Answer:
Domain (-infinity, infinity) Range (-4, infinity)
Step-by-step explanation:
look at the x axis. the graph is going forever out, so infinity.
now look at the y axis. where does it stop? -4. you might need to use [ instead of ( when answering your problem (that just means including) hope this helps!
Answer:
x=104
Step-by-step explanation:
2/5(x-4)=20
2/5x-8/5=20
2/5x=20+8/5
=21/3/5
x=21/3/5÷2/5
=104
Answer:
1215
Step-by-step explanation:
It is divisible by 5 because the number in the ones place is 5.
I used a calculator to check if it is divisible by 3
Solution:
<u>A few definitions...</u>
- Rational number - Any integer, fraction, terminating decimal, or repeating decimal is classified as a rational number
- Irrational number - All the real numbers which are not rational numbers.
<u>Option A - Rational or Irrational?</u>
Since both are known as fractions, they are rational numbers.
<u>Option B - Rational or Irrational?</u>
√2 is classified as an Irrational number because if it is simplified, it does not result in any integer, fraction, terminating decimal, or repeating decimal.
<u>Option C - Rational or Irrational?</u>
- 1/√4 + 7/2
- => 1/2 + 7/2
- => 8/2 = 4
Since this is an integer, this is rational.
<u>Option D - Rational or Irrational?</u>
- √9 + √4
- => √3 x 3 + √2 x 2
- => 3 + 2 = 5
Since this is an integer, this is rational.
In conclusion...
Option B is correct.
