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2 years ago

Please help me, What is 640.31 written in expanded form?

Mathematics

2 answers:

Sophie [7]2 years ago

5 0

The top right one. 600+40+3/10+1/100

Stels [109]2 years ago

5 0

Answer:

640.31= 600+40+ 3/10 + 1/100

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Is -2.74 a rational number?

Zinaida [17]

Yes, i<span>n mathematics, a </span>rational number<span> is any </span>number<span>that can be expressed as the quotient or fraction p/q of two integers, a numerator p and a non-zero denominator q.</span>

5 0

4 years ago

Read 2 more answers

Which expression is equivalent to (16 x Superscript 8 Baseline y Superscript negative 12 Baseline) Superscript one-half?.

loris [4]

To solve the problem we must know the Basic Rules of Exponentiation.

<h2>Basic Rules of Exponentiation</h2>

$x^ax^b = x^{(a+b)}$
$\dfrac{x^a}{x^b} = x^{(a-b)}$
$(a^a)^b =x^{(a\times b)}$
$(xy)^a = x^ay^a$

$x^{\frac{3}{4}} = \sqrt[4]{x^3}= (\sqrt[3]{x})^4$

The solution of the expression is $\dfrac{4x^4}{y^6}$ .

<h2>Explanation</h2>

Given to us

$(16x^8y^{12})^{\frac{1}{2}}$

Solution

We know that 16 can be reduced to $2^4$ ,

$=(2^4x^8y^{12})^{\frac{1}{2}}$

Using identity $(xy)^a = x^ay^a$ ,

$=(2^4)^{\frac{1}{2}}(x^8)^{\frac{1}{2}}(y^{12})^{\frac{1}{2}}$

Using identity $(a^a)^b =x^{(a\times b)}$ ,

$=(2^{4\times \frac{1}{2}})\ (x^{8\times\frac{1}{2}})\ (y^{12\times{\frac{1}{2}}})$

Solving further

$=2^2x^4y^{-6}$

Using identity $\dfrac{x^a}{x^b} = x^{(a-b)}$ ,

$=\dfrac{2^2x^4}{y^6}$

$=\dfrac{4x^4}{y^6}$

Hence, the solution of the expression is $\dfrac{4x^4}{y^6}$ .

Learn more about Exponentiation:

brainly.com/question/2193820

8 0

2 years ago

4. Two cylinders have dimensions in the ratio of 2:3. The smaller cylinder has a surface area of 16 cm.

Zarrin [17]

Answer:

(cross multiply)

2:3

16:X

2X=16×3

2x=48

x=48÷2

x=24

8 0

3 years ago

Help please! i don't know what to do

Serhud [2]

I hope this helps you

9/9+18=x/x+10

9/27=x/x+10

1/3=x/x+10

3x=x+10

x=5

8 0

3 years ago

A garden has an area of 32 square feet what is the smallest possible perimeter

stepan [7]

Answer:

24 feet

Step-by-step explanation:

factors that produce an area of 32:

1x32 Would give a perimeter of 66

2x16 Would give a perimeter of 36

4x8 Would give a perimeter of 24

6 0

3 years ago