Kayla rolls two fair number cubes each numbered 1 through 6.She needs to roll a sum of 9 or more to win the game. She rolls the
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The answer is C.
The expression is telling you to multiply the parenthesis times four. When you multply two numbers, , it means that you're considering
"copies" of
, or if you prefer,
repeated
times.
So, you have
<- this is twice as much as the parenthesis
<- this is three times as much as the parenthesis
<- this is four times as much as the parenthesis
2x - 3y = - 13
the equation of a line in standard form is
Ax + By = C ( A is a positive integer and B, C are integers )
First obtain the equation in slope-intercept form
y = mx + c ( m is the slope and c the y-intercept )
calculate m using the gradient formula
m = ( y₂ - y₁ ) / (x₂ - x₁ )
with (x₁, y₁ ) = (1, 5 ) and (x₂, y₂ ) = (- 2, 3 )
m = =
=
y = x + c ← partial equation
to find c substitute either of the 2 points into the partial equation
using (1, 5 ), then
5 = + c ⇒ c =
rearrange the equation into standard form
multiply through by 3
3y = 2x + 13 ( subtract 3y and 13 from both sides )
2x - 3y = - 13 ← in standard form