When you are multiplying 2 numbers with exponents, you need to add the exponent. When you multiply an exponent with an exponent, you multiply them.
So,
(3^2 x 7^4) ^9
First multiply the base and add exponents = ( 21^6) ^9
= 21 ^6x9
21^54
The same rule applies for variables, just pretend there is an imaginary 1.

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Find 1 cup :
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Find 4 cups :
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Answer: John can make 6 batches with 4 cups of flour.--------------------------------------------------------------------------------------------
Answer:
x=77
Step-by-step explanation:
Since both triangles are congruent, the angles will also be equal. Hence, x=77 degrees.
Answer:
okay thanks didn't expect this lol
I don't understand the question