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Lelechka [254]
3 years ago
15

#18 i can't figure this out

Mathematics
1 answer:
Anon25 [30]3 years ago
4 0

Answer:

∠Q = 75 °

Step-by-step explanation:

Since PR = PQ then Δ PQR is isosceles and the base angles are congruent, that is

∠R = ∠Q = 2x + 15

The sum of the 3 angles in a triangle = 180°

Sum the 3 angles and equate to 180

2x + 15 + 2x + 15 + x = 180, that is

5x + 30 = 180 ( subtract 30 from both sides )

5x = 150 ( divide both sides by 5 )

x = 30

Hence

∠Q = 2x + 15 = (2 × 30) + 15 = 60 + 15 = 75°

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Answer question please
otez555 [7]

Answer:

X=30, Scalene

Step-by-step explanation:

A circle is 360, The triangle is in the circle.

Part A:3x+30+2x+20+5x+10=360

10x+60=360

<u>-60=-</u><u>60</u>

10x=300

x=30

Part B:<em>Side BA</em><em> </em><em>is</em><em> </em><em>3</em><em>(</em><em>3</em><em>0</em><em>)</em><em>+</em><em>3</em><em>0</em><em>=</em><em>1</em><em>2</em><em>0</em>

<em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em>Side</em><em> </em><em>BC</em><em> </em><em>is</em><em> </em><em>2</em><em>(</em><em>3</em><em>0</em><em>)</em><em>+</em><em>3</em><em>0</em><em>=</em><em>9</em><em>0</em>

<em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em>Side</em><em> </em><em>AC</em><em> </em><em>is</em><em> </em><em>5</em><em>(</em><em>30</em><em>)</em><em>+</em><em>10</em><em>=</em><em>160</em>

All three sides are unequal

6 0
4 years ago
What must be true about angle 7 and angle 3 for the lines to be parallel? Name the postulate or therom?
Sergio039 [100]
Converse of corresponding angles theorem
8 0
4 years ago
Find the base of a parallelogram if the area is 90 and the ratio of base to altitude is 5:2
Nutka1998 [239]
Area of a Parallelogram = b * h

Total Number of unit ratio = 5+2 = 7

Value of 1 unit = 90/7 = 12.857

Base of the Parallelogram = 12.857 * 5 = 64.285

In short, Your Answer would be: 64.285

Hope this helps!
8 0
3 years ago
Read 2 more answers
Real world problem for 3x-15=10
WINSTONCH [101]
A group of men have x dollars each, then they all want to buy something that costs $15 dollars, they group their money and pay up, then they have $10 left, how much did each man start with?
3 0
3 years ago
1. A right triangle has legs measuring 7 inches and 9 inches. What is true about the hypotenuse? *
JulsSmile [24]

Answer: The hypotenuse is about 11 inches and it is greater than the legs

Step-by-step explanation:

Hi, we have to apply the Pythagorean Theorem:  

c^2 = a^2 + b^2  

Where c is the hypotenuse of the triangle (the longest side) and a and b are the legs.  

Replacing with the values given:  

c^2 = 7^2 + 9^2  

c^2 = 49+81

c^2 = 130

c = √130

c = 11.40 inches  

The hypotenuse is about 11 inches and it is greater than the legs

11.40>7 ; 11.40 >9

Feel free to ask for more if needed or if you did not understand something.  

8 0
4 years ago
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