3 years ago

Write 7x7x7 as a base and an exponent (2ps possilbe)

Mathematics

1 answer:

Alexandra [31]3 years ago

6 0

Answer:

$7^{3}$

Step-by-step explanation:

7 is being multiplied by itself 3 times meaning it's to the power of 3 so the base is 7 while the exponent is 3.

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The mean is the sum of all numbers divided by the number of numbers. We can set up an equation:

$\sf\dfrac{78+81+69+94+x}{5}=79$

Where 'x' is the next quiz score she need. Solve for 'x'. Multiply 5 to both sides:

$\sf 78+81+69+94+x=395$

Add:

$\sf 322+x=395$

Subtract 322 to both sides:

$\boxed{\sf x=73}$

So her next quiz score needs to be 73 in order to have a mean score of 79 on all her quizzes.

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