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jarptica [38.1K]

3 years ago

5

When Ellen unpacked the dishes after her move from another state she found out that 3 out of 20 dishes were broken.What was the

probability of an individual dish was broken?

1 answer:

Alina [70]3 years ago

5 0

Answer:

3/20

Step-by-step explanation:

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2 and 3/8 minus 1/4 times 1/8

sveta [45]

Answer:

2 11/32 or 75/32

Step-by-step explanation:

2 3/8 - 1/4 x 1/8= 2 3/8 - 1/32= 19/8- 1/32= 76/32 - 1/32= 75/32= 2 11/32

3 0

4 years ago

The temperature of a cup of coffee varies according to Newton's Law of Cooling: dT dt equals negative k times the quantity T min

Maslowich

Answer:

67.3°C

Step-by-step explanation:

A = 25, T(0) = 100, T(1) = 90, find T(4)

dT/dt = -k(T - A)

d(T - A)/dt = -k(T - A)

d(T - A)/(T - A) = -k dt

ln(T - A) = lnC - kt

$T(t) -A=Ce^{-kt}\\T(t) = A + Ce^{-kt} = 25 + Ce^{-kt}\\T(0) = 25 + C = 100\\C=75$

$T(t) = 25 + 75e^{-kt}\\T(1) = 25 + 75e^{-k} = 90\\75e^{-k} = 65\\e^{-k} = \frac{65}{75}, k = ln\frac{75}{65} = 0.1431\\T(t) = 25+75e^{-0.1431t}\\T(4) = 25+75e^{-0.1431\times4} = 67.3$

4 0

3 years ago

Combinatia pet store has 88 puppies, including 33 poodles, 22 terriers, and 33 retrievers. if rebecka selects one puppy at r

lbvjy [14]

Total dogs 88
Total poodle = 33

P(Poodle, then Poodle) = (33/88)(33/88) = 9/64

Answer: 9/64

7 0

4 years ago

What is 16 to the power of 3/2 ????<br> Please help !!!!!!!!

aleksandrvk [35]

64. Plug into the calulator (16)^3/2 make sure you put paraenthese around 16

5 0

3 years ago

eight freinds share 64 tickets to the school carnival. each freind has the same number of tickets.how many tickets dose each fre

neonofarm [45]

Answer:

8

Step-by-step explanation:

64/8=8

If there are 8 friends and they share 64 tickets they each get 8 tickets to have the same amount.

6 0

2 years ago

Read 2 more answers