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trapecia [35]
4 years ago
6

The base of an isosceles triangle is 7 cm longer than the legs. Find the legs if the perimeter of the triangle is 43 cm.

Mathematics
2 answers:
Archy [21]4 years ago
8 0
An isosceles triangle is a triangle that has one pair of equal sides. The Formula in finding the perimeter of a triangle is PΔ=S₁+S₂+S₃. Since two legs are missing, and the given are the base and perimeter, we will use the formula : S₁+S₂ = PΔ-S₃, where: S₁+S₂ are the legs and <span>S₃ is the base.
Substitute values:
</span><span>S₁+S₂ = 43cm - 7 cm
</span>          = 36 cm
since S₁ and S₂ are equal, divide 36cm by 2. Therefore S₁ and <span>S₂ measures 18cm.
Check: </span><span>PΔ=S₁+S₂+S₃
</span><span>                 = 18cm + 18 cm + 7cm
                 = 43cm

</span>
Nataly_w [17]4 years ago
5 0

Answer:

121

Step-by-step explanation:

legs are x but base is x+7

x+x+x+7 is perimeter = 43

3x+7=43

3x=36

x=12

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2w^2-11w=-12 <br> a w=3/2 or 4<br> b w=1 or 12<br> c w=1 or 7<br> d w = 2.5 or 6
dlinn [17]
Hey mate !!
Here's your answer !!


2w^2 - 11w = -12
2w^2 -11w + 12 = 0
2w^2 - 8w - 3w + 12 = 0

2w ( w - 4) -3 ( w - 4) = 0
(2w - 3) ( w - 4) = 0

Hence

2w - 3 = 0
2w = 3
w = 3/2

w - 4 = 0
w = 4

Hence value of w are 4 and 3/2

Hope this helps!!
Cheers!!
7 0
4 years ago
In a certain parking lot 1 out of every 9 blue cars. What percent of the cars in this lot is blue​
alexdok [17]

Answer:

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Step-by-step explanation:

3 0
3 years ago
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Help plz!!!!!!!!!!!!!
trapecia [35]

Answer:

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6 0
3 years ago
Why isn’t the maximum ACT score (36) at the 100th percentile?
irga5000 [103]

Answer and Explanations

ACT score percentile help colleges compare students with one another, rather than just looking at everyone’s score. The  score range is between 1 and 36, the highest score that one can receive on the ACT is 36. Moreover, 36 is the perfect score.

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BlackZzzverrR [31]

Answer:

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Step-by-step explanation:

12x3 - 3(2x3 + 4x -1) - 5x + 7 Simplifed is 6x^3 − 17x + 10

7 0
3 years ago
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