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Lostsunrise [7]
3 years ago
10

Order the steps to solve the equation log(x^2-15)=log(2x) form 1 to 5

Mathematics
1 answer:
nasty-shy [4]3 years ago
6 0

Answer:x=-5 and x=3

Step-by-step explanation:

log(x^2-15)=log(2x)

Cancel log at both sides we get

x^2-15=2x

Collect like terms

x^2-2x-15=0

x^2-3x+5x-15=0

x(x-3)+5(x-3)=0

(x+5)(x-3)=0

x+5=0 x-3=0

x=-5 x=3

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How do you find the selling price for a video game that cost $16 to make and is then marked up 400%?
lisabon 2012 [21]

Answer:

80

Step-by-step explanation:

First find the markup

markup = 16 * 400%

              = 16*4.00

              = 64

Add the markup to the original price

new price = original price + markup

                 =16+64

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6 0
3 years ago
PLEASE SHOW WORK AND HELP EXPLAIN: 12.42 divided by 4.6
Anni [7]

Answer:

12.42 = 1242 / 100;

4.6 = 46 / 10;

12.42 ÷ 4.6 = (1242 / 100) ÷ (46 / 10 ) = (1242 / 100) x (10 / 46 ) = ( 1242 / 46  ) x ( 100 / 10 ) =  27 x 10 = 270;

Step-by-step explanation:


7 0
3 years ago
here a subtraction problem that has been solved incorrectly what is the right answer for 74-25=59 but do it in the addition sent
madam [21]

Answer:

the equation is wrong

Step-by-step explanation:

=> 74-25=59

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=> 59+25

add 59 to 25

=> 84

this means the question is wrong

5 0
2 years ago
Read 2 more answers
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Anastaziya [24]

9514 1404 393

Answer:

  x = 31

Step-by-step explanation:

The sum of angles in a triangle is 180°.

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Answer:

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Step-by-step explanation:

3 0
2 years ago
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