Answer:
D $900
Step-by-step explanation:
You just round all of the numbers to their nearest hundred.
EXAMPLE: $395 is closer to $400, than it is to the hundred before it, $300. Therefore you would "round" it up to 400.
Hope this helps!
Answer:

Step-by-step explanation:
For this, you check to see if any of these variables are the same. There are two x's, and 2 y's. So, you have to multiply x and x, which gives you 2x, and since you multiply the y's it will give you y^2.
So the answer will be 
Answer: jet b
Step-by-step explanation: jet a: 510 divided by 5= 102
jet b: 460 divided by 4= 115
jet a will fly 102 miles in one hour
jet b will fly 115 miles in one hour
this means that jet b has the better rate because it flies more in one hour compared to jet a
:)
Answer:
<em>The correct option is: 32.4 km/h</em>
Step-by-step explanation:
The fastest recorded speed of a turtle while swimming is 9 m/s.
Now, 9 m/s 
1 kilometer= 1000 meter
So, 1 meter
kilometer
and <u>9 meters</u>
kilometer
Now, 1 hour = 3600 seconds
So, <u>1 second</u> 
Thus, we will get.........

So, the speed of the turtle will be 32.4 km/h.
Answer:
diameter
circumference

diameter
Step-by-step explanation:
First, find the length of the diameter (d) and the length of the circumference of the circle (c).
Next, divide the length of the circumference c by the length of the diameter d and set up an equation

where the ratio equals to
(the definition of
)
Then, solve the equation for the circumference c:

Finally, substitute 2 times the radius for the diameter
