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lbvjy [14]
3 years ago
7

How many possible combinations are there on a 4 digit lock using numbers 0-9, if duplicate numbers are not allowed?

Mathematics
1 answer:
solmaris [256]3 years ago
4 0
0,1,2,3,4,5,6,7,8,9 = 10 possible numbers
No repeats so every time you use one subtract it from the amount of numbers you have.
10x9x8x7=5,040
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In a grocery store a $21 case of toilet paper is labeled, "Get a 20% discount." What is the discount? What is the sale price of
arsen [322]

Hi There!

Step-by-step explanation and Answer:

21 * 0.2 = $4.2 (Discount)

21 - 4.2 = $16.8 (Sale Price)

Hope This Helps :)

5 0
4 years ago
Read 2 more answers
Kito makes on online purchase of a guitar case for $39.99, a tuner for $24.99 and picks for $26.99. Taxes are 6% of the total pu
maria [59]

Answer:

a. Kito has been billed correctly

Step-by-step explanation:

We simply need to check Kito's work to see if his price is accurate.

First, we can add the prices together to find the price before the sales tax is applied:  39.99 + 24.99 + 26.99 = $91.97

We can use this formula to figure out the total cost, C, after the sales tax, t is added:

C = l + (l * (t / 100)), where l = the price before applying the sales tax

C = 91.97 + (91.97 * (6 / 100)) = 97.4882 = $97.49

We know that the total cost lies between the 50 and 100 and that Kito chose the express shipping.  Thus we add:  97.49 + 8.20 = $105.69.

If we did not round before, we would still get the same answer when rounding:  97.4882 + 8.20 = 105.6882 = $105.69

4 0
3 years ago
Graph the image of square CDEF after a dilation with a scale factor of 2, centered at the
Likurg_2 [28]

Answer:

Image attached

Step-by-step explanation:

Origin looks to be (0, -1), so move each point out by 2

4 0
3 years ago
Need help with 12 plz
Flura [38]

Answer:

see below    PLEASE GIVE BRAINLIEST

Step-by-step explanation:

HOUSE  - LIBRARY                            = 1 3/5 MILES

LIBRARY - MALL - KYLE'S HOUSE   =  1 1/3 + 4/5 = 4/3 + 4/5 =

                                                                    20/15 + 12/15 = 32/15 = 2 2/15 miles



8 0
3 years ago
if a right circular cone has a volume of 15 cubic ft and a radius of 3 ft, what is the height of the cone?
Setler79 [48]
Volume of cone=1/3 times height times pir^2
v=15
r=3
15=1/3 hpi3^2
15=1/3hpi9
15=9/3hpi
15=3hpi
divide 3
5=hpi
h=5/pi
pi=aprox 3.14
5/3.14=1.59

1.59 ft
4 0
3 years ago
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