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3 years ago

Total surface area??

Mathematics

2 answers:

Savatey [412]3 years ago

8 0

Answer:

$160cm^{2}$

Step-by-step explanation:

Surface Area = $2(wl+hl+hw)$

w = 4

l = 8

h = 4

$2((4*8)+(4*8)+(4*4))$

$2(32+32+16)$

$A = 160$

erastovalidia [21]3 years ago

7 0

Answer:

128

Step-by-step explanation:

couculator mhm thats all

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Which is the correct answer ?

nexus9112 [7]

Answer:

the answer is D. -2N/cm.

6 0

3 years ago

Slope=-4, it goes through (-2,9)

musickatia [10]

Answer:

y= -4x+1

Step-by-step explanation:

If you want to write this equation in slope intercept form, you need to find the y-intercept. Here is your current equation y= -4x + b. Then, substitute the x and y for the coordinate. Now, it should look like this: 9= -4(-2) + b. Multiply -4 and -2 to get 8. Now, this is your equation: 9= 8 + b. Then, subtract 8 from both sides to get your final answer, 1=b. Now that you have your y-intercept, go back to your original equation and fill in 1 for b. This is your final equation: y= -4x+1. Hope this helped!

3 0

4 years ago

Read 2 more answers

Simplify this expression

kompoz [17]

The first step for solving this problem is to know that in order to divide by a fraction,, we must multiply by the reciprocal of that fraction. This will look like the following:
$\frac{x+2}{ x^{2} -6x-16}$ × 9x
Write -6x as a difference.
$\frac{x+2}{ x^{2} +2x-8x-16}$ × 9x
Factor out x from x² + 2x.
$\frac{x+2}{ x X (x+2)-8x-16}$ × 9x
Factor out -8 from -8(x + 2).
$\frac{x+2}{ x X (x+2)-8(x+2)}$ × 9x
Factor out x + 2 from the denominator (bottom) of the expression.
$\frac{x+2}{(x+2)X(x-8)}$ × 9x
Reduce the fraction with x + 2
$\frac{1}{x-8}$ × 9x
Finally,, calculate the product to find your final answer.
$\frac{9x}{x-8}$
This means that the correct answer to your question is going to be option B.
Let me know if you have any further questions.
:)

3 0

3 years ago

Help me pleaseeee:A book sold 37,800 coples in its first month of release. Suppose this represents 9.3% of the number of copies

lys-0071 [83]

Answer:

406452

Step-by-step explanation:

Set up a proportion

9.3/37800=100/x

7 0

3 years ago

(a) How many different 7-place license plates are possible if the first 2 places are for letters and the other 5 for numbers?

Olegator [25]

Answer:

a) 67600000 possible plates

b) 19656000 possible plates where neither digit or letter are repeated

Step-by-step explanation:

The easiest way to solve this problem is seeing how many possibilities and there for each place in the license plate:

We have the following 7 places:

P1 - P2 - P3 - P4 - P5 - P6 - P7

The alphabet has 26 letters and there are 10 digits. So,

a) For each position there are the following possibilites

26 - 26 - 10 - 10 - 10 - 10 - 10

So in all, there are, 26*26*10*10*10*10*10 = 67600000 possible plates

b) Let's do the possibilites for each position again. Now, no letter or number can be repeated, so.

P1 is still 26. Now for P2, the letter in position P1 cannot be repeated, so there are only 25 possibilies. As for the digits, for P3, the first digit, there are still 10 possibilities. For P4, there are 9, since the digit in P3 cannot be repeated. For P5 there are 8, since P3 and P4 cannot be repeated... So there are the following number of possibilities:

26-25-10-9-8-7-6

In all, there are 26*25*10*9*8*7*6 = 19656000 possible plates where neither digit or letter are repeated.

5 0

3 years ago