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3 years ago

Twice the sum of a number and five is negative two.

Mathematics

1 answer:

Genrish500 [490]3 years ago

8 0

Answer:

2(x+5) =-2

2x + 10 = -2

-10. -10

2x = -12

x = -6

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What is the third quartile, Q3, of the following distribution?

GREYUIT [131]

Answer:

The third quartile is:

$Q_3=29$

Step-by-step explanation:

First organize the data from lowest to highest

4, 5, 10, 12, 14, 16, 18, 20, 21, 21, 22, 22, 24, 26, 29, 29, 33, 34, 43, 44

Notice that we have a quantity of n = 20 data

Use the following formula to calculate the third quartile $Q_3$

For a set of n data organized in the form:

$x_1, x_2, x_3, ..., x_n$

The third quartile is $Q_3$ :

$Q_3=x_{\frac{3}{4}(n+1)}$

With n=20

$Q_3=x_{\frac{3}{4}(20+1)}$

$Q_3=x_{15.75}$

The third quartile is between $x_{15}=29$ and $x_{16}=29$

Then

$Q_3 =x_{15} + 0.75*(x_{16}- x_{15})$

$Q_3 =29 + 0.75*(29- 29)\\\\Q_3 =29$

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3 years ago

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Find the exact value of sec 5pi/4.

Papessa [141]

Answer:

-(sqrt2)

Step-by-step explanation:

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3 years ago

What is the equation of the line shown in this graph?

Vika [28.1K]

Answer:

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3 years ago

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