Answer:
One of the expressions that are equivalent to 4d+6+2d is 6d+6
Step-by-step explanation:
similar triangles mean that all angles are the same, and the side lengths of one triangle correlate to the corresponding sides of the other triangle by the same factor.
that means that the sides 2 (ED) and x (CB) have the same relation as the 6+4 (AD) and the 6 (AB) sides.
so,
x/2 = 6/(6+4) = 6/10 = 3/5
x = 2 × 3/5 = 6/5 = 1.2
Answer:
a)
b) The population increases 7.1% each year.
Step-by-step explanation:
The continuous population growth model is given by:
In which is the population after t years, is the initial population and r is the growth rate.
In this problem, we have that:
A population grows from its initial levelof 22,000 at a continuous growth rcte of 7.1% per year.
This means that
a) Write a function to model the population increase.
b) By what percent does the populaiion increase each year?
So the population increases 7.1% each year.
The algebraic property is called here commutativity :
<span>x ⋅ y ⋅ z = y ⋅ x ⋅ z
| ÷z (We divide by z)
</span>
→ x ⋅ y = y ⋅ x → <span>That means you can switch ( = commute) factors anyway, the product will remain the same.</span>