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a_sh-v [17]
3 years ago
15

Estimate a 15% tip on a dinner bill of $79.42 by first rounding the bill amount to the nearest ten dollars.

Mathematics
2 answers:
lora16 [44]3 years ago
3 0

Answer:

I don't know if this is right but

Tip Total: $ 12

Total (Bill + Tip): $ 92

Sorry if this is wrong

Step-by-step explanation:

olchik [2.2K]3 years ago
3 0

Answer:

$12 tip

Step-by-step explanation:

For this problem let's first round our bill amount to the nearest ten dollars.  So $79.42 becomes $80.00.  From here we will simply need to find 15% of $80.00 which can be found simply through multiplication as follows:

$80.00 * 0.15 = ?

$80.00 * 0.15 = 12

So, we can say the estimated 15% tip for the bill is $12.

Cheers.

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Work out the volume of the shape​
pashok25 [27]

Answer:

\large\boxed{V=\dfrac{1,421\pi}{3}\ cm^3}

Step-by-step explanation:

We have the cone and the half-sphere.

The formula of a volume of a cone:

V_c=\dfrac{1}{3}\pi r^2H

r - radius

H - height

We have r = 7cm and H = (22-7)cm=15cm. Substitute:

V_c=\dfrac{1}{3}\pi(7^2)(15)=\dfrac{1}{3}\pi(49)(15)=\dfrac{735\pi}{3}\ cm^3

The formula of a volume of a sphere:

V_s=\dfrac{4}{3}\pi R^3

R - radius

Therefore the formula of a volume of a half-sphere:

V_{hs}=\dfrac{1}{2}\cdot\dfrac{4}{3}\pi R^3=\dfrac{2}{3}\pi R^3

We have R = 7cm. Substitute:

V_{hs}=\dfrac{2}{3}\pi(7^3)=\dfrac{2}{3}\pi(343)=\dfrac{686\pi}{3}\ cm^3

The volume of the given shape:

V=V_c+V_{hs}

Substitute:

V=\dfrac{735\pi}{3}+\dfrac{686\pi}{3}=\dfrac{1,421\pi}{3}\ cm^3

7 0
3 years ago
I need this answered right now please !!!
Vera_Pavlovna [14]

Answer:

2

Step-by-step explanation:

3 0
3 years ago
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The length of a rectangular deck is five times it's width if the decks perimeter is 24 feet what is the decks area
miv72 [106K]

Answer:

20 square feet

Step-by-step explanation:

The length of a rectangular deck is five times it's width if the decks perimeter is 24 feet what is the decks area

Step 1

We find the Length and Width of the deck

Perimeter of a rectangle = 2L + 2W

The length of a rectangular deck is five times it's width

W = Width

L = Length = 5W

P = 24 feet

Perimeter = 2(5W) + 2W

24 = 10W + 2W

24 = 12 W

W = 24/12

W = 2 feet

Solving for L

L = 5W

L = 5 × 2 feet

L = 10 feet

Step 2

We find the area of the deck

Area of the deck(Rectangle) = Length × Width

= 10 feet × 2 feet

= 20 square feet

4 0
2 years ago
Help with these questions ​
love history [14]

Answer: a) -27, b) 35, c) 14

Step-by-step explanation:

a) When a positive number is multiplied by a negative number, your answer is negative, and since we know that 9 × 3 = 27, and that this figure has to be negative (since 9 is negative), the answer is -27.

b) Multiplying two negative numbers gives a positive number, and since 7 × 5 = 35, the answer is positive 35 (as both 7 and 5 in the original question are negative).

c) Follows just like b.

8 0
3 years ago
Please Help!! Find the Polynomial!!
grin007 [14]

Answer:

\pi x^2-8\pi x+16\pi

Step-by-step explanation:

To find the area of the inner circle, we need to find its radius. Here, we can write the radius as 4 - x. Now, we can use the formula A=\pi r^2:

A = \pi * (4-x)^2

We can expand the square:

A = \pi *(16-8x+x^2)=\pi x^2-8\pi x+16\pi

Thus, the polynomial is \pi x^2-8\pi x+16\pi.

Hope this helps!

7 0
3 years ago
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