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salantis [7]
3 years ago
15

Is the real number √1.21 rational or irrational? A) Rational B) Irrational

Mathematics
2 answers:
AURORKA [14]3 years ago
7 0
The answer is rational. It is 1.1

svet-max [94.6K]3 years ago
6 0

Answer:

A) Rational.

Step-by-step explanation:

We have been given a real number \sqrt{1.21}. We are asked to determine whether our given number is rational or irrational.

We know that an irrational number is a number that cannot be written as fraction.

Upon evaluating our given number, we will get:

\sqrt{1.21}=1.1

We can write 1.1 as fraction as shown below:

1.1=\frac{11}{10}

Since we can write our given number a fraction, therefore, our given number is a rational number and option A is the correct choice.

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Which type of transformation preserves the symmetry of an even function f(x) but does not preserve the symmetry of an odd functi
leva [86]

Answer:

Vertical Translation.

Step-by-step explanation:

If you shift a parabole up, for example, it is still symmetric about the y-axis. If you shift it left or right, it loses its symmetry. Reflection maintains symmetry for both even and odd functions.

8 0
3 years ago
Barbara can pay either $80 per month or one lump sum of $800 per year for car insurance. How much does she save yearly if she ch
Schach [20]

Answer:

$160

Step-by-step explanation:

In the monthly payment option she would pay $80 per month, therefore in a year (12 months) she would pay:

$80*12 =  $960

We can see that this amount is greater than the $800 she would pay in the lump sum payment option.

The money she would save is:

$960 - $800 = $160

She would save<u> $160 yearly</u> with the lump sum payment option.

4 0
4 years ago
How to solve -4(9+6)
MaRussiya [10]

Answer:

-60

Step-by-step explanation:

-4(9+6)

-4(9) +-4(6)

-36-24

-60

6 0
3 years ago
Read 2 more answers
Which value represents the first two terms of the sequence a1=2 and an=-3(an-1)^2?
satela [25.4K]
I'm not really sure what you're asking, but if you want to calculate the first two terms of the sequence after a1, then here's the answer:
If a1=2, then a2 = -3(a1 - 1)^2 = -3(2-1)^2 = -3*(-1)^2 = -3*1 = -3.
Then, a3 = -3(a2 - 1)^2 = -3(-3-1)^2 = -3(-4)^2 = -3*16 = -48.
I'm sorry if this is not what you wanted.
8 0
3 years ago
Which operation should be performed first according to the order of operations?
amid [387]

Answer:

5+ 20 is the first thing that you do in the equation you  do 5+20x3 then you do minus 12 then you can solve the equation straight across. you follow the rule PEMDAS. parenthesis, exponents, multiplication, division, addition, subtraction.

Step-by-step explanation:


7 0
3 years ago
Read 2 more answers
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