Start by mult. both 0.4 and 5.12 by 100. What is 40 divided by 512?

___.078_______________
512 / 40.000
3584
-----------
4160
4096
---------
64 and so on. Calculator answer is 0.078125.

3 0

4 years ago

Simplify: 7!<br> 5,040<br> 40,320<br> 7<br> 720

Arturiano [62]

5040, I looked up the factorial of 7

8 0

3 years ago

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A carpenter is assigned the job of expanding a rectangular deck where the width is one-fourth the length. the length of the deck

anzhelika [568]

Alright, lets get started.

Suppose the original deck size: width = x feet

the width is one-fourth the length given in question means length = 4 x feet

Means the originally area = $x * 4 x = 4 x^{2}$

Now the dimensions are changed.

New dimensions, width = (x + 6)

new length = (4x+10)

So, new area will be = $(x+6) * (4x+10) = 4x^{2} + 10 x + 24 x + 60 = 4x^{2} + 34 x + 60$

the area of the new rectangular deck is 128 ft2 larger than the area of the original deck, means

$4x^{2} + 128= 4x^{2} + 34 x + 60$

Subtracting $4x^{2}$ from both sides

$128 = 34 x + 60$

Subtracting 60 from both sides

$128 - 60 = 34 x + 60 - 60$

$68 = 34 x$

Dividing 34 in both sides

$\frac{68}{34} = \frac{34 x }{34}$

$x = 2$

Means width = 2 feet

Length would be = 4 time width = 4 * 2 = 8 feet

Means dimension of original deck would be = 2 feet and 8 feet :Answer

Hope it will help :)

8 0

4 years ago

Your new cell phone plan charges $50 per month for 400 minutes of talk time. The plan charges $0.10 for each additional minute y

Aleonysh [2.5K]

50+.10(50)=x
50+5=x
55=x
B is the answer

8 0

3 years ago

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