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3 years ago

Pleaseee helppppppp!!!!!!

Mathematics

2 answers:

tigry1 [53]3 years ago

7 0

Its neither

hope this helps

Softa [21]3 years ago

6 0

Neither because they dont have the same x points so they cant be vertical and they dont have the same y points so it cant be horizontal

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Is this 40%? If not, what's the answer? Thanks!

djverab [1.8K]

Answer:

It is!

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8 0

2 years ago

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The perimeter of equilateral triangle ABC is 81/3 centimeters, find the length of the radius and apothem.

MAXImum [283]

There is a typo error, the perimeter of equilateral triangle ABC is 81/√3 centimeters.

Answer:

Radius = OB= 27 cm

Apothem = 13.5 cm

A diagram is attached for reference.

Step-by-step explanation:

Given,

The perimeter of equilateral triangle ABC is 81/√3 centimeters.

Substituting this in the formula of perimeter of equilateral triangle = $3\times\ side$

$3\times\ side$ $=[tex]81\sqrt{3}$

$Side = \frac{81\sqrt{3} }{3} =27\sqrt{3} \ cm$

Thus from the diagram , Side $AB=BC=AC= 27\sqrt{3} \ cm$

We know each angle of an equilateral triangle is 60°.

From the diagram, OB is an angle bisector.

Thus $\angle OBC = 30$ °

Apothem is the line segment from the mid point of any side to the center the equilateral triangle.

Therefore considering ΔOBE, and applying tan function.

$tan\theta =\frac{perpendicular}{base} \\tan\theta=\frac{OE}{BE} \\tan\theta=\frac{OE}{\frac{27\sqrt{3}}{2} } \\tan30\times {\frac{27\sqrt{3} }{2} }= OE\\\frac{1}{\sqrt{3} } \times\frac{27\sqrt{3} }{2} =OE\\$

Thus ,apothem OE= 13.5 cm

Now for radius,

We consider ΔOBE

$cos\theta=\frac{base}{hypotenuse} \\cos30= \frac{BE}{OB} \\Cos30 = \frac{\frac{27\sqrt{3} }{2}}{OB} \\OB= \frac{\frac{27\sqrt{3} }{2}}{cos30} \\OB= \frac{\frac{27\sqrt{3} }{2}}{\frac{\sqrt{3} }{2} } \\OB =27 \ cm$

Thus for

Perimeter of equilateral triangle ABC is 81/√3 centimeters,

The radius of equilateral triangle ABC is 27 cm

The apothem of equilateral triangle ABC is 13.5 cm

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3 years ago

The graph shows a scuba diver's ascent over time. Use the graph to find the slope of the line. Complete the description of what

Burka [1]

Answer:

The slope of the line is .25 This indicates that the diver ascends at a rate of .25 m/s.

Step-by-step explanation:

0 - (-10)

------------ == 10/40 == .25

40 - 0

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3 years ago

Brian irons 2/9 of his his shirt in 3 3/5 Brian irons at a constant rate at this rate hou much of his shirt is ironed each minut

VashaNatasha [74]

(2/9 shirt)/(3 3/5 minute)
= (2/9)/(18/5) shirt/minute
= (2/9)*(5/18) shirt/minute
= 5/81 shirt/minute

5/81 of Brian's shirt is ironed each minute

_____
It will take Brian 16 1/5 minutes to iron his shirt.

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3 years ago

1/2 (x - 10) = 7 what does x =

Vika [28.1K]

X=24

Work: x-10=14 x=14+10

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3 years ago

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