Answer:
ans=-2
Step-by-step explanation:
-3*2+2*2
=-6+4
=-2
Answer:
20
Step-by-step explanation:
The area of a circle is equal to pi*radius^2
We can then write this as
314.1592=π*r^2
We then divide pi to get
100=r^2
take the square root and you find that the radius equals around 10
The diameter is always equal to the radius times two which means that the diameter is 20
hope this helps
Hey there!
In order to solve this problem, we can use the Pythagorean Theorem, which is
. Since the Pythagorean Theorem would find only half of the length of x, we'll need to double it in the end.
First, let's plug in what we know to the Pythagorean Theorem: ![2.1^2 = 1.4^2 + b^2](https://tex.z-dn.net/?f=2.1%5E2%20%3D%201.4%5E2%20%2B%20b%5E2)
Next, we'll simplify to that
is by itself:
![b^2 = 2.45](https://tex.z-dn.net/?f=b%5E2%20%3D%202.45)
Then, we'll find the square root of 2.45, multiply that by 2 and round to the nearest tenth:
![2(\sqrt{2.45} ) = 3.1](https://tex.z-dn.net/?f=2%28%5Csqrt%7B2.45%7D%20%29%20%3D%203.1)
Therefore, x = 3.1 ft.
How to round to the nearest tenth:
In a decimal, the tenth is the first number after the decimal point. To round to the tenth, if the number in the hundredth place is less than 5, you keep the number as it is, but if the number in the hundredth place is more than 5, you increase the number in the tenth place by 1.
Hope this helps!! :)
Answer:
Look it up. it will help you work it out. hope this helped.
Step-by-step explanation: