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3 years ago

9c - 10 = 2c + 53 find what is c.

Mathematics

2 answers:

dezoksy [38]3 years ago

6 0

The answer is c=9 let me know if it correct

NARA [144]3 years ago

5 0

Answer:

c = 9

Step-by-step explanation:

9c - 10 = 2c + 53

9c =2c + 63

7c = 63

c = 9

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The table shows how many books the students in Bergdalsskolan list during the summer. There were 48 students who list 4 books. a

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Let the total number of students = m

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Find the total number of students using the percentage of 4 books.

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1 year ago

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$\left(\dfrac{9a^{-4}}{25}\right)^p=\dfrac3{5a^2}$
$\left(\dfrac9{25a^4}\right)^p=\dfrac3{5a^2}$

One way to find $p$ is to notice that the part on the left hand side within the parentheses can be written as a square:

$\dfrac9{25a^4}=\dfrac{3^2}{5^2(a^2)^2}=\left(\dfrac3{5a^2}\right)^2$

So you could write

$\left(\left(\dfrac3{5a^2}\right)^2\right)^p=\left(\dfrac3{5a^2}\right)^{2p}=\dfrac3{5a^2}$

Since these two expressions are equal, and the bases are the same, you know the exponents must be equal, with the exponent on the right hand side being 1. So $2p=1$ , or $p=\dfrac12$ .

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3 years ago

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the first one is D, the second is B, hope this helps

Step-by-step explanation:

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3 years ago

9c - 10 = 2c + 53 find what is c.​

9c - 10 = 2c + 53 find what is c.