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Ede4ka [16]
3 years ago
6

Can anyone help my little sister with her math test please she gotta have it submitted by midnight tonight which is in like 2 ho

urs. Here's the question below!!

Mathematics
1 answer:
lesya [120]3 years ago
8 0

Answer:

A. 17

Step-by-step explanation:

As you take 1/8 + 1/6 = 7/24

then you can see its 7 over 24

hence you take 24 - 7 =17

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Fill in the blank. ___ x 9 = 45? Please
tia_tia [17]

Answer:

The correct answer is "5"

5 times 9 equals 45.

5 x 9 = 45

6 0
3 years ago
Read 2 more answers
X - 11 = 1 what is the value of x<br> Please help, thank you.
ladessa [460]

Answer:

x = 12

Step-by-step explanation:

1 + 11 = 12, so x = 12. hope this helps

8 0
2 years ago
Mrs. Adam measured the performance times of middle school orchestra 10 points
jenyasd209 [6]

Answer:

Un alambre de acero de 1.5 m se estira 2.0 mm con fuerza F. El diámetro del alambre de acero es 4.0 mm. El módulo de Young del acero es 2.0 x 1011 Nm-2. Determine la fuerza F aplicada sobre el alambre.

Step-by-step explanation:

4 0
2 years ago
What is the probability that all three cards are face cards when you do not replace each card before selecting the next card rou
Ipatiy [6.2K]
Define three events A,B,C such that
A = first card is a face card
B = second card is a face card (assuming event A happens)
C = third card is a face card (assuming events A & B happen)
No replacements are made

There are 3 face cards (J, K, Q) per suit. There are 4 suits. In total, there are 3*4 = 12 face cards out of 52 total
P(A) = probability that event A happens
P(A) = 12/52
P(A) = 3/13

After event A happens, we have 12-1 = 11 face cards out of 52-1 = 51 total
P(B) = 11/51

After B happens, we have 11-1 = 10 face cards out of 51-1 = 50 left over
P(C) = 10/50
P(C) = 1/5

Based on how the events A,B,C are set up, we can form this equation
P(A and B and C) = P(A)*P(B)*P(C)
P(A and B and C) = (3/13)*(11/51)*(1/5)
P(A and B and C) = 11/1105
P(A and B and C) = 0.00995475113122

Rounded to the nearest tenth, the answer is simply 0.0 which is a lousy answer in my opinion because it implies that the answer is truly 0 instead of something really small. Though to be fair, the result is very close to 0. A much better approach is to round to the nearest hundredth to get 0.01; though I would ask your teacher for clarification and guidance.

note: a probability of 0 means that the event is impossible to happen, yet it is not impossible to pull out three face cards in a row. Is it unlikely? Yes. Because the result is roughly 0.00995 which is a really small decimal close to 0. But it's not 0 itself. 

6 0
3 years ago
Potential customers arrive at a full-service, one-pump gas station at a Poisson rate of20 cars per hour. However, customers will
Sophie [7]

Answer:

a) 19/20

b) 1/20

Step-by-step explanation:

a) calculate the fraction of the attendants time will be spent servicing cars

l / L > 0 =  Ц / [ Ц -  λ ] = 20 --- ( 1 )

Ц (service )  = 15 hour

∴ λ ( arrival rate )  = 14.25

P = λ / Ц  = 14.25 / 15 = 0.95 = 19/20

<u>b) Fraction of potential customers lost </u>

Ls = P / ( 1 - P )

where ; P = 19/20

Ls ( fraction of potential customers lost ) = 19/20 / ( 1 - 19/20 )  = 19

hence proportion of customers lost = 1 - 19/20 = 0.05 = 1/20

8 0
3 years ago
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