We know that
[lateral surface area of a regular triangular pyramid]=3*[area of one <span>equilateral triangle]
so
[area of one </span>equilateral triangle]=lateral surface/3-----> 81/3-----> 27 ft²
[<span>surface area of the regular triangular pyramid]=lateral area+area of the base
area of the base is equals to the area of the lateral sides because are </span>equilateral triangles
therefore
area of the base=27 ft²
[surface area of the regular triangular pyramid]=81+27----> 108 ft²
the answer is
<span>the surface area of the regular triangular pyramid is 108 ft</span>²
1) m=-2
2) C) y=-3/4x -6
3) D) y=2/5x-2
I don't understand 4 nor 5. My apologies.
6) Parallel
Answer:
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priscillacastillo2
02/10/2019
Mathematics
Middle School
answered
The sum of two numbers is 14 one number is two less than three times the other. find the numbers
1
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Answer:
The numbers are and
Step-by-step explanation:
Let
x-----> one number
y----> the other number
we know that
------> equation A
-----> equation B
Substitute equation B in equation A and solve for y
Find the value of x
Answer:

Step-by-step explanation:
A polynomial function is given by the form:

Where a is the leading coefficient, and <em>p</em> and <em>q</em> are the roots (more can be added if necessary).
Our zeros are 3 and (-2 + 2i).
And our leading coefficient <em>a </em>= 1.
Furthermore, by the Complex Root Theorem, if (-2 + 2i) is a zero, then (-2 - 2i) must also be a zero.
So, by substitution, we acquire:

Simplify:

Expand the second and third factors:

Therefore, our polynomial function of least degree and the given zeros will be:

Answer:
B. 5 x 
Step-by-step explanation:
5 x
x
= 24.49494949...
5 x
= 24.49494949...