by 2 and divide by \sqrt{3}

y v= 6\sqrt{\frac{6}{3} } = 6\sqrt{2}

tan60° = \frac{opposite}{adjacent} = \frac{3\sqrt{6} }{x}

xtan60° = 3\sqrt{6}

x × \sqrt{3} = 3\sqrt{6}

divide both sides by \sqrt{3}

x = 3\sqrt{\frac{6}{3} } = 3\sqrt{2}


8 0
3 years ago
Read 2 more answers
TriangleA′B′C′ is the image of triangleABC after a dilation.
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Answer:

Step-by-step explanation:

The image A’B’C’ is scaled down by a factor of 1/3

7 0
3 years ago
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You just purchased two coins at a price of $670 each. Because one of the coins is more collectible, you believe that its value w
DerKrebs [107]

Answer:

The value of first coin will be $151.51 more than second coin in 15 years.

Step-by-step explanation:

You have just purchased two coins at a price of $670 each.

You believe that first coin's value will increase at a rate of 7.1% and second coin's value 6.5% per year.

We have to calculate the first coin's value after 15 years by using the formula

A=P(1+\frac{r}{100})^{n}

Where A = Future value

           P = Present value

           r = rate of interest

           n = time in years

Now we put the values

A=670(1+\frac{7.1}{100})^{15}

A=670(1+0.071)^{15}

A=670(1.071)^{15}

A = (670)(2.797964)

A = 1874.635622 ≈ $1874.64

Now we will calculate the value of second coin.

A=670(1+\frac{6.5}{100})^{15}

A=670(1+0.6.5)^{15}

A=670(1.065)^{15}

A = 670 × 2.571841

A = $1723.13

The difference of the value after 15 years = 1874.64 - 1723.13 = $151.51

The value of first coin will be $151.51 more than second coin in 15 years.

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3 years ago
Simplify −(3p53q3)−5.
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Answer: -3p^53q^3-5

Step-by-step explanation:

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Answer:

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