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Flura [38]
3 years ago
8

The Chinese Buffet costs $9.95 a person. Johnny, his mother, and his father have dinner there, They receive a 25% discount. What

is the discount? What is their bill after the discount?
Mathematics
1 answer:
zysi [14]3 years ago
6 0

Answer:

$22.39

Step-by-step explanation:

Cost of all meals = $9.95 * 3 = $29.85

Amount of discount = 25/100 * $29.85 = $7.46

Bill = $29.85 - $7.46 = $22.39

hope it helps :)

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Answer:

A.

Step-by-step explanation:


7 0
3 years ago
A discuss moves from P1 (4,8) to P2 (15,17). What is the lincar displacement in the horizontal and vertical directions? What is
Yakvenalex [24]

Answer:

The horizontal displacement is 11 units, the vertical displacement is 9 units, and the projection angle is 39.3 degrees.

Step-by-step explanation:

We can start using the definition of displacement in one dimension between any 2 points which is the difference between them, so we have

\Delta s = s_2-s_1

And apply it to get the horizontal and vertical displacements.

Once we have found them, we can use trigonometric functions to find the projection angle with respect the horizontal.

Linear displacements.

Using the definition of displacement, we can write the horizontal displacement as

\Delta x = x_2-x_1

So we can use the given points P1:(x_1,y_2)  \text{  and  } P_2: (x_2,y_2) on the displacement formula

\Delta x = 15-4\\\Delta x = 11

In the same manner we can look at the y components of those points to find the vertical displacement

\Delta y = 17-8\\\Delta y =9

Thus the horizontal displacement is 11 units and the vertical displacement is 9 units.

Projection angle.

The projection angle with respect the horizontal is the angle that is made between the line that connects the points P1 and P2 and the horizontal, so we can use the linear displacements previously found to write

\tan(\theta) = \cfrac{\Delta y}{\Delta x}

Solving for the angle we get

\theta = \tan^{-1}\left(\cfrac{\Delta y}{\Delta x}\right)

Replacing values

\theta = \tan^{-1}\left(\cfrac{9}{11}\right)

Which give us

\theta = 39.3^\circ

So the projection angle is 39.3 degrees.

7 0
3 years ago
Which is the better deal, 139.99 with 20 percent in discountor 139.99 with $20 in discount
Leno4ka [110]
20% discount is definitely the $ saver!
3 0
3 years ago
X/3 - 1/2 = 10<br><br> show work
Viktor [21]

Answer:

x = 63/2

Step-by-step explanation:

x /3  =  21 /2

3 . x/3 = 3 . 21/2

x  =  63 /2

8 0
3 years ago
What distance is required to stop a car traveling at 50 mph
Ksivusya [100]
In order for a car to stop, it requires a max of 10ft depending on the brakes it has.
5 0
3 years ago
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