1. Rational
2. No Rational
3. Rational
4. Rational
5. Rational
6. No Rational
7. Rational
8.
<u>Answer:</u>

<u>Step-by-step explanation:</u>
The formula for volume of a cylinder is as follows:

where:
• r = radius (? cm)
• h = height (7 cm).
Substituting the values into the formula:

Now solve for
:
⇒ 
⇒ 
⇒ 
Answer:
The Humming bee need to eat 0.0028 ounces of food each day.
Step-by-step explanation:
Given:
Weight of the humming bee = 0.0056 ounces
We need to find amount of food humming bee should eat each day to survive.
Solution:
Now given that:
They have to eat half their body weight every day to survive.
So we can say that;
Amount of food humming bee needs to eat is half of the weight of the humming bee.
framing in equation form we get;
Amount of food humming bee needs to eat = 
Hence The Humming bee need to eat 0.0028 ounces of food each day.
Answer:
Do you mean which equation should the 5x+10=15 be multiplied to?
it would be -2
Step-by-step explanation:
This is because 5 times -2 is -10
and so when you add the (now) x value of the first equation to the x value of the second equation, it gets 0
which makes it eliminated!
-10x+10x=0