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seropon [69]
3 years ago
13

What is the value of the power a if 5a=1/125

Mathematics
1 answer:
tiny-mole [99]3 years ago
7 0

Answer:

A = 1/625 or 0.0016

Step-by-step explanation:

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One member of the debate team is going to be chosen president. each member is equally likely to be chosen. the probability that
inessss [21]
Let
x-------> <span>the probability that a boy is chosen
B------> </span>number of boys in the debate team
G------> number of girls in the debate team<span>

we know that
B+G=20-----> G=20-B-----> equation 1
</span>probability that a boy is chosen=number of boys in the debate team/total of people
so
x=B/20-------> equation 2

t<span>he probability that a girl is chosen is 2/3 the probability that a boy is chosen
</span>probability that a girl is chosen=(2/3)*x
probability that a girl is chosen=G/20
(2/3)*x=G/20-----> equation 3
substitute equation 1 in equation 3
(2/3)*x=[20-B]/20----> equation 4

resolve the equations system
x=B/20
(2/3)*x=[20-B]/20

using a graph tool
see the attached figure
the solution is
x=0.6
B=12
G=20-12-----> G=8

number of boys in the debate team is 12
number of girls in the debate team is 8
the probability that a boy is chosen is 0.6 ----> 60%
the probability that a girl is chosen is 0.6*(2/3)----> 0.4---> 40%

the answer is
number of girls in the debate team is 8

7 0
3 years ago
Find four numbers that are evenly divisible by both 2 and 9
Hatshy [7]

Answer:

18

36

72

144

Step-by-step explanation:

For numbers to be divisible by 2 they must end in an even number

For numbers to be divisible by 9 the sum of the digits must be divisible by 9

3 0
2 years ago
Make the b the subject of b2 - 4ac = x
devlian [24]
Solve for b.
b^2= x+4ac
So b=sq root of x+4ac
7 0
3 years ago
2y+4x=12 in slope intercept form <br><br> 2x=y=-10 in slope intercept form
madam [21]

Answer:

y = -2x +6

second equation is incorrect.

because there are 2 equal signs in that equation

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Which of the following expressions represents the phrase "19 less than a number"?
kipiarov [429]
A, because n is having 19 taken from it
5 0
3 years ago
Read 2 more answers
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