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3 years ago

Which value is equivalent to 9^c x 9^-c A. 0 B. 1 C. 1/9^2C D. 9

Mathematics

1 answer:

AleksAgata [21]3 years ago

7 0

Answer:

Step-by-step explanation:

Using the rule of exponents

$a^{m}$ × $a^{n}$ = $a^{(m+n)}$

$a^{0}$ = 1

Given

$9^{c}$ × $9^{-c}$

= $9^{(c-c)}$

= $9^{0}$

= 1 → B

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(26.6.1) Which of the following is an example of perpendicular lines?

Otrada [13]

Answer:

Step-by-step explanation:

The hands on the clock at 9.00

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3 years ago

There are 12 baseball trading cards in 4 packages. each package has the same number of cards. Write a rule in words for the numb

Tamiku [17]

Answer:

Rule in words:

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Rule as an algebraic expresssion:

$y=x/3$

Explanation:

This is a direct variation problem.

Since each package has the same number of cards, the number of cards is proportional to the number of packages.

12 baseball cards in 4 packages means that there are 12/4 = 3 cards per package, so:

The number of cards is 3 times the number of packages.

The number of packages is the number of cards divided by the number of 3.

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To find the algebraic expression that describes the same rule, you can set the following proportion:

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And from that you solve for y:

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4 years ago

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3 years ago

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masha68 [24]

Answer:

10.5 Degree.

Step-by-step explanation:

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4 years ago