(5x+5) + (5x-5) = 90 degrees (since it’s a right angle)
take out of brackets: 5x+5+5x-5=90
put like terms together: 5x+5x+5-5=90
combine like terms: 10x=90
make x stand alone and divide 90 by 10: x=9
now that we know what x is, we can find the measures:
First one:
=5x+5
=5(9)+5
=45+5
=50
Second
=5x-5
=5(9)-5
=45-5
=40
Hope that helps!!!
The m<B for question 1 is 46 degrees, for question 2 the m<Y is one hundred and seventeen degrees.
Answer:
Below
Step-by-step explanation:
The surface are is given by this formula:
Sa= area of the base*the heigth + the area of the base *2
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2)
The base here has a triangular form.
Let A be the area of this triangle.
A= (6*8)/2 = 24 cm^2
Sa = A* 6 + A*2
Sa= 24*6 + 24*2
Sa = 192 cm^2
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The base here is a circle.
The area of a circle is :
A= r^2 * Pi
r is the radius (here 12 km)
A = 12^2* Pi
A= 144 Pi cm^2
Sa = 2*A + A* h
Sa = 7* 144* Pi + 2* 144* Pi
Sa= 4071.504
So the surface area is aporoximatively 4072 km^2