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igor_vitrenko [27]
2 years ago
15

How do you solve this?

Mathematics
1 answer:
Savatey [412]2 years ago
7 0

Step-by-step explanation:

to "solve" this I need an equation.

this whole expression must be equal to something.

without that I can only try to simplify the expression.

remember that

a/b / c/d = ad / bc

so, here we have

3a/(((a²/x) - 1)(a/x - 1)) = 3a/(a³/x² - a²/x - a/x + 1) =

= 3a/(a³/x² - a²/x - a/x - a/a) =

= 3a/((a²/x² - a/x - 1/x - 1/a)×a) = 3/(a²/x² - a/x - 1/x - 1/a)

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Eighty, decreased by three times a
Marina86 [1]

Answer:

The number is 9.

Step-by-step explanation:

Lets write this as an equation first. We'll substitute the number for the variable <em>x</em>.

80 - 3x = 5x + 8

First, let's add 3x to both sides.

80 - 3x + 3x = 5x + 3x + 8

80 = 8x + 8

Next, let's subtract 8 from both sides.

80 - 8 = 8x + 8 - 8

72 = 8x

Finally, let's divide both sides by 8.

72/8 = 8x/8

9 = x

<em>"x" is 9.</em>

<em>So the secret number is 9.</em>

P.S.

This is my first answer to a Brainly question so please don't complain!

6 0
3 years ago
It takes Betty 9 h to bake a cake and 8 h to knit a sweater. What is her opportunity cost of 1 cake in terms of knitted sweaters
trapecia [35]

Answer:78

Step-by-step explanation:

7 0
3 years ago
Oliver climbed 222 meters of a steep mountain reach the summit. He then rappelled down the other side of the mountain to return
nikdorinn [45]
B -222

Because he fell/descended 222 meters. And falling or going down produces a negative integer. Also, if you were actually doing the math to try to find where Oliver is currently located, you wouldn't add 222, or 0, or subtract -444. You would subtract 222. 

In addition, be aware that the question is asking you an integer to represent a situation, not the answer of where Oliver is. 

6 0
3 years ago
The following table shows the working populations, average salaries, and income tax rates of France and Ger
ra1l [238]

Answer:

a.

The French government gathers €85,930,190,677 more than the German government

Step-by-step explanation:

8 0
3 years ago
Lewis wants to play several games of paintball with his friends. At the park, it costs $16.97 for admission and paintballs, and
SpyIntel [72]

B, $5.10x (it doesnt give you the ammount of games he played so x represents it) + $16.97 (the cost he payed to get in)

6 0
3 years ago
Read 2 more answers
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