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photoshop1234 [79]
3 years ago
10

Explanation and help completely lost

Mathematics
2 answers:
Tomtit [17]3 years ago
4 0

Hello.


The find the measure of side c, you should use the Law of Sines. This law states, sin A / a = sin B / b = sin C / c. Since you are given two angle measures and the measure of a side, you can substitute these values into sin B / b = sin C / c.


Here are the given values: sin B = 105 degrees, sin C = 15 degrees, side b = 2 cm.


sin (105) / 2 = sin (15) / c (multiply both sides by c)

sin (105) / 2 · c = sin (15)

0.48296... · c = 0.25881... (divide both sides by 0.48296)

c = 0.53588..


The value of side c is about 0.5 centimeters.

Digiron [165]3 years ago
3 0

Not sure about explanation I just added 105 and 15 and subtracted from 180 to get 70 you can try that.

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The measure of the vertex angle of an isoceles triangle is one- fourth that of a base angle
horsena [70]

Answer:

Base angle = 72

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Step-by-step explanation:

Measure of the base angle = x. But there are two of them. (Definition of isosceles).  Keep that in mind.

The vertex angle is 1/4 of one of the base angles. That means that the vertex is 1/4 x

All three angles = 180 degrees.

So we have x + x + x/4 = 180 degrees.

change 1/4x to 0.25x x since 1/4 = 0.25

Equation

x + x + 0.25 = 180

2.5x  = 180

Solution

2.5x = 180                      Divide by 2.5 on both sides

2.5x/2.5 = 180/2.5

x = 72

Answer

That means that each base angle = 72 degrees

The Vertex Angle = 72/4 = 18

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A) The card states that it makes 60 cookies. How much flour is required for 30 people?
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Answer:

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Section J in an arena has 20 rows. Each row has 15 seats. Our tickets cost $18 each. If all the seats are sold, how much money w
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Hatshy [7]

Answer:

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if f(x) = 2x+7, the rate of change is 2.

Step-by-step explanation:

We know that the average rate of change over the interval x=0 to x=8 is:

(f(x2) - f(x1))/x2-x1

Where:

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