An irrational number is a number that cannot be expressed in a ratio of two numbers
a rational number is a number that can be expressed in a ratio
7.79cm It is an equilateral triangle so it has 3 equal sides. That means each side is 9cm. <span>
Now draw a line from the top of the equilateral triangle to the base, and dividing it into two. You will have made two smaller triangles, with sides 9, 4.5, and h (the one you want to find).
A line drawn from the apex of an equilateral triangle to the midpoint of the base is perpendicular to the base, so you can use Pythagoras' Theorem!
4.5^2 + h^2 = 9^2
h = sqrt(9^2 - 4.5^2)
Therefore, the height is 7.79cm (2 decimal places)</span><span>
</span>
Answer:
370
Step-by-step explanation:
I am not going to answer each but here is a general answer.
y is total price and x is number of kids
Sandy's equation would be y= 10+5x
Kimmi's equation would be y= 25
For them to equal we would have 25=10+5x
Simplify
5x=15
x=3
So for them to be equal, Sandy should have 3 kids.
So if someone has 5 children then he should choose Kimmi
Answer:
triple the scale factor
Step-by-step explanation:
meaning the scale factor would have to be ³ (cubed) to become the volume ratio