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Licemer1 [7]
4 years ago
12

What is the answer??

Mathematics
1 answer:
masha68 [24]4 years ago
6 0

Can’t see the question clearly

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Bartering was an early way that people _____.
jarptica [38.1K]

Answer:

#2

Step-by-step explanation:

N/A

6 0
3 years ago
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Ddrrrmkkkjuuhuigyygyuhuujiiiijjj
Irina18 [472]

Answer:

The answer is yeahhhhhh lol

Step-by-step explanation:

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Simplify each expression.
Elina [12.6K]

Step-by-step explanation:

remember that x^-n means 1/(x^n).

x^a × x^b = x^(a+b)

x^a / x^b = x^(a-b)

(x^a)^b = x^(a×b)

(x×y)^n = x^n × y^n

so,

a^2 / a^-2 = a^(2 - -2) = a^4

and

b^-3 / b^2 = b^(-3 - 2) = b^-5 = 1/(b^5)

that means we have then :

(a^4 × b^-5)^2 = (a^4)^2 × (b^-5)^2 = a^8 × b^-10 =

= a^8 / b^10 = a⁸/b¹⁰

5 0
3 years ago
A group of students at a high school took a standardized test. The number of students who passed or failed the exam is broken do
Anuta_ua [19.1K]

Answer:

Since P(male)xP(fail) = 0.0549 and and P(male and fail) = 0.0773, the two results are different, so the events are not independent.

Step-by-step explanation:

Independent events:

Two events, A and B are independent, if:

P(A \cap B) = P(A)P(B)

Probability of male:

58 + 14 = 72 males out of 58 + 14 + 98 + 11 = 181

So

P(male) = 72/181 = 0.3978

Probability of failling:

14 + 11 = 25 students fail out of 181. So

P(fail) = 28/181 = 0.1381

Multiplitication of male and failling:

0.3978*0.1381 = 0.0549

Probability of being male and failing:

14 out of 181. So

14/181 = 0.0773

Different probabilities, so not independent.

Since P(male)xP(fail) = 0.0549 and and P(male and fail) = 0.0773, the two results are different, so the events are not independent.

5 0
3 years ago
Find the degree measures of the angle whose cosine is −√3/2.
Andreyy89
Given that the cosine of an angle is <span>−√3/2, to solve the value of the angle. use the function inverse cosine or arccosine. so the value of the angle
A = arccosine ( </span><span>−√3/2 )
A = 150 degrees
so the answer is D. </span>
<span>150 +n times 360 and 210 +n times 360

</span>
8 0
3 years ago
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