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Dmitry [639]
3 years ago
9

The cost for a business to make greeting cards can be divided into one-time cost (e.g., a printing machine) and repeated costs (

e.g., ink and paper). Suppose the total cost to make 30 cards is $800, and the total cost to make 550 cards is $1,300. What is the total cost to make 1,000 cards? Round your answer to the nearest dollar.
I don't even know how to find the answer. Someone please help me.



A) 2,000

B) 2,200

C) 2,364

D) 2,667
Mathematics
1 answer:
finlep [7]3 years ago
8 0

Hello,

The cost for a business to make greeting cards can be divided into one-time cost (e.g., a printing machine) and repeated costs (e.g., ink and paper). Suppose the total cost to make 30 cards is $800, and the total cost to make 550 cards is $1,300. What is the total cost to make 1,000 cards? Round your answer to the nearest dollar.

Find: the total of 1 card!

800 / 30 = 2.666666... = 3

1,300 / 550 = 2.3636... = 2

Answer - A) 2,000

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Ostrovityanka [42]

Answer: 72.78% of the drivers are traveling between 70 and 80 miles per hour based on this distribution.

Step-by-step explanation:

Let X be a random variable that represents the speed of the drivers.

Given: population mean : M = 72 miles ,

Standard deviation: s= 3.2 miles

The probability that the drivers are traveling between 70 and 80 miles per hour based on this distribution:

P(70\leq X\leq 80)=P(\frac{70-72}{3.2}\leq \frac{X-M}{s}\leq\frac{80-72}{3.2})\\\\= P(-0.625\leq Z\leq 2.5)\ \ \ \ \ [Z=\frac{X-M}{s}]\\\\=P(Z\leq2.5)-P(Z\leq -0.625)\\\\\\ =0.9938-0.2660\ \ \ [\text{Using p-value calculator}]\\\\=0.7278

Hence, 72.78% of the drivers are traveling between 70 and 80 miles per hour based on this distribution.

3 0
3 years ago
Four students received the following grades on their math quizzes. Which student could use the mode to show that she is doing be
ElenaW [278]

Answer:

I guess Sofia is doing better than the other three students

6 0
3 years ago
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PLEASE HELP
kifflom [539]

\\ \sf\longmapsto \dfrac{x^2-1}{x^2+5x+4}\leqslant 0

  • Solving denominator

\\ \sf\longmapsto x^2+5x+4>0

\\ \sf\longmapsto x^2+4x+x+4>0

\\ \sf\longmapsto x(x+4)+1(x+4)>0

\\ \sf\longmapsto (x+4)(x+1)>0

\\ \sf\longmapsto x>-4\:or x>-1

  • Hence x\neq-1
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\\ \sf\longmapsto -4

5 0
3 years ago
Sorry i forgot how to do this....please help meeeee ;-;
Mariulka [41]

Answer:

98

Step-by-step explanation:

ABSOLUTE BRACKETS MEAN ABSOLUTE VALUE- this means that negatives will come out as positives since their absolute values are the same. So |-9| is just 9.

|-81-17| (apply the rule I just gave you)

|81+17|

98

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If i had 12$ but I spent 2 how much would I have left​
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The answer for this question would be 10

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