Answer:
for a, look at my picture
b = 19.5 inches
Step-by-step explanation:
A is simple. thats my take on it, but other people coudl've drawn it differently
B is more difficult. I made triangle QRS like that so i can make a ratio.
My ratio:
QX:QY = QR:QS
8:12=13:QS
13*12 = 8*QS
156/8 = 19.5
therefore 19.5 inches
Answer:
α = 20.5
β = 69.5
c = 90
Step-by-step explanation:
we have to make 2 equations one for the relationship between the angles and another for the sum of all the angles
β and α are the acute angles
β = 3α + 8
α + β + 90 = 180
we replace in the second equation the value of β by (3α + 8)
α + β + 90 = 180
α + (3α + 8) + 90 = 180
a + 3a = 180 - 90 - 8
4a = 82
a = 82/4
a = 20.5
now we replace the value of b in the other equation
β = 3α + 8
β = 3 * 20.5 + 8
β = 69.5
Answer:
yes
Step-by-step explanation:
it is rational
Answer:
x= 5/2w-15 .
Step-by-step explanation:
See the image below:)
Answer:
--- Vertex
--- Axis of symmetry
Step-by-step explanation:
Given
Solving (a): The vertex
For an equation written in
The vertex is:
By comparison:
and
So, the vertex is:
Solving (b): The axis of symmetry
For an equation written in
The axis of symmetry is:
x = h
In (a):
So: