3 years ago

Andy buys a 75 cent juice box using only quarters and nickels. show the amount he spent in two ways.

Mathematics

1 answer:

KonstantinChe [14]3 years ago

3 0

Imean 27 is the right awnser

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The quality control manager of a light bulb factory needs to estimate the average life of a large shipment of light bulbs. The p

eimsori [14]

Answer:

b) yes

The manufacturer has the right to state that the light bulbs last on average 400 hours

Step-by-step explanation:

Explanation:-

Given sample size 'n' = 64

Given standard deviation of the Population (σ)=100

Mean of the sample (x⁻) = 350 hours

95% of confidence interval is determined by

$(x^{-} -Z_{0.95} \frac{S.D}{\sqrt{n} } , x^{-} +Z_{0.95} \frac{S.D}{\sqrt{n} } )$

( $(350 -1.96 \frac{100}{\sqrt{64} } , 350+1.96\frac{100}{\sqrt{64} } )$

(350-24.5 , 350+24.5)

(325.5 , 374.5)

Conclusion:-

Yes

The manufacturer has the right to state that the light bulbs last on average 400 hours

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2 years ago

A horizontal force of 20.8 N is applied to move a 425-kg cart a distance 0.636 m

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A work applied on the cart = 20.8x0.636

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2 years ago

Daniel loved books and reads 14 pages in 6 minutes

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Answer:

???

Step-by-step explanation:

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3 years ago

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B)the LCM of three numbers is 24 and their G.C.D is 4. If two find the other number

kicyunya [14]

Step-by-step explanation:

because 6*4=24, so the G.C.D is 4 and the other number is 6

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3 years ago

Kerry’s grandmother, Mrs. Reynoso, is helping Kerry pay for guitar lessons. She has set up a special savings account to pay for

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Answer:

Month 5 is when it will be at $100

I hope this helps!

Step-by-step explanation:

x---0-----1-----2-----3----4-----5

y-300-260-220-180-140-100

y=40x+300

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