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zvonat [6]
2 years ago
11

A group of friends goes out to lunch. The total bill, excluding tax, is $22. If tax on the meal is 6% and if a 20% tip is left o

n the $22 total bill, then the total amount paid for the meal is $​
Mathematics
1 answer:
TiliK225 [7]2 years ago
5 0

Answer:

27.72

Step-by-step explanation:

Sorry about before i made a slight mistake

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PLEASE HELP precal!
sergij07 [2.7K]
Check the picture below

so.. .hmmm the vertex is at the origin... and we know the parabola passes through those two points... let's use either.. say hmmm 100,-50, to get the coefficient "a"

keep in mind that, the parabolic dome is vertical, thus we use the y = a(x-h)²+k  version for parabolas, which is a vertical parabola

as opposed to x = (y-k)²+h, anyway, let's find "a"

\bf y=a(x-0)^2+0\implies y=ax^2\qquad 
\begin{cases}
x=100\\
y=-50
\end{cases}\implies -50=a100^2
\\\\\\
\cfrac{-50}{100^2}=a\implies -\cfrac{1}{200}=a
\\\\\\
thus\qquad \qquad y=-\cfrac{1}{200}x^2\implies \boxed{y=-\cfrac{x^2}{200}}

now.. .your choices, show.... a constant on the end.... a constant at the end, is just a vertical shift from the parent equation, the equation we've got above.. is just the parent equation, since we used the origin as the vertex, it has a vertical shift of 0, and thus no constant, but is basically, the same parabola, the one in the choices is just a shifted version, is all.


5 0
3 years ago
What vocabulary term means 1 of 1,000 equal parts of a whole
svlad2 [7]

Answer:

one thousandnths, sorry i cant rlly spell it

Step-by-step explanation:

3 0
3 years ago
How do I solve this quadratic using the square root property
Nataly [62]

Answer: x=2−2√3,2+2√3

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Translate the point (5,2)—> 3 units to the left
VladimirAG [237]

Given:

The point (5,-2) is translated 3 units to the left.

To find:

The new location of the point.

Solution:

If a point is translated 3 units to the left, then

(x,y)\to (x-3,y)

Using this rule of translation, we get

(5,-2)\to (5-3,-2)

(5,-2)\to (2,-2)

Therefore, the new location of the point is (2,-2). Hence, the correct option is C.

7 0
2 years ago
Someone please help me ASAP!
loris [4]
It would be (-5,-1) yw
8 0
3 years ago
Read 2 more answers
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