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3 years ago

7428.358146 round to nearest cent

Mathematics

2 answers:

anastassius [24]3 years ago

6 0

Answer:

7428.40

Step-by-step explanation:

blsea [12.9K]3 years ago

5 0

Answer:

7428.36 is round of 7428.358146 to the nearest cent.

Step-by-step explanation:

Do these simple steps to round the number to nearest cents:

To round the amount to the nearest cent check the value of its thousandths place.
If the value is greater than or equal to 5 increase the cent's place in hundredths by 1 and remove all the digits right after the second decimal value.
If the value is less than 5 or less remove all digits right next to the second decimal value.

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this is formula manipulation, I'd appreciate if the steps were provided. only respond if you know how to get the answer, thank y

marissa [1.9K]

Answer:

r = 3V/(2πh²)
h = 3V/b²
r = 25/π cm ≈ 7.9577 cm
w = 15 cm

Step-by-step explanation:

1. Multiply both sides of the equation by the reciprocal of the coefficient of r.

$V\cdot\dfrac{3}{2\pi h^2}=r\\\\r=\dfrac{3V}{2\pi h^2}$

2. Multiply both sides of the equation by the reciprocal of the coefficient of h.

$V\cdot\dfrac{3}{b^2}=h\\\\h=\dfrac{3V}{b^2}$

3. Solve the circumference formula for r, then substitute the given information.

$C=2\pi r\\\\r=\dfrac{C}{2\pi}\qquad\text{divide by the coefficient of r}\\\\r=\dfrac{50\,\text{cm}}{2\pi}=\dfrac{25}{\pi}\,\text{cm}\approx 7.9577\,\text{cm}$

4. Solve the perimeter formula for width, the substitute the given information and do the arithmetic.

$P=2(L+W)\\\\\dfrac{P}{2}=L+W\qquad\text{divide by 2}\\\\\dfrac{P}{2}-L=W\qquad\text{subtract L}\\\\\dfrac{40\,\text{cm}}{2}-5\,\text{cm}=W=15\,\text{cm}$

_____

In general, solving for a particular variable involves "undoing" what has been done to the variable, usually in the reverse order. In part 4, the variable W has L added and the sum is multiplied by 2. We "undo" those operations, last operation first, by dividing by 2 and subtracting L.

The properties of equality say you can do what you like to an equation as long as you do the same thing to both sides of the equation. So, when we say "divide by 2", we mean "divide both sides of the equation by 2." Likewise, "subtract L" means "subtract L from both sides of the equation."

4 0

3 years ago

The sum of 5 consecutive odd numbers is 145.

Anna007 [38]

Let x be the first odd integer. x + 2 the second x + 4 the third x + 6 the fourth x + 8 the fifth. add them up and you get 5x + 20 set 5x + 20 = 145 and solve for x. 5x=145-20 5x=125 x=25 answer=25,27,29,31,33

7 0

3 years ago

Read 2 more answers

Factorise the following completely 3ax+2ay+6bx+4by

marissa [1.9K]

Answer:

(a+2b)(3x+2y)

Step-by-step explanation:

3ax+2ay+6bx+4by = a(3x+2y)+2b(3x+2y) = (a+2b)(3x+2y)

4 0

3 years ago

Read 2 more answers

An item sells for $30 and is on sale for 15% off and the sales tax is 8.2%. What is the final cost to the nearest cent? (Calcula

mestny [16]

Answer:

$27.59

Step-by-step explanation:

You multiply 30 dollars by 0.85 (1-0.15, with the 0.15 being for the 15 percent off). Which gets you to $25.50, and you then multiply it by 1.082 (the 1.082 being the tax, and the .082 part equating to the 8.2% tax percentage).

8 0

3 years ago

HELPPPPPPPP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

zvonat [6]

Let's take this step-by-step:

Part (a)

The mathematical name of this shape is a right trapezoid

⇒ It is a trapezoid since the image shows a quadrilateral that

has two parallel sides and two non-parallel sides. It is a right

trapezoid because it has two rights angles

Part (b)

The cube has 6 faces

⇒ faces are the individual flat surfaces of an object

⇒by looking at a picture of a cube, we see it has 6 sides

⇒ (I attached an image of a cube below)

Hope that helps!

5 0

2 years ago