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BaLLatris [955]

3 years ago

6

In a factory, a manager tests 250 products and finds defects in 7 of them. How many defects are likely going to be in a 10,000 u

nit order.
(7th grade)

1 answer:

Natalka [10]3 years ago

7 0

Answer:

280

Step-by-step explanation:

first make a proportion. 7 over 250= x over 10,000. cross multiply to get 250x=70,000. 70,000 divided by 250 which gets you 280.

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Drupady [299]

I hope this is right but:
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3 years ago

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3 years ago

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trapecia [35]

Answer:

<em>y = - cos ( </em> $\frac{3}{4}$ <em> x + </em> $\frac{\pi }{4}$ <em> ) </em>

Step-by-step explanation:

y = A cos ( Bx + C) + D

Vertical shift D = 0

A = - 1

Compression / Stretching B

Period of given function is $\frac{8\pi }{3}$

Period of cos x is 2π

$\frac{8\pi }{3}$ = $\frac{2\pi }{B}$ ⇒ B = $\frac{3}{4}$

Horizontal shift is C ÷ B

Horizontal shift of given function is $\frac{\pi }{3}$

$\frac{\pi }{3}$ = C ÷ $\frac{3}{4}$ ⇒ C = $\frac{\pi }{4}$

So, the equation of given function is

<em>y = - cos ( </em> $\frac{3}{4}$ <em> x + </em> $\frac{\pi }{4}$ <em> ) </em>

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