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Delvig [45]
3 years ago
5

PLEASE HELP!! WHAT IS x???

Mathematics
1 answer:
Vitek1552 [10]3 years ago
8 0

9514 1404 393

Answer:

  x = 90 degrees

Step-by-step explanation:

There are several ways to go about this (as is often the case with math problems). Here, we'll use the fact that an inscribed angle is half the measure of the arc it intercepts.

  arc DE = 2×∠DFE = 60°

  arc EF = 2×∠ECF = 60°

  arc CF = 2×∠CEF = 60°

Then arc DEC is ...

  arc DEC = arc DE +arc EF +arc FC = 60° +60° +60° = 180°

Angle DBC is half the measure of this arc, so is ...

  ∠DBC = 180°/2 = 90° = x

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A mountain climber descends a cliff at a rate of 2.5 ft/second. Write an equation modeling the change in elevation (variable = c
Ahat [919]

The equation which represents the change in elevation of the mountain climber as he descends the cliff is; c = -2.5s.

<h3>What is the change in elevation c of the climber in terms of seconds?</h3>

It follows from the task content that the change in elevation of the climber is to.be represented by c and since the rate of descending the cliff is given as; 2.5 ft/second.

Therefore, the required equation is; c = -2.5s.

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2 years ago
Draw a square with one vertex on the origin (-3, 5) and a perimeter of 20.
vampirchik [111]

Answer:

Coordinates:

(-3, 5)

(2, 5)

(-3, 10)

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Step-by-step explanation:

Perimeter formula:

length + width + length + width

Insert known value(s):

l + w + l + w = 20

Squares must have the same value for all 4 sides, so what number × 4 will equal 20? 5.

5 + 5 + 5 + 5 = 20

This means coordinates will be 5 units apart:

(-3 + 5, 5) = (2, 5)

(-3, 5 + 5) = (-3, 10)

Mark these coordinates on your grid as you go to double check the shape turns becomes a square:

(2, 5 + 5) = (2, 10)

Counting between them should equal 5 units for each side: I checked using the desmos graphing calculator online.

5 0
3 years ago
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Zielflug [23.3K]
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7 0
3 years ago
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The equation of this circle is -
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Hello!


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Therefore, the equation of the circle is C, x² + y² = 9.

6 0
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Marta_Voda [28]

Answer:

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Step-by-step explanation:

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7 0
3 years ago
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