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wlad13 [49]
2 years ago
9

Ann is mailing packages. Each small package costs her $2.10 to send. Each large package costs her $3.30. How much will it cost h

er to send 6 small packages
and 7 large packages?
Mathematics
2 answers:
Liula [17]2 years ago
4 0

Answer:

$35.76

Step-by-step explanation:

12.60

23.10

--------

35.76

astraxan [27]2 years ago
3 0

Answer:

$35.70

Step-by-step explanation:

small package: 2.10×6=12.60

large package: 3.30×7=23.10

total: 23.10+12.60=35.70

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The set of life spans of an appliance is normally distributed with a mean mc013-1.jpg = 48 months and a standard deviation mc013
elena55 [62]
The life span would be 24 months.

The formula for z-scores is:
z=\frac{X-\mu}{\sigma}

Using the information we're given we have:
-3=\frac{X-48}{8}

Multiply both sides by 8 to cancel it:
-3(8) = ((X-48)/8)*8
-24 = X-48

Add 48 to both sides:
-24+48 = X-48+48
24=X
7 0
3 years ago
Read 2 more answers
What is the solution to this equation x/5= -20 A. x=4 B. x=100 C. x=-4 D. x=-100
stepladder [879]

Answer:

D. X= -100

Step-by-step explanation:

5×x/5=5×(-20) (reduce and multiply)

X= -100

4 0
2 years ago
If a set of data is in the direction of a downward line, which of the following would be the best model for this data?
Ahat [919]
I'm not too sure about this, but I feel that it's a linear regression. A quadratic one eventually reverses direction, and an exponential one levels off and stops decreasing.
5 0
3 years ago
The sales department wants to place an order for 253,625 third grade math books for a region. Once the order is given, there is
Vladimir [108]

If the sales department wants to place an order for 253,625 third grade math books for a region. How can the sale manager estimate the number of math books to be sure that there are more then enough is: The manager should carryout survey based on the number of people per class and provide 25,362 books.

<h3></h3><h3>How the sale can manager estimate the number of math books </h3>

Since extra math's  books will be needed after giving out the available math's books.

Hence:

Additional maths books=10%× 253,625

Additional maths books=25,362 books

Based on the above calculation the manager should carryout survey based on the number of people per class and provide them with 25,362 books.

Therefore how can the sale manager estimate the number of math books to be sure that there are more then enough is that the manager should carryout survey based on the number of people per class and provide 25,362 books.

Learn more about How the sale can manager estimate the number of math books here:brainly.com/question/18558957

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6 0
2 years ago
Which expression has a value different from the others?
Alexxandr [17]

Answer:

I think B

Step-by-step explanation:

A. -108+105

-3

B. 9.9+(12.9)

22.8

C. -7 2/9 -(-4 2/9)

-3

D. 637 - 641

-4

Is the last one written wrong because if that one is 637-640 or 638-641 than it would equal -3. Then the answer would be B.

5 0
2 years ago
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