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3 years ago

What is the mean of the set of numbers?

Mathematics

2 answers:

raketka [301]3 years ago

8 0

Answer:

1.5

Step-by-step explanation:

I just took the test and the correct answer was 1.5

Llana [10]3 years ago

3 0

The mean of your question would be -2.5

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triangle abc is reflected over the line y=x . triangle abc has points a (10,2) , b (9,5) and c (6,4) . what is the c' coordinate

Ghella [55]

The coordinates of C are 4,6 because thats the rule for y=x

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3 years ago

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How did Katherine Johnson’s work in math affect us today?

Kamila [148]

Answer:

she made electronic calculating machines in order to calibrate rockets and make everything more precise

Step-by-step explanation:

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3 years ago

What is the value of y in the equation 4 + y = −3? 7 1 −1 −7

Natasha_Volkova [10]

Answer:

-7 is your answer

Step-by-step explanation:

Isolate the variable, y. Note the equal sign, what you do to one side, you do to the other.

4 + y = -3

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4 (-4) + y = -3 (-4)

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-7, or (D) is your answer

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4 years ago

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Can someone help me on this

fiasKO [112]

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3 years ago

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At 3pm, the length of the shadow of a thin vertical pole standing on level ground is the same as the height of the pole. A while

aliya0001 [1]

Answer: The height of the pole is 175.97 ( approx )

Step-by-step explanation:

Let the height of the pole is x cm,

Also, let the angle of elevation of the sun to the pole at 3 pm is $\theta$

Thus, by the question,

$tan\theta = \frac{\text{ The height of the pole}}{\text{ The height of the shadow}}$

$\implies tan\theta = \frac{x}{x}$ ( at 3pm the height of shadow = height of the pole)

$\implies tan\theta = 1$

$\implies \theta = 45^{\circ}$

Again, according to the question,

When the angle of elevation is $(\theta - 12^{\circ})$ ,

The height of shadow = x + 95,

$\implies tan(45-12)^{\circ}=\frac{x}{x+95}$

$\implies tan 33^{\circ}=\frac{x}{x+95}$

$\implies tan 33^{\circ}x + 95\times tan33^{\circ}=x$

$\implies tan 33^{\circ}x - x = - 95\times tan33^{\circ}$

$\implies -0.3505924068 x = - 61.6937213538$

$x=175.969930202\approx 175.97\text{ cm}$

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3 years ago