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VARVARA [1.3K]
4 years ago
15

Log(x-1)+log(x+2)=log12

Mathematics
1 answer:
zubka84 [21]4 years ago
3 0

Answer:

x = 3

Step-by-step explanation:

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Y = inversely proportional to x. When x = 3, y = 8. Work out the value of y when x = 8.
liberstina [14]

y = k/x

8 = k/3

k = 24

sub back in

y = 24/x

y = 24/8

<h3><em><u>y</u></em><em><u> </u></em><em><u>=</u></em><em><u> </u></em><em><u>3</u></em></h3>
3 0
3 years ago
If each dozen cost $3.70 what should be the selling price be if he wants to make an 80% profit?​
klemol [59]
Answer: $6.66

Explanation:
3.70 multiplied by 0.80 = 2.96.
3.70 + 2.96 = $6.66
7 0
3 years ago
Read 2 more answers
On day 1, i'm going to run 12 laps at the fitrec. then, for each of the next six days, i'm going to roll a six-sided die, and th
sveticcg [70]
Short answer: 36.
This is a combination/permutation problem.
To put it simple, a die has 6 sides, there are 7 days but 1 is already determined (12 laps).
So if we multiple the options (sides on a die) × the number of days (6) we get:
6 × 6 = 36 possible outcomes.

To show this we can get
12, 13, 14, 15, 16, 17, 18
12, 13, 14, 15, 16, 17, 19
12, 13, 14, 15, 16, 17, 20
... all the way to
12, 18, 24, 30, 36, 42, 48
5 0
4 years ago
A father of 12 at death orders his lawyer to share his properties amongest his 12 sons. if the man is worth 12.3 million, and ea
GuDViN [60]

Answer:

Step-by-step explanation:

The man has twelve sons. So we need an equation that has twelve numbers added to 12.3 million.  The youngest son's share is what we want to find, so set it to x.  Each son older will have 175 more than the one younger than him.

So the next to youngest will have x+175(1) and the next will have x+175(2) and so on to the twelfth one.

So....

     

x + x+175 + x+175(2) + x+175(3) + x+175(4) + x+175(5) + x+175(6) + x+175(7) + x+175(8) + x+175(9) + x+175(10) + x+175(11) = 12,300,000

Now simplify.  Add all the x's and multiply all the numbers.

12x + 350+525+700+875+1050+1225+1400+1575+1750+1925+2100=12,300,000

Continue to simplify by adding.

12x+13,475=12,300,000   Now simplify by subtracting the non 'x' number from both sides

12x+13,475-13,475=12,300,000-13,475

12x=12,286,525  Now simplify by dividing both sides by 12.

x = 1,023,877.08

The youngest son will inherit 1,023,877.08.

There should be a unit:$, pounds, something.

8 0
3 years ago
a construction company is building a house based on the picture. The scale from picture to real house is 1 inch= 8 feet the heig
stiv31 [10]

Answer:

The Height of the building would be 20 feet.

Step-by-step explanation:

1.) 1/8 = 2.5/X

2.) Answer: 20 Feet

3.) Cross Multiply

    - 1 inch is to 8 feet as 2.5 inches is to 20 feet.

5 0
2 years ago
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