Answer:
Step-by-step explanation:
we know that
or
therefore
To obtain the number of meters from the distance measured in centimeters, you must Divide by the number
Answer:
c =
Step-by-step explanation:
Calculate the slope m using the slope formula and equate to
m =
with (x₁, y₁ ) = (5, 4) and (x₂, y₂ ) = (2, c)
m = = , then
= ( cross- multiply )
2(c - 4) = - 3
2c - 8 = - 3 ( add 8 to both sides )
2c = 5 ( divide both sides by 2 )
c =
To know what kind of triangle is it. use the pythagorean theorem:
A^2 + B^2 = C^2,
where C is the longest side of the triangle
if it satisfies the equation then it is a right triangle
if it does not then A^2 + B^2 > C^2 so it is acute triangle
if A^2 + B^2 < C^2 it is obtuse triangle
18^2 + 13^2 ? 27^2
324 + 169 ? 729
493 < 729 so it is obtuse triangle
Answer:
A. 54°
Step-by-step explanation:
Angles in a triangle add up to 180 degrees.
y + y + 72 = 180
2y + 72 - 72 = 180 - 72
2y = 108
(2y)/2 = 108/2
y = 54
Answer:
(x +2) (x+3) = 0
x = -2 x = -3
Step-by-step explanation:
x^2 + 5x+ 6 = 0
To remember how to factor
key word remember word .......d. a. t. p, c
distribute x, add two no's, that also multiply, put together, change sign see below.
step 1 distribute square brackets that mean x^2 = (x ) (x )
step 2 add two numbers that add to get 5
step 3 that also multiply to get 6 = (+2) (+3) = 0
step 4 put together = (x +2) (x+3) = 0
step 5 change sign to = x = x = -2 x = -3