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tester [92]
4 years ago
8

Is -18.75 a real number,irrational,rational,integer,whole or natural? it can be more than one choice

Mathematics
1 answer:
Morgarella [4.7K]4 years ago
4 0
It's irrational, number and intiger
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The amount of radioactive uranium changes with time. The table below shows the amount of radioactive uranium f(t) left after tim
aniked [119]

Answer:

f(t) = 100(0.25)^t

Step-by-step explanation:

The general exponential function is,

f(t)=ab^t

The points given in the table are,

(0,100),(0.5,50),(1,25)

Putting (0,100),(1,25) in the general equation, we get

\Rightarrow 100=ab^0

\Rightarrow a=100

And

\Rightarrow 25=ab^{1}

\Rightarrow ab=25

Putting the value of a,

\Rightarrow 100b=25

\Rightarrow b=0.25

Now the exponential function becomes,

f(t) = 100(0.25)^t


4 0
3 years ago
Read 2 more answers
Questions 33-36 I don’t know how to find the answer and I need help on how I can find the answer
bulgar [2K]
The answer is 90, 25, 155, 115 respectively
4 0
3 years ago
I need help!!!!!! what is x&y?
Nady [450]
⭐x=7 because
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8 0
3 years ago
What is a equations ?
myrzilka [38]
An equation says that two things are equal. It will have an equals sign "=" like this:

<span>7 + 2 = 10 − 1</span>
4 0
4 years ago
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Alex wrote 103.903 in expanded form as 100+3 x 1+9 x 1/100 +3 x 1/1000. Explain his mistake then tell how to correct it.
Damm [24]
Your mistake was in this part  9 x 1/100 . After the decimal point the place value starts with tenths so you should write 9 x 1/10 .

Place values

Before the decimal point

3 ones = 3 x 1

0 tens = 0 x 10

1 hundreds = 1 x 100

After the decimal point

9 tenths = 9 x 1/10

0 hundredths = 0 x 1/100

3 thousandths= 3 x 1/1000

1 x 100 + 0 x 10 + 3 x 1 + 9 x 1/10 + 0 x 1/100 + 3 x 1/1000

  100     +    0     +   3    +    0.9      +     0        +    0.003

           100         + 3      +          0.9                +     0.003 =  103.903

<span> </span>

8 0
3 years ago
Read 2 more answers
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