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2 years ago

The Central Duplicating Office Copies 48 pounds of paper a day. How many pounds do they copy each hour?

Mathematics

1 answer:

lawyer [7]2 years ago

7 0

Answer:

2 pounds per hour

Step-by-step explanation:

there is 24 hours in a day so 48 divided by 24 = 2

So they make 2 pounds per hour

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What is the equation for the sum of half a number and two-thirds of the number is less than 14?

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1/2x+2/3x<14

3/6x+4/6x<14

7/6x<84/6

x<504/42

x<12

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2 years ago

At a grocery store, Mary bought five cans of corn and paid $1.50. Larry bought 8 cans of corn and paid $2.40. What is the consta

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2 years ago

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What is forty five percent of one-hundred forty five

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Answer:

65.25

Step-by-step explanation:

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3 years ago

Previous Question Question 14 of 20 Next Question A company randomly surveys 15 VIP customers and records their customer satisfa

Ann [662]

Answer:

71.4699, 81.7301.

Step-by-step explanation:

So, the following are the scores: 74

$Let,\;the\;total\;sum\;of\;the\;scores\;be:\sum x =1149$

$Then,\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\sum x^2=89795$

The length of the score : 15

Then, let the size of the scores be n : 15.

Then, we have to find the mean.

$\bar{x}=\frac{\sum x}{n}$

$=\frac{1149}{15}=76.6$

$Then,\;we\;have\;to\;find\;standard\;deviation:S=\sqrt{\frac{\sum x^2-n.(\bar{x})^2}{n-1} }$

$=\sqrt{\frac{89795-15\times(76.6)^2}{15-1} }=11.2808$

$The\;degree\;of\;freedom:n-1=14$

$So,\;the\;significant\;level:\alpha=1-0.90=0.10$

$and\;the\;critical\;value:t_{\frac{\alpha}{2} }=1.7613$

$Finally:\\=\bar{x}\;\pm\;t_{\frac{\alpha}{2} }\;\frac{S}{\sqrt{n} }\\=(71.4699, 81.7301)$

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3 years ago

Whats 0.089 in scientific notation

Alex787 [66]

$0.089 = 8.9 \times 10^{-2}$

7 0

2 years ago