Ask question

Ask question

All categories

3 years ago

5

LeAnn is purchasing.giftwrap for a box that measures 8 inches long, 6 inches wide, and 6 inches tall. Calculate the total area o

f the box that will be covered in.giftwrap.

1 answer:

elena-14-01-66 [18.8K]3 years ago

6 0

Answer:

$264\ in^2$

Step-by-step explanation:

The total are of cuboid with length of $l$ inches, width of $w$ inches and height of $h$ inches is

$SA=2(lw+lh+wh)\ in^2$

In your case,

$l=8\ in\\ \\w=6\ in\\ \\h=6 \ in$

Thus,

$SA=2(8\cdot 6+8\cdot 6+6\cdot 6)\\ \\=2(48+48+36)\\ \\=2\cdot 132\\ \\=264\ in^2$

You might be interested in

What is the eighth term in the following sequence?

posledela

The answer to this question is A.48

7 0

3 years ago

Read 2 more answers

Use long division to find the quotient below.<br> (x2 + 3x - 18) + (x-3)

Vanyuwa [196]

Answer:

6x-21

Step-by-step explanation:

6 0

3 years ago

Calculate two iterations of Newton's Method for the function using the given initial guess. (Round your answers to four decimal

pickupchik [31]

Answer:

The first and second iteration of Newton's Method are 3 and $\frac{11}{6}$ .

Step-by-step explanation:

The Newton's Method is a multi-step numerical method for continuous diffentiable function of the form $f(x) = 0$ based on the following formula:

$x_{i+1} = x_{i} -\frac{f(x_{i})}{f'(x_{i})}$

Where:

$x_{i}$ - i-th Approximation, dimensionless.

$x_{i+1}$ - (i+1)-th Approximation, dimensionless.

$f(x_{i})$ - Function evaluated at i-th Approximation, dimensionless.

$f'(x_{i})$ - First derivative evaluated at (i+1)-th Approximation, dimensionless.

Let be $f(x) = x^{2}-8$ and $f'(x) = 2\cdot x$ , the resultant expression is:

$x_{i+1} = x_{i} -\frac{x_{i}^{2}-8}{2\cdot x_{i}}$

First iteration: ( $x_{1} = 2$ )

$x_{2} = 2-\frac{2^{2}-8}{2\cdot (2)}$

$x_{2} = 2 + \frac{4}{4}$

$x_{2} = 3$

Second iteration: ( $x_{2} = 3$ )

$x_{3} = 3-\frac{3^{2}-8}{2\cdot (3)}$

$x_{3} = 2 - \frac{1}{6}$

$x_{3} = \frac{11}{6}$

7 0

3 years ago

Subtracting polynomials

myrzilka [38]

Answer:

-11xy

Step-by-step explanation:

Subtracting a negative means adding.

-14xy - (-3xy) = -14xy + 3xy = -11xy

7 0

3 years ago

Order of operations is a set of rules that allow mathematicians to get the same value from a given expression.

Volgvan

Answer:

6

Step-by-step explanation: 4^2 - 8 / (1+3) x 5 = 4^2 - 8 / 4 x 5 = 16 - 8 / 4 x 5 = 16 - 2 x 5 = 16 - 10 = 6

4 0

3 years ago

Read 2 more answers