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stiks02 [169]
3 years ago
14

It costs $2.57 to buy a box of crackers. Which of the following equation shows the amount of money needed, x, to buy m boxes of

crackers
A. M= 2.57x
B. X= 2.57m
C. X= 2.57 + m
D. M= 2.57 + x
Mathematics
1 answer:
liraira [26]3 years ago
8 0
The answer will be B. X= 2.57m. Hope it help!
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The physical plant at the main campus of a large state university recieves daily requests to replace florecent lightbulbs. The d
jek_recluse [69]

Answer:

50%

Step-by-step explanation:

68-95-99.7 rule

68% of all values lie within the 1 standard deviation from mean (\mu-\sigma,\mu+\sigma)

95% of all values lie within the 1 standard deviation from mean  (\mu-1\sigma,\mu+1\sigma)

99.7% of all values lie within the 1 standard deviation from mean  (\mu-3\sigma,\mu+3\sigma)

The distribution of the number of daily requests is bell-shaped and has a mean of 55 and a standard deviation of 4.

\mu = 55\\\sigma = 4

68% of all values lie within the 1 standard deviation from mean (\mu-\sigma,\mu+\sigma) = (55-4,55+4)= (51,59)

95% of all values lie within the 2 standard deviation from mean  (\mu-1\sigma,\mu+1\sigma)= (55-2(4),55+2(4))= (47,63)

99.7% of all values lie within the 3 standard deviation from mean  (\mu-3\sigma,\mu+3\sigma)= (55-3(4),55+3(4))= (43,67)

Refer the attached figure

P(43<x<55)=2.5%+13.5%+34%=50%

Hence The approximate percentage of light bulb replacement requests numbering between 43 and 55 is 50%

4 0
3 years ago
What is the common multipule of 75 and 1000
Zanzabum
<h3>♫ - - - - - - - - - - - - - - - ~Hello There!~ - - - - - - - - - - - - - - - ♫</h3>

➷  I'm assuming you are asking for the lowest common multiple

[if not, let me know]

The answer would be 3000

<h3><u>✽</u></h3>

➶ Hope This Helps You!

➶ Good Luck (:

➶ Have A Great Day ^-^

↬ ʜᴀɴɴᴀʜ ♡

6 0
2 years ago
Helpppppp show your work
Veronika [31]

(-3²)-2(-3-4)-(-1³)

=9-2(-7)+1

=9+14+1

=24

<em>Hope it helps!</em>

6 0
1 year ago
Read 2 more answers
75 is 128% of what number
Oksana_A [137]

\bold \pink{let \: the \: number \: be \: x}

\mathsf{128\% \times x = 75}

\\  \\  \frac{128}{100}  \times x = 75 \\  \\ x =  \frac{75}{1}  \times  \frac{100}{128}   \\ \\ x =  \frac{7500}{128}

\boxed{x = 58.59375}

75 is 128% of 58.59375

5 0
2 years ago
Read 2 more answers
Marc baked brownies in the brownie pan sowed below. Each day,he is going to 20 square centimeters of brownie from the pan.
lesya692 [45]

Answer:

There is no image below

Step-by-step explanation:

5 0
2 years ago
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