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melomori [17]
2 years ago
10

Which set of shapes contains members that are always similar to one another?.

Mathematics
1 answer:
Viefleur [7K]2 years ago
8 0
Answer: Equilateral triangles.

Explanation: We know that in similar polygons, its all the corresponding angles are congruent. Only the set of equilateral triangles contains members that are always similar( by AAA similarity criteria) to one another as the measure of all the angles of equilateral triangle is fixed i.e. 60°.
Rest other do not have fixed measure for angles in it.
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Find the quadratic function ..<br><br> 3x2 - y2 = 9<br><br> x2 + 2y2 = 38
ruslelena [56]

Answer:

Step-by-step explanation:

3x2 - y2 = 9.........(1)

x2 + 2y2 = 38......(2)

Let x^2 = a and y^2 = b

:- the two equations becomes

3a - b = 9..........(3)

a + 2b = 38.......(4)

Multiplying (4) by 3

3a + 6b = 114........(5)

Substracting (3) from (5)

3a - 3a + 6b - (-b) = 114 - 9

6b +b = 105

7b = 105

b = 105/7

b = 15

And 3a - b = 9 putting b = 15

3a - 15 = 9

3a = 15+9

3a = 24

a = 24/3

a = 8

And

x^2 = a

x^2 = 8

x = √8

x = √(4×2)

x = 2√2

Also y^2 = b

y^2 = 15

y = √15

6 0
2 years ago
A fast-food crew, worked 9 months out of the year. What percent of the year did she work?
vladimir2022 [97]

Answer:

75%

Step-by-step explanation:

9/12 x 100% = 75%

There are a total of 12 months so 9 months over 12 months.

5 0
2 years ago
Factor the perfect square trinomials<br>a2+20a+100​
sukhopar [10]

Answer:

-10

Step-by-step explanation:

a^{2} +(10+10)a+100

a^{2} +10a+10a+100

a(a+10)+10(a+10)

(a+10)(a+10)

so,a=-10

6 0
3 years ago
A plane is flying at 35,000 feet. it ascends 1,500 feet to avoid turbulence. it decends 3/5 of its new height to prepare for lan
Serjik [45]

Answer:Ascending Height : 36,500 feet Descending Height : 14,600 feet

Step-by-step explanation:

6 0
3 years ago
Which equation is graphed in the figure?
djyliett [7]

Answer:

so the answer would be A. 7/5x +2

if you try graphing all the other equations it would be either over the picture or just not in the right place.

5 0
2 years ago
Read 2 more answers
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