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3 years ago

14

A book sold 41,600 copies in its first month of release. Suppose this represents 9.8% of the number of copies sold to date. How

many copies have been sold to date?
Round your answer to the nearest whole number.

help asappppppp!!

1 answer:

oksano4ka [1.4K]3 years ago

7 0

Answer:

480,247

Step-by-step explanation:

0.081 x = 38,900, so x (# sold to date) = 480,247 (rounded)

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Lorico [155]

Let's to the first example:

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Ussing the formula of basckara

a = 1
b = 9
c = 20

Delta = b^2 - 4ac

Delta = 9^2 - 4.(1).(20)

Delta = 81 - 80

Delta = 1

x = [ -b +/- √(Delta) ]/2a

Replacing the data:

x = [ -9 +/- √1 ]/2

x' = (-9 -1)/2 <=> - 5

Or

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Already the second example:

f(x) = x^2 -4x -60

Ussing the formula of basckara again

a = 1
b = -4
c = -60

Delta = b^2 -4ac

Delta = (-4)^2 -4.(1).(-60)

Delta = 16 + 240

Delta = 256

Then, following:

x = [ -b +/- √(Delta)]/2a

Replacing the information

x = [ -(-4) +/- √256 ]/2

x = [ 4 +/- 16]/2

x' = (4-16)/2 <=> -6

Or

x" = (4+16)/2 <=> 10
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Now we are going to the 3 example

x^2 + 24 = 14x

Isolating 14x , but changing the sinal positive to negative

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a = 1
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Delta = (-14)^2 -4.(1).(24)

Delta = 196 - 96

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x = [ -b +/- √Delta ]/2a

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To the last example will be the same thing.

f(x) = x^2 - x -72

a = 1
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Delta = b^2 -4ac

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Then we are going to stay:

x = [ -b +/- √Delta]/2a

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3 years ago

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Mumz [18]

<h3>Answer: 95 degrees</h3>

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Explanation:

I recommend drawing it out to see what's going on. See the drawing below.

In the diagram, both angles are in the northeast corner of their four-corner configurations. They are both congruent corresponding angles. So that's why the second angle is also 95 degrees.

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marshall27 [118]

Answer:

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anygoal [31]

Hey there!

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