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Lyrx [107]
3 years ago
15

Please help me solve log3(2x+5)=3

Mathematics
1 answer:
N76 [4]3 years ago
4 0

Answer:

x = -2

Step-by-step explanation:

Divide both sides by 3

3 (2x + 5)/3 = 3/3

Simplify

2x + 5 = 1

Subtract 5 from both sides

2x + 5 - 5 = 1 - 5

Simplify

2x = -4

Divide both sides by 2

2x/2 = -4/2

Simplify: 2x/2

Divide the numbers: 2/2 = 1

= x

Simplify: -4/2

Apply the fraction rule: -1/b = -a/b

= - 4/2

Divide the numbers: 4/2 = 2

= -2

x = -2

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-1/2 + 1 1/2 + 3 - n
GREYUIT [131]

Answer:

The answer all together would be 5 minus n.

Step-by-step explanation:

a negative and a positive equals a positive so -1/2 + 1 1/2 would equal 2 and 2 + 3 equals 5. Then, the remaining numbers are 5 and n. The final answer is 5 minus n because n is unknown.

4 0
3 years ago
X+y=5<br> 2x - y = 1<br><br> Need help
erma4kov [3.2K]

Answer:

y = 3

x = 2

Step-by-step explanation:

x+y=5  ==   -2x - 2y = -10

2x-y = 1 ==  2x - y = 1    +

                  -------------------

                  -3y = -9

                  <u>y = 3</u>

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x + 3 = 5

<u>x = 2</u>

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4 years ago
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3 years ago
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Josiah, Nathaniel and Walden work 7,5, and 3 days respectively on a particular job. If the payment for the job is $216.00, how m
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What is the prime factorization of 45?<br> A 23 x 5<br> 32 x 5<br> 52 X 3<br> 52 X 9
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Answer:45=3x3x5

Step-by-step explanation:

prime factorization of 45

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