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lana [24]
3 years ago
14

Draw an area model and then solve using the standard algorithm

Mathematics
1 answer:
Serggg [28]3 years ago
4 0

Answer:

well if your asking for 21 x 23 its 483

Step-by-step explanation:

Hi if the awnser for the equation is not the anwser your looking for please comment so I can help you with something else and here how you get the anwser you can break 21 and 23 down so 20 +1 and 20+ 3 then these steps or array.

20x20=400

20x1=20

20x3=60

3x1=3

Now add those numbers together you get 483

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The number of carbon atoms in a fossil is given by the function y= 5100(0.95)^x where x represents the number of years since bei
natita [175]

Answer:

This is a guess!

When looking at the given equation I can not help but think of compound interest. So I am going to convert this into that format.

'~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Within the context of financial interest:

Looking for:

P

(

1

−

x

)

n

Where P is the principle sum,

x

is the interest and n is the number of interest cycles (annual)

'~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Given:

y

=

5100

(

0.95

)

x

But

0.95

=

1

−

0.05

so we have

y

=

5100

(

1

−

0.05

)

x

But

.

0.05

=

5

100

So we have

y

=

5100

(

1

−

5

100

)

x

Thus the percentage change each year is

−

5

%

Step-by-step explanation:

8 0
3 years ago
Sarah paid a food bill of $13.74 with a $20 bill. How much change was she owed? A. $6.74 B. $5.26 C. $6.26 D. $33.74
zhenek [66]
Change = $20 - $13.74 = $6.26
3 0
3 years ago
Read 2 more answers
Write an expression that is equivalent to 3y − 9.
dybincka [34]

Answer:

3(y-3)

Step-by-step explanation:

just factor out the greatest common factor

7 0
3 years ago
these are all seperate but im taking an exam for math and im stuck. the last two pictures go together! (the triangle and chart)
Alex787 [66]

Answer:

A 56

C

Right triangle

No,No,No,Yes

Step-by-step explanation:

180-124=56

sin a=sideopposite/hypotnuse

8/17

cos a= side adjecent/hyptnuse

15/17

7 0
2 years ago
Find the slope of<br> (14, 8) and (7, -6)
maksim [4K]

Answer:

The Slope = 2

Explanation:

Slope : Δy/Δx = 2/1 = 2

5 0
3 years ago
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