Answer:
B
Step-by-step explanation:
Sorry if I am incorrect!
I have no clue what grade are you in
Answer:
y = - 2x + 7
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 )
Calculate m using the slope formula
m = 
with (x₁, y₁ ) = (0, 7 ) and (x₂, y₂ ) = (5, - 3 )
m =
=
= - 2
The line crosses the y- axis at (0, 7 ) ⇒ c = 7
y = - 2x + 7 ← equation of line
arccos (-1/2) = angle whose cosine = -1/2
= 2pi / 3
Its the first choice.
Answer:
a = 8.2 cm, b = 37.5 cm
Step-by-step explanation:
80/500 = (a/20.5)²
a²/420.25 = 80/500
a² = (80 * 420.25)/500 = 67.24
a = 8.2 cm
80/500 = (15/b)²
225/b²=80/500
b² = (225 * 500)/80 = 1406.25
b = 37.5 cm