Good evening ,
Answer:
∠b = 12°
Step-by-step explanation:
∠a and ∠b are complementary angles ⇔ ∠a + ∠b = 90
Then ∠a =90 - ∠b = 90 - 78 = 12°
:)
All right i just earned that today!
This is the formula An = A1 + ( n-1 )D
You would take A19 = -1 + ( 19 - 1 ) -4
-1 + 18(-4)
-1 + -72
-73
Hope that helped!
:)
Answer:
25 = 23
100 = X
Cross multiply and you will have:
25x = 2300
Step-by-step explanation:
Answer:
The constant proportionally of the graph is:
Step-by-step explanation:
We know that when 'y' varies directly with 'x', we get the equation
y ∝ x
y = kx
k = y/x
here 'k' is called the constant of proportionality.
From the graph, it is clear that:
at x = 0.5, the value of y = 4
so substituting x = 0.5 and y = 4 in the equation
k = y/x
k = 4/0.5
k = 8
at x = 1, the value of y = 8
so substituting x = 1 and y = 8 in the equation
k = y/x
k = 8/1
k = 8
Therefore, the constant proportionally of the graph is:
