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3 years ago

15

Show work when multiplying 3.9×5.3

2 answers:

frozen [14]3 years ago

7 0

I use the expansion distributive thing

remember a(b+c)=ab+ac
3.9=4-0.1
3.9 times 5.3=
(4-0.1) times 5.3=
5.3(4-0.1)=
5.3(4)+5.3(-0.1)=
(5+0.3)4+5.3(-0.1)=
20+1.2-0.52=
20+0.68=
20.68
taht's one way

horrorfan [7]3 years ago

4 0

3.9 x 5.3 = 20.67

im not really sure how i would show my work while typing, but if you really need to see it i could insert a picture, let me know.

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Feliz [49]

Answer:

$10\sqrt{5}$

Step-by-step explanation:

In this problem, we are given expression in exponent form and we have to simplify the expression.

The expression is $[4(5^{3} )]^{\frac{1}{2} }$

Now, we know that $5^{3} = 5 \times 5 \times 5 = 125$

So, $4(5^{3} ) = 4 \times 125 = 500$

Now, 500 can be written as 100 × 5 = 10² × 5

Therefore, $[4(5^{3} )]^{\frac{1}{2} } = (500)^{\frac{1}{2} } = 10\sqrt{5}$ {Since 500 = 100 × 5 = 10² × 5} (Answer)

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3 years ago

Simplify using only POSITIVE exponents:

pickupchik [31]

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Dividing exponents of the same base: $x^m\div x^n=x^{m-n}$
Powering a power to a power: $(x^m)^n=x^{m*n}$
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<h2>2.</h2>

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4 years ago

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Julli [10]

Answer:

<h3>Attachment</h3>

Step-by-step explanation:

Convert to the slope-intercept form (<em>y = mx + b</em>):

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Angelina_Jolie [31]

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