Answer:
You will know when two lines exactly verticle and horizontle meet together that one intersection will be a right angle it will be exactly 90 degrees.
Answer:
a=1.5, b= 3
Step-by-step explanation:
sum of all sides will give us perimeter. Therefore
2a+b+6a+2b+1+4a=28
12a+3b+1=28
12a+3b=27....eqn1
since t two sides of this isosceles triangle are equal:
2a+b=4a
2a=b

substituting 
in the first equation whenever we encounter a we will have:

6b+3b=27
9b=27
b=3
therefore 
Answer:
Black socks pairs = 7
Brown socks pairs = 3
White socks pairs = 8
P(not black) = ?
First, you need to add the brown & white socks pairs,

Then you need to add the total number of socks pairs,

P(not black)

Answer:
y = 5x + 29
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
y = 5x + 2 is in this form with slope m = 5
• Parallel lines have equal slopes, hence
y = 5x + c ← is the partial equation of the parallel line
To find c substitute (- 6, - 1) into the partial equation
- 1 = - 30 + c ⇒ c = - 1 + 30 = 29, thus
y = 5x + 29 ← in slope- intercept form
Answer:
2?
Step-by-step explanation:
Is it 3x ^ 2 times y?