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natali 33 [55]
3 years ago
8

Solve: If Sally can walk 1/3 of a mile in 1/4 of an hour. How far will she walk 2 1/2 hours?

Mathematics
2 answers:
Daniel [21]3 years ago
8 0
The answer is 3 and 1/3 miles
STALIN [3.7K]3 years ago
5 0

Answer:

3 1/3 miles

Step-by-step explanation:

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The time to assemble the first unit on a production line is 8 hours. The learning rate is 0.81. Approximately how long will it t
pochemuha

Answer:

4.428 hours

Step-by-step explanation:

If the learning rate is 0.81, the slope of the learning curve is:

b=\frac{ln(0.81)}{ln(2)} \\b=-0.304

The time it takes to produce the n-th unit is:

T_n=T_1*n^b

If T1 = 8 hours, the time required to produce the seventh unit will be:

T_n=8*7^{-0.304}\\T_n=4.428\ hours

It will take roughly 4.428 hours.

3 0
3 years ago
An urn contains 17 white balls and 18 red balls. A sample of four balls is selected at random from the urn. What is the probabil
erik [133]

Answer:

c. 0.3974

Step-by-step explanation:

Given;

number of white balls, W = 17

number of red balls, R = 18

Total number of balls, T = 35

The number of ways the event will occur is given by

= P(2 whites) and P(2 reds)

= P(2whites) x P(2 reds)

= 17C2 x 18C2

= 136 x 153

= 20,808

The total number of possible outcome

= 35C4

= 52,360

The probability = 20,808 / 52,360

                          = 0.3974

The correct option is "C"

6 0
3 years ago
Can someone please help?
Alecsey [184]

Answer:

73 degrees

Step-by-step explanation:

6 0
3 years ago
Write as a product of two polynomials.<br> (x-y)^2-a(y-x)
11Alexandr11 [23.1K]

Answer:

(x-y) (a+x-y)

Step-by-step explanation:

(y-x)=-(x-y)

-a(y-x) = a(x-y)

(x-y)^2 = (x-y)(x-y)

(x-y)(a + x - y)

3 0
3 years ago
The sum of two numbers is 854. One of the numbers is 447. What is the other number?
charle [14.2K]

Answer:

the answer to the other number is 407

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
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