Answer:
Distance from Earth to Proxima Centauri (in scientific notation) = 
kilometers
Step-by-step explanation:
We need the conversion between Astronomical Unit and Kilometers.
The conversion is:
1 AU = 1.496*10^8 km
or rounded, given in this problem,
1 AU = 
km
We need the distance from Earth to Proxima Centauri:
AU * kilometers
When multiplying two numbers in scientific notation, we have to "multiply the coefficients" and "add the exponents".
Lets do this:
Distance from Earth to Proxima Centauri (in scientific notation) = kilometers
Answer:
Are the sides parallel?
Step-by-step explanation:
The discriminant for a quadratic polynomial gives you information about the polynomial's roots.
Given
, the discriminant is given by
.
There are three possible conclusions you can draw. If
, then the quadratic has two distinct real roots. If
, then there is one repeated real root. If
, then there are two complex (non-real) roots.
Since you found
, that means that
has two distinct real roots.
<h2>Information:</h2>
2 and 
cups of flour are needed per batch. Marcus wants to make 3 batches.
<h2>Steps:</h2>
Simply multiply the amount of cups of flour per batch with the amount of batches you want to make to find how many cups of flour you need.
2 (cups of flour per batch) x 3 (batches) = 6 
(cups of flour needed for 3 batches)
<h2>Conclusion:</h2>
Marcus needs 6 cups of flour
Answer:
√20
Step-by-step explanation:
d = √(x₂-x₁)²+(y₂-y₁)²
d = √(1-5)²+(-4+2)²
d = √(-4)²+(-2)²
d = √16+4
d = √20
