Answer:
B.
Step-by-step explanation:
Irrational as π is irrational.
I am pertty sure its 0.6 but if i am wrong sorry
- <em>1</em><em>.</em><em>6</em><em>0</em><em> </em><em><u>=</u></em><em><u> </u></em><em>1</em><em>.</em><em>6</em>
<h2><em>hope </em><em>it</em><em> helps</em><em>!</em></h2>
Answer:
![\fbox{\begin{minipage}{16em}Option D: y = (4/7)x + 8 is correct\end{minipage}}](https://tex.z-dn.net/?f=%5Cfbox%7B%5Cbegin%7Bminipage%7D%7B16em%7DOption%20D%3A%20y%20%3D%20%284%2F7%29x%20%2B%208%20is%20correct%5Cend%7Bminipage%7D%7D)
Step-by-step explanation:
(1) A typical form of equation of a line is:
![y = Mx + b](https://tex.z-dn.net/?f=y%20%3D%20Mx%20%2B%20b)
with,
is slope and
is y-intercept.
(2) Another straight line has equation in form of:
![y = Nx + c](https://tex.z-dn.net/?f=y%20%3D%20Nx%20%2B%20c)
with
is slope and
is y-intercept
(3) If these two lines are perpendicular, according to the property of two perpendicular lines on the two-dimensional plane, we have:
x
= -1
(4) Transform the given equation of original line into typical form:
![7x + 4y = -24\\](https://tex.z-dn.net/?f=7x%20%2B%204y%20%3D%20-24%5C%5C)
<=> ![4y = -7x - 24](https://tex.z-dn.net/?f=4y%20%3D%20-7x%20-%2024)
<=> ![y = (\frac{-7}{4})x - \frac{24}{4}](https://tex.z-dn.net/?f=y%20%3D%20%28%5Cfrac%7B-7%7D%7B4%7D%29x%20%20-%20%5Cfrac%7B24%7D%7B4%7D)
<=> ![y = (\frac{-7}{4})x - 6](https://tex.z-dn.net/?f=y%20%3D%20%28%5Cfrac%7B-7%7D%7B4%7D%29x%20-%206)
=> ![M = \frac{-7}{4}](https://tex.z-dn.net/?f=M%20%3D%20%5Cfrac%7B-7%7D%7B4%7D)
=> ![N = \frac{-1}{M} = \frac{-1}{\frac{-7}{4} } = \frac{-4}{-7} = \frac{4}{7}](https://tex.z-dn.net/?f=N%20%3D%20%5Cfrac%7B-1%7D%7BM%7D%20%20%3D%20%5Cfrac%7B-1%7D%7B%5Cfrac%7B-7%7D%7B4%7D%20%7D%20%3D%20%5Cfrac%7B-4%7D%7B-7%7D%20%3D%20%5Cfrac%7B4%7D%7B7%7D)
=> Option D:
is correct (Slope =
)
Hope this helps!
:)
Answer:
$24
Step-by-step explanation:
Since 25% is off the price of the shirt, she bought the shirt at 75% of it's cost price. This difference between the full cost and the 75% is what she saved (i.e. 25% was the savings)
So, if the shirt costs x dollars:
$6 = 25% of x
= ( 25/100)*X = 0.25X
X = $6/0.25 = $6x4
X = $24