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NNADVOKAT [17]
3 years ago
9

Which equation is an identity.

Mathematics
1 answer:
Verizon [17]3 years ago
6 0
for 1 the equation is an identity is A. number 2 the equation has no solution is D.
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Who’s good at algebra & can answer these with work??
AleksandrR [38]

Answer:

The answer to x2=25 is x=5

Step-by-step explanation:

When using factoring to solve this problem I just square rooted both numbers. The square root of x2 is x and the square root of 25 is 5. Sorry i couldn't help with all of them!

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daser333 [38]

Answer:

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Step-by-step explanation:

Let x be the number of brothers and y be the number of sisters in the family.

1.  Each brother has x-1 brothers and y sisters. If each brother has as many sisters as brothers, then

x-1=y.

2. Each sister has y-1 sisters and x brothers. If each sister has twice as many brothers as she has sisters, then

2(y-1)=x.

3. Solve the system of two equations:

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