Which decimal does not round to 10?
I am not sure but if the teacher allows you to pick more than one choice, circle all because I think none of them is rounded to 10.

4 0

3 years ago

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The radius of a circle is 3 cm. Find it's area in terms of pi. 28.27 cm2 is wrong

sladkih [1.3K]

Answer:

9 $\pi$

Step-by-step explanation:

The reason why that is wrong is because it says in terms o pi which means you do NOT multiply pi by the radius squared.

EQUATION FOR AREA OF A CIRCLE: $\pi r^{2}$

When you put it all together you get: $\pi * 3^{2}$ which equals $9\pi$

DO NOT MULTIPLY 9 AND PI. IT'S JUST 9 $\pi$

hope this helped :)

5 0

3 years ago

Please help with these two math problems 1. 7^x ÷ 7^y = 2. z^10x^y ÷ z^5 =

IceJOKER [234]

Answer:

1. 7^(x-y)

2. z^5x^y

Step-by-step explanation:

The applicable rule of exponents is ...

(a^b)/(a^c) = a^(b-c)

$\dfrac{7^x}{7^y}=\boxed{7^{x-y}}$

$\dfrac{z^{10}x^y}{z^5}=x^yz^{10-5}=\boxed{z^5x^y}$

8 0

4 years ago

Classify each number as rational or irrational.

Sonja [21]

0.167 is rational
2/9 is rational
225 is rational
Pi is irrational

7 0

4 years ago

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