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xenn [34]
4 years ago
8

Helppppppp mathhhhhhhhh

Mathematics
1 answer:
tamaranim1 [39]4 years ago
5 0
Cosα=adjacent/hypotenuse

In this case you have:

cosα=FE/DF

DF=FE/cosα, we are told that FE=13 and α=34 so

DF=13/cos34

DF≈15.68 which is

DF≈15.7 (to nearest tenth)
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Which is the most accurate description of the polygon?
kherson [118]
Let’s take a look at the definitions of all of these categories of polygon:

A rhombus is a quadrilateral with four equal-length sides

A trapezoid is a quadrilateral with at least one pair of parallel sides

A kite is a quadrilateral with two pairs of equal sides, where those sides are adjacent to each other

A quadrilateral is a four-sided polygon

And let’s compare our definitions with the figure:

- None of the sides of the figure are equal to each other, so we it can’t be a rhombus
- The slopes of all of the sides are different, so the figure can’t have a pair of parallel lines, ruling out the chance that it’s a trapezoid
- That first bullet point also rules out the possibility that our figure is a kite
- Our figure *is* a four-sided polygon though, so it meets the requirements for a quadrilateral

So, the only label that works for this figure is a *quadrilateral*.
8 0
4 years ago
What is the best approximation of the circumference of a circular pizza pie whose radius is 6 inches?
charle [14.2K]

37.7in i may be wrong but this should help you

6 0
4 years ago
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A pyramid has a square base with sides of length s. The height of the pyramid is equal to 1/2 of the length of a side on the bas
ELEN [110]

Answer:

V = (s^3)/6  (Answer B )

Step-by-step explanation:

If the length of a side of the base is s, then the height of the pyramid is half that, or s/2.

The volume of a pyramid with a square base and base side length S and height H is V = (1/3)(S^2)(H).

In this case, the formula is V = (1/3)(s^2)(s/2), or V = (s^3)/6  (Answer B)

6 0
2 years ago
Sketch the quadratic function ƒ(x) with a vertex at (2, 8) and the points (0, 4) and (4, 4). Which statement describes the graph
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Step-by-step explanation:

0, 4) and (4, 4). Which statement describes the graph of the parabola? A) decreasing when x < 0 B) decreasing when x > 2 C) decreasing when x < 2.....

6 0
3 years ago
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AfilCa [17]

Answer:

68% of the sample can be expected to fall between 28 and 32 cm

Step-by-step explanation:

The Empirical Rule states that, for a normally distributed random variable:

68% of the measures are within 1 standard deviation of the mean.

95% of the measures are within 2 standard deviation of the mean.

99.7% of the measures are within 3 standard deviations of the mean.

In this problem, we have that:

Mean = 30

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By the Empirical Rule, 68% of the sample can be expected to fall between 28 and 32 cm

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