yes you did a very good job
Answer:
see explanation
Step-by-step explanation:
We require to find the slope m of the line joining the 2 given points
To find m use the slope formula
m = (y₂ - y₁ ) / (x₂ - x₁ )
with (x₁, y₁ ) = (2,3) and (x₂, y₂ ) = (1, - 2)
m =
=
= 5
Given a line with slope m then the slope of a line perpendicular to it is
= -
= - ![\frac{1}{5}](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B5%7D)
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept ), thus
y = -
x + c ← is the partial equation of the perpendicular line
To find c substitute (- 3, 2) into the partial equation
2 =
+ c ⇒ c = ![\frac{7}{5}](https://tex.z-dn.net/?f=%5Cfrac%7B7%7D%7B5%7D)
y = -
x +
← perpendicular equation
Answer:
$38.31
Step-by-step explanation:
Given:
Pure silver that cost $33.48 per ounce used to form $24.35 alloy/ounce.
Question asked:
How many ounces of pure silver were used to make an alloy of silver costing $27.87 per ounce?
Solution:
At cost $24.35/ounce, pure silver is mixed = $33.48
At cost $1/ounce, pure silver is mixed = ![\frac{33.48}{24.35}](https://tex.z-dn.net/?f=%5Cfrac%7B33.48%7D%7B24.35%7D)
At cost $27.87/ounce, pure silver is mixed = ![\frac{33.48}{24.35}](https://tex.z-dn.net/?f=%5Cfrac%7B33.48%7D%7B24.35%7D)
![\times 27.87 = \frac{933.08}{24.35} = 38.31](https://tex.z-dn.net/?f=%5Ctimes%2027.87%20%3D%20%5Cfrac%7B933.08%7D%7B24.35%7D%20%20%3D%2038.31)
Thus, $38.31 ounces of pure silver were used to make an alloy of silver costing $27.87 per ounce.
Answer:600 meters per minute
Step-by-step explanation:
Answer:
m=3/4
Step-by-step explanation: