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12345 [234]
3 years ago
14

Brian is finishing a meal at his favorite restaurant. The check shows that the cost of the food is 42 dollars. He adds a 15% tip

to the amount on the check. What is the total amount brian paid?
Mathematics
2 answers:
Serga [27]3 years ago
6 0

42 \times (100\% + 15\%) \\  = 42 \times 115\% \\  = 48.3

Total amount of Brian paid is $48.30.

Hope this helps. - M
Kryger [21]3 years ago
4 0

Answer:

$48.30

Step-by-step explanation:


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90 plus what equals 395
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305 plus 90= 395. Found by doing 395-90
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See the picture below
mart [117]

Answer:

a) 301.59 cubic centimeters

b) 235.87 square centimeters

Step-by-step explanation:

a)

Volume of ice cream cone is volume of hemisphere PLUS volume of cone.

Volume of Hemisphere = \frac{\frac{4}{3}\pi r^3}{2}

radius is given as 4, so,

Volume of Hemisphere = \frac{\frac{4}{3}\pi r^3}{2}\\=\frac{\frac{4}{3}\pi (4)^3}{2}\\=134.04

Now, Volume of Cone = \frac{1}{3}\pi r^2 h

Where radius is 4 and height is 10, so,

Volume of Cone = \frac{1}{3}\pi r^2 h\\=\frac{1}{3}\pi (4)^2 (10)\\=167.55

Volume of Ice Cream Cone = 134.04 + 167.55 = 301.59 cubic centimeters

b)

Surface area of ice cream cone is surface area of hemisphere PLUS surface area of cone.

Surface Area of Hemisphere = 2\pi r^2\\=2\pi (4)^2\\=100.53

Surface Area of Cone = \pi r^2+\pi rl

We dont need to use the first part, \pi r^2  since it is "inside". We  need to find l, slant height, by using pythagorean theorem on a triangle we can make (bottom right).

4^2 + 10^ 2 = l^2

16 + 100 = l^2

116 = l^2

l = 10.77

Now to find the surface area of cone = \pi rl\\=\pi (4)(10.77)\\=135.34

Surface area of ice cream cone = 100.53 + 135.34 = 235.87 square centimeters

5 0
3 years ago
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vaieri [72.5K]
4 1/2x7=31.5
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2 years ago
Question 15<br> Evaluate x = y for x = 3 and y = 12.
nadezda [96]

Answer:

X is four times less/smaller than Y or Y is four times greater than X

Step-by-step explanation:

Not sure what you are asking to do

6 0
3 years ago
Please show your work!!
jarptica [38.1K]

Answer:OK ILL HELP

Step-by-step explanation:Combine  

1

2

and  

x

.

y

=

x

2

−

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