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GuDViN [60]
2 years ago
10

Help me ASAP plzzz……

Mathematics
2 answers:
Ivenika [448]2 years ago
6 0
X = 20

This is an isosceles triangle so third angle is also 2x because of symmetry.
Angle sum = 5x + 2x + 2x = 9x = 180 degrees
Svetach [21]2 years ago
3 0

Answer:20, 40, 40,100

Step-by-step explanation:

5x+2x+2x=180 9x=180 x=20

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Can you prove that DEF = HGF.!? Justify your answer.
frosja888 [35]

Step-by-step explanation:

In  \: \triangle DEF  \: \&  \: \triangle HGF  \\ EF \:  \cong \:  GF...(given)  \\  \angle EFD \cong  \angle GFH \\ (vertically \: opposite \: angles) \\ \ DF \:  \cong \:  HF...(given) \\   \therefore \: \triangle DEF  \cong \triangle HGF \\ (By\: SAS \:criterion\: of \:congruence)

7 0
3 years ago
Evaluate 8x-y2-3 when x = -1/4 and y=3<br>plz help
UkoKoshka [18]

Answer:

-14

Step-by-step explanation:

8x-y²-3

8(-1/4) - (3)² - 3

-2 - (9) - 3

= -14

6 0
2 years ago
Which function is the inverse of function 1?<br> f(x) = 9.12 - 12
mojhsa [17]
1-4, 5, 8, 9, 12, 13, 15, 18, 21, 22, 27, 31, 34, 37, 46, 48, 51, 71, 74, 83 look at this chart you will find the answer easy
8 0
2 years ago
Please help for 50 points...
vaieri [72.5K]

Answer:

7. ○ ∆<em>ACB</em> ≅ ∆<em>DFE</em>

6. ○ \displaystyle 43°

5. ○ \displaystyle ∠M ≅ ∠S

4. ○ \displaystyle octagon

3. ○ \displaystyle squares

2. ○ \displaystyle rhombus

1. ○ \displaystyle equilateral\:triangle

Step-by-step explanation:

7. Everything is in correspondence with each other, so just follow the pattern in the order the they were originally.

6. All angles correspond with each other, so just follow the pattern.

5. All segments and angles correspond with each other, so just follow their patterns.

4. An <em>octagon</em><em> </em>has eight sides, a triangle has three sides, a <em>hexagon</em> has six sides, and a <em>pentagon</em><em> </em>has five sides. With this being stated, you have your answer.

3. In a previous lesson, we confirmed that <em>all squares </em><em>are</em><em> </em><em>rectangles</em><em> </em>because it is a quadrilateral with four right angles.

2. This is obviously a rhombus because it is a quadrilateral with four congruent angles and sides.

1. An EQUILATERAL TRIANGLE is a regular polygon because they have three congruent angles and sides.

I am joyous to assist you anytime.

4 0
3 years ago
Read 2 more answers
Can someone plz help me with numbers 8,10,12. Need for today
bearhunter [10]
 #8:   14.95+7.55=22.50 so the cost of the DVD is $22.50 and the subtraction equation is, 22.50-7.55=14.95

#10: 2/3+1/3=1 so m=1

#12: 7/9+1/3=10/9 or 1  1/9 
6 0
3 years ago
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