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11Alexandr11 [23.1K]
3 years ago
12

To use your debit card at a pay-at-the-pump system, you have to enter a four-digit personal identification number (PIN). How man

y different possible PINs can be formed on the 10-digit keypad? (Repetition is not allowed.)
Mathematics
1 answer:
nydimaria [60]3 years ago
5 0
Answer is 5040
10×9×8×7=5040
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A tree casts a shadow that is 8 feet long, a 3 foot mailbox cast a shadow that is 5 feet long. how tall is the tree?
madam [21]
Set up two fractions:
8/x and 3/5
Set them equal to each other and cross multiply to get:
8*5 = 3x
40 = 3x
13.3 = x or 13 and 1/3 feet tall. 
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3 years ago
A cooler has 6 Dr Peppers, 5 Diet Cokes, 9 Cokes, and 4 Sprites in it.
liq [111]

Answer:

A

Step-by-step explanation:

6/24 multiplied by 5/24

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2 years ago
Angela had $22.70 to spend on groceries. After buying 8 pineapples, she had $3.50 left. If each pineapple was the same price, wh
sesenic [268]

Answer:

$2.40

Step-by-step explanation:

First, you would do 22.70 minus 3.50, to get 19.20.

Then, you would divide 19.20 by 8, to get 2.4.

So, if each pineapple was the same price, each pineapple would be $2.40.

3 0
2 years ago
7. During a sale, the price of a pair of running shoes was marked down from $89.95 to $75.00. What was the
shutvik [7]

Answer:

16.6%

Step-by-step explanation:

(75/89.95)*100=83.37....

100-83.37...=16.62...

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7 0
2 years ago
There are currently 17 frogs in a (large) pond. The frog population grows exponentially, tripling every 6 days. How long will it
Tema [17]

Answer:

t=11,11 days

Step-by-step explanation:

F=frogs poblation, t=time, be the variables dF/dt = KF, dF/F=Kdt, integrating \int\limits^ {} \, dF/F =K\int\limits^ {} \, dt⇒ LnF=Kt+c,F=ce^{Kt}; Knowing t=0, F=17 and t=6 F=51 (tripling every 6 days (17*3)), F=ce^{K0} = F=c=17; F=17e^{6K} =51⇒e^{6K} =51/17; K6=ln\frac{51}{17} ; K=ln\frac{51}{17}/6=0.183, so F=17e^{0,183t}, now if F=130, t=? we have:

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8 0
3 years ago
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