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PtichkaEL [24]
2 years ago
6

Whats the inverse and domain of the inverse

Mathematics
1 answer:
kodGreya [7K]2 years ago
7 0
Graphs of inverse functions have a domain and range jus like any other graph of a function. The domain of a inverse function in the range of the original, and the range of an inverse function is the domain of an original
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Solve using elimination -3x+3y=21 -x-5y=-17
Alenkasestr [34]

Answer:

(2,6)

Step-by-step explanation:

Google

8 0
3 years ago
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
Which of the division expressions below has a remainder? Select all that apply.
gavmur [86]

Answer:

A, B, C, & E

Step-by-step explanation:

A) 19,456 ÷ 6 = 3,242 \frac{2}{3}

    (2/3 is 0.666666666 etc)

B) 28,765 ÷ 13 = 2,212.692308...

C) 4,145 ÷ 3 = 1,381 \frac{2}{3}

    (2/3 is 0.666666666 etc)

D) 4,165 ÷ 17 = 245

    (Not bolded because it is not an answer)

E) 44,312 ÷ 16 = 2,769.5

    C -> When dividing by three, if the first number's values do not add up to a multiple of 3 there will be a remainder. Example from your problem,

4,145 -> 4 + 1 + 4 + 5 = 14 -> 14 is not a multiple of 3, so there is a reminder

    D -> No decimal / fraction, no remainder!

Have a nice day!

    I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly. (ノ^∇^)

- Heather

8 0
2 years ago
Help it’s due in thirty minutes!!!!
Elza [17]

Answer:

-4

Step-by-step explanation:

-5 + ______ = -9

-5 + -4 = -9

6 0
2 years ago
Read 2 more answers
Type your answer
love history [14]

Answer:

9

Step-by-step explanation:

8 0
3 years ago
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