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Alona [7]
3 years ago
15

a rectangle has an area of 102 cm2. the length of the rectangle is 17 cm. what is the perimeter of the rectangle?

Mathematics
1 answer:
Kruka [31]3 years ago
4 0
Area = length *width 

102 = 17*w

w = 102/17 = 6 

l=17
w=6

perimeter = 2l +2w
p = 2(l+w)
p=2*23

p = 46 cm 

hope helped 
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I'm genuinely lost in any problems like this and my teachers are no help, I need help doing exponents in general, everything to
Stolb23 [73]

Answer:

See below.

Step-by-step explanation:

4)

So we have the expression:

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We can use the power of a product property, where:

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So:

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For the left, -6 squared is the same as -6 times -6. This equals positive 36.

For the right, we can use the power of a power property. The property says that:

(a^n)^k=a^{nk}

So:

(n^{-3})^2=n^{(-3)(2)}\\=n^{-6}

So, all together, we have:

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6)

We have the expression:

-\frac{3x^0}{x^4}

First, note that anything to the zeroth power (except for 0) is 1, thus, x^0 is also 1. Simplify:

=-\frac{3}{x^4}

And that's the simplest we can do :)

Notes for 6)

We <em>can</em> put the x^4 to the numerator. Recall that when you put an exponent to opposite side, you put a negative. In other words:

x^n=\frac{1}{x^{-n}}

And vice versa:

\frac{1}{x^{-n}}=x^n

So, we can write the above as:

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However, traditionally, we want only positive exponents, so this wouldn't be correct.

4 0
3 years ago
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The length of a rectangular frame is 5 cm more than the width. The area inside the frame is 66 square cm. Find the width of the
Ratling [72]
For this case we have that the area is given by:
 A = (w) * (l)
 Where,
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 Rewriting
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the width of the frame is:
 
w = 6 cm
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Which expression shows the result of applying the distributive property to 14(−3n+32) ?
shusha [124]

Answer:

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Answer:

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Step-by-step explanation:

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