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TiliK225 [7]
3 years ago
9

Please help me on this

Mathematics
1 answer:
avanturin [10]3 years ago
5 0

Answer:

1. 8

2. 11

3. 14

4. 17

Step-by-step explanation:

When there is a number next to a number inside parenthesis, it means you multiply those together. Don't forget to use PEMDAS either. So you first multiply 3(and whatever number is inside) and then add 5. Hope this helped :)

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Because the three sides are congruent, what foes that make each angle measure according to the equilateral triangle theorem.
m_a_m_a [10]
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3 0
3 years ago
Read 2 more answers
4. An equilateral triangle has a perimeter of 60 cm. Find the exact<br> altitude of the triangle.
taurus [48]

Step-by-step explanation:

<h2>GIVEN:-</h2>

The Perimeter of Equilateral triangle = 60cm

<h2>UNDERSTANDING THE CONCEPT:-</h2>

According to the question,

To find the height of the triangle,

Perimeter of Equilateral triangle = Area of Equilateral triangle.

<h2>FORMULA USED:-</h2>

60 =  \frac{ \sqrt{3} }{4} a {}^{2}  \\

<h2>REQUIRED ANSWER:-</h2>

60 \times 4 =  \sqrt{3a {}^{2} }

a {}^{2}  = 240 \sqrt{3}  \\

a = 120 \sqrt{3} cm

<h3>SO, The Exact height of the triangle is 120√3cm.</h3>
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Thirty times the square of a non-zero number is equal to 8 times the number. What is the number?
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