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madreJ [45]
3 years ago
8

Please help!!! I dont know why my answer keep getting marked wrong!!!

Mathematics
1 answer:
Dmitry [639]3 years ago
4 0

Answer:

+-1,+-3,+-9,+-27,+-81

Step-by-step explanation:

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-9x+2>18 AND 13x+15≤-4
meriva

Answer:

for -9x+2>18 its x<-16/9 and for 13x+15≤-4 its x<-19/13

Step-by-step explanation:

4 0
3 years ago
Let f(x)=⌊x/2⌋. We learned that the floor and the ceiling functions are NOT invertible, but we also learned about the set of pre
romanna [79]

Answer:

Value of f^{-1}(\{4\}) is 8.

Step-by-step explanation:

Given function,

f(x)=\big[\frac{x}{2}\big]

we have to find : f^{-1}(\{4\})

It is known that,

[x]=the greatest integer <=x

Then,

f(x)=\big[\frac{x}{2}\big]

\implies x=f^{-1}(\big[\frac{x}{2}\big])

Taking x=8 we get,

f^{-1}(\big[\frac{x}{2}\big])=x

\implies f^{-1}(\big[\frac{8}{2}\big])=8

\implies f^{-1}([4])=8

\implies f^{-1}(\{4\})=8                                          ( Since [4]=4 )

Hence the value of f^{-1}(\{4\}) is 8.

7 0
3 years ago
50 points please help
Ratling [72]

Answer:

A traditional economy is a system that relies on customs, history, and time-honored beliefs. Tradition guides economic decisions such as production and distribution. Societies with traditional economies depend on agriculture, fishing, hunting, gathering, or some combination of them. They use barter instead of money.

3 0
3 years ago
Read 2 more answers
A $17,000 T-bill is purchased at a 2.75% discount rate for 20 weeks.
SVEN [57.7K]
The effective rate of interest to the nearest hundredth of a percent is 2.75%

Given:
T-bill value $17,000
purchased at a discount rate of 2.75%
term of 20 weeks.

An effective rate of interest is also referred as the DISCOUNT RATE, market interest rate, the internal rate of return, the annual percentage rate, and yield to maturity. 

Since the discount rate is given, it is also the effective rate of interest.
3 0
3 years ago
Roger and Sulee each decomposed 1 1/6.Roger wrote 1/6+1/6+2/6+3/6.Sulee wrote 3/6+4/6. who is correct? Explain
dybincka [34]
The correct answer is Roger
4 0
3 years ago
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