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jekas [21]
2 years ago
11

Can somebody please help me with these? You don’t have to explain it I just need answers. Thank you so much :)

Mathematics
1 answer:
Elis [28]2 years ago
8 0

Answer:

Step-by-step explanation:

23. 1/x^7

24.-1/a^2

26. x^12

27. x^3y^15

29. 1/(4c^2d^6)

30. x^6y^3

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Question is in the picture
MrRa [10]

Answer:

B)  12.5 ft

Step-by-step explanation:

set up a proportion of inches/feet equals inches/feet

let 'h' = height of sign

5.4/18 = 3.75/h

cross-multiply:

5.4h = 67.5

h = 12.5

5 0
2 years ago
Carly went shopping and bought a pair of pants for $25.00. She also purchased a shirt for $35.00, They were on sale for 20% off.
Anna007 [38]

Answer:

The answer is $12

Step-by-step explanation:

Multiply each price by 20% (0r .2) then add them. OR

Add each price then multiply them by 20$ (or .2)

Hoped this helped!

7 0
2 years ago
How do you find the measure of ECF?
tigry1 [53]

Answer:

37°

Step-by-step explanation:

∠ECF= ∠ACG

∠ACG= 90° - ∠GAC= 90° - 53°= 37°

6 0
2 years ago
P(A)* P(B)≠ p(AnB)<br><br> Why does it contain a not equal to sign
RoseWind [281]

Answer:

P(A|D) and P(D|A) from the table above are not equal because P(A|D) =  and P(D|A) =

Step-by-step explanation:

Conditional probability is the probability of one event occurring  with some relationship to one or more other events

.

P(A|D) is called the "Conditional Probability" of A given D

P(D|A) is called the "Conditional Probability" of D given A

The formula for conditional probability of P(A|D) = P(D∩A)/P(D)

The formula for conditional probability of P(D|A) = P(A∩D)/P(A)

The table

              ↓         ↓       ↓

           :  C     :   D    : Total

→ A      :  6     :    2    :   8

→ B      :  1      :    8    :   9

→Total :  7     :    10  :  17

∵ P(A|D) = P(D∩A)/P(D)

∵ P(D∩A) = 2 ⇒ the common of D and A

- P(D) means total of column D

∵ P(D) = 10

∴ P(A|D) =

∵ P(D|A) = P(A∩D)/P(A)

∵ P(A∩D) = 2 ⇒ the common of A and D

- P(A) means total of row A

∵ P(A) = 8

∴ P(D|A) =

∵ P(A|D) =

∵ P(D|A) =

∵   ≠  

∴ P(A|D) and P(D|A) from the table above are not equal

Step-by-step explanation:

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2 years ago
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