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MArishka [77]
3 years ago
8

Can someone help this is hard

Mathematics
1 answer:
Svetlanka [38]3 years ago
3 0
They are linear pairs
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The flag of a country contains an isosceles triangle.​ (Recall that an isosceles triangle contains two angles with the same​ mea
Mrac [35]
Let us start with the unknown. Let us give one of the base angles the value of x. The other base angle is also x since both the base angles in an isosceles triangle will be equal. The remaining angle is 40 more than three times one of the base angles.It is 3x + 40. Here we get the equation

x+x+3x+40=180

5x + 40 = 180

5x = 180 - 40 = 140

Therefore x = 140/5 = 28

So the angles are 28, 28 and 124.

The third angle is 3 times 28 + 40 = 84 + 40 = 124.
5 0
3 years ago
I need help with 25.
noname [10]

Sum of linear pair of angles = 180°

so

<EFG + <GFH = 180°

2n + 21 + 4n + 15 = 180°

6n + 36 = 180°

6n = 144

n = 24

<EFG = 2(24) + 21 = 69°

<GFH = 4n + 15 = 4(24) + 15 = 111°

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3 years ago
Help ASAP pleasee!!!!
Aleks04 [339]

Answer:

243

Step-by-step explanation:

hope this helps!! god bless!! -Natalia

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3 years ago
What is the area of triangle ABC?
erica [24]

Answer:

what is the area of triangle ABC choices

35 square unit

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2 years ago
The lengths of three sides of a triangle are given. Classify each triangle as acute, right, or obtuse. 6,9,7
katrin2010 [14]
Answer : acute
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6^2+7^2 > 9^2
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