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Lisa [10]
3 years ago
10

-7 = -3\sqrt{x} -1" alt="1/2x^3 + x -7 = -3\sqrt{x} -1" align="absmiddle" class="latex-formula">
what is the value of x?
A. 13/8
B. 15/8
C.27/16
D. 25/16

Mathematics
1 answer:
Margaret [11]3 years ago
5 0

Answer:

  none of the above

Step-by-step explanation:

The problem as written cannot have any of the solutions offered.

For any of those choices, the right side expression will be irrational. The left side expression will be rational for any rational value of x, so cannot be equal to the right-side expression.

The solution is an irrational number near ...

  x ≈ 1.33682898582

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I need help asap( whoever answers will have Brainlest)
RideAnS [48]
a. The Greek crisis began when the government borrowed more money that they can repay, so the Greek crisis is a debt crisis. The Greek debt crisis originated from the Greek’s government wasteful and excessive expenditure; especially in public workers’ salaries and overgenerous pension plans. As a result, Greek’s economy became week, corrupt, and incompetent, so the Government had to resort to a massive debt just to function. Debt-to-GDP ratio skyrocketed, which translating in the collapse an subsequent crisis of Greek’s economy.

b. To solve this, we are going to use the standard decay function y=a(1-b)^xwhere 
y is the final amount remaining after t years of decaya is the initial amountb is the decay rate in decimal form 
(1-b) is the decay factor 
x is the time in years

I will tell Greece to cut their expending by 25%
To find our decay factor (1-b), we are going to convert the rate from percentage to decimal; to do it, we are going to divide the rate by 100%
b= \frac{25}{100}
b=0.25
Decay factor = (1-b)
Decay factor = (1-0.25)
Decay factor = (0.75)

We can conclude that our decay factor is (0.75)

c. To solve this, we are going to use the standard decay function y=a(1-b)^x from our previous point. 
where
y is the final amount remaining after t years of decaya is the initial amountb is the decay rate in decimal form 
(1-b) is the decay factor 
x is the time in years

We know from our problem that the initial debt in 2009 was $500 billion, so a=500,000,000,000; we also know fromm our previous calculation that our decay factor is (0.75), so lets replace those values in our function:
y=a(1-b)^x
y=500,000,000,000(0.75)^x

We can conclude that the function that model this debt situation is: y=500,000,000,000(0.75)^x.

d. Greece will be debt-free when heir debt is zero. Translating this into our model, Greece will be debt-free when y=0. Since we will need logarithms to find the time x, and the logarithm of zero is not defined, we are going to use a small value for y, so we can use logarithms to find x.

Let y=1. After all, a $1 debt for a country is practically the same as being debt-free.
y=500,000,000,000(0.75)^x
1=500,000,000,000(0.75)^x

Now, we can solve for x using logarithms:
\frac{1}{500,000,000,000} =(0.75)^x
(0.75)^x= \frac{1}{500,000,000,000}
ln(0.75)^x=ln(\frac{1}{500,000,000,000})
xln(0.75)=ln(\frac{1}{500,000,000,000})
x= \frac{ln(\frac{0.01}{500,000,000,000})}{ln(0.75)}
x=93.6

We can conclude that, with me in charge, Greece will be debt free after 93.6 years. I won't reconsider my answer b. Even tough 93.6 years is a lot of time, cutting the public expense more than 25% will have worse consequences for the economy of the country than the debt itself.

3 0
3 years ago
Please help I am confused multiplying fractions as a mixed number
Zielflug [23.3K]
The answer would be 143/220
3 0
3 years ago
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In the polygon JZNR, point ) has coordinates J(-4, 4). If you translate the
fenix001 [56]

Answer:

J’ (-3,0)

Step-by-step explanation:

Right = x + 1 = -4 + 1 = -3

down = y-4 = 4-4 = 0

4 0
3 years ago
What is 38,736.427 rounded to the nearest hundredths​
Agata [3.3K]

Answer:38736.43

Step-by-step explanation:

Take the number beside the place u are rounding to and if it’s greater than 5 that the number u were rounding up!

8 0
3 years ago
If you flip a coin and roll a 6-sided die, what is the
timama [110]

Answer: 50%

Step-by-step explanation:

There are 2 sides to a coin. If you divide 100 by 2, you get 50%. A 6-sided die has 6 sides. If you divided 100 by 6, you get 16.6666666667%. Since there are only 3 even numbers on a 6-sided die, you would multiply 3 by 16.6666666667% to get 50%. So, the probability you will flip a heads and roll an even number is a 50% chance.

6 0
3 years ago
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