If she drives 318.4 km for 4 hours, then if we divide 318.4 by 4 we get 79.6 km per hour.
79.5km per hour x 5.5 hours
=437.8 km
Answer:
d.) 2
Step-by-step explanation:
If you were going to solve the second part of the equation you would distribute and since we want the number we chose to equal 8, so the sides will be equivelent and their will be infinite solutions, we have to account for the *4 so if we do 8 ÷ 4 we will have the number we should use for infinite solutions
8÷4=2
You can also check it by putting 2 in the equation
4x + 8 = 4(x+2) now distribute the 4
4x+8=4x+8
Answer:
20 square units
Step-by-step explanation:
Area = 5 x 8 x 1/2
Area = 40 x 1/2
Area = 20
Hope that helps!
Answer:
-2, 1, 4.
Step-by-step explanation:
The given equation is
It can be written as a system of equations.
Plot the graph of these equation on a coordinate plane as shown below.
From the graph it is clear that the graph of both curves intersect each other at (-2,4), (1,-5) and (4,40).
The x-coordinates of intersection points are -2,1 and 4. It means, the given equation is true for -2,1 and 4.
Therefore, the zeroes of given equation are -2,1 and 4.
Answer:
Part 1) Is a cubic expression
Part 2) The quadratic expression is 12x² + 8x − 1
Step-by-step explanation:
Part 1) Classify the expression: 5x³ + 2x − 3
we know that
Polynomials can be classified two different ways - by the number of terms and by their degree.
so
a) <u>By the number of terms</u> is a trinomial, because has three terms
b) <u>By their degree</u> The degree of the polynomial is found by looking at the term with the highest exponent on its variable
The highest exponent is 3 so this is a 3rd degree trinomial
therefore
Is a cubic expression
Part 2) Choose the expression that represents a quadratic expression
we know that
If the expression is a quadratic equation , then the highest exponent of the variable is 2
therefore
The quadratic expression is 12x² + 8x − 1