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AleksandrR [38]
4 years ago
13

Find each angle measure. (13-16) Find each value. (17-20)

Mathematics
1 answer:
Bad White [126]4 years ago
8 0
Question 15

This is an isosceles triangle, which means the base angles given are equal.

x^2 = 3x + 10

x^2 - 3x - 10 = 0

(x - 5)(x + 2) = 0

Set each factor to 0 and solve for x.

x - 5 = 0

x = 5

x + 2 = 0

x = - 2

Reject x = -2.

Angle D = 5^2 ir 25°.

Angle E = 3(5)+10 or 25°.

The total measure of the angles of any triangle is 180°.

So, angle F = 180° - 50°.

Angle F = 130°.
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Answer:

300

Step-by-step explanation:

4=25%

12=1200

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add the zeroes from 1200

300

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300x4=1200

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3 years ago
Which could be the area of one face of the rectangular prism? Select three options.
Anit [1.1K]

Answer:

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Step-by-step explanation:

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3 years ago
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If 5 (3x - 7) = 20 what is 6x - 8​
garri49 [273]
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6 0
3 years ago
Chords and arcs. Can someone please help me with this and explain???20 points
anyanavicka [17]

Answer:

89

Step-by-step explanation:

So the line segment CD is 12.7 and half that is 6.35.  I wanted this 6.35 so I can look at the right triangle there and find the angle there near the center.  This will only be half the answer.  So I will need to double that to find the measure of arc CD.  

Anyways looking at angle near center in the right triangle we have the opposite measurement, 6.35, given and the hypotenuse measurement, 9.06, given. So we will use sine.

sin(u)=6.35/9.06

u=arcsin(6.35/9.06)

u=44.5 degrees

u represented the angle inside that right triangle near the center.  

So to get angle COD we have to double that which is 89 degrees.  

So the arc measure of CD is 89.  

5 0
3 years ago
Simplify: 1.3 + (–6) + (–4.25)
Dmitrij [34]

Answer:

-8.95

Step-by-step explanation:

1.3 - 6 - 4.25

-4.7 - 4.25

-8.95

Hope this helps!

Have a nice day!

If you find my answer helpful

<em>Pls consider marking my answer as </em><em>Brainliest</em><em>! It would mean a lot!</em>

6 0
3 years ago
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