Brenda does household chores for neighbors to earn spending money. One week she worked 312 hours for $4.75 an hour, 6 hours and
1 answer:
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Answer:
A. The solutions are .
B. The factored form of the quadratic expression
Step-by-step explanation:
A. To find the solutions to the quadratic equation you must:
The solutions are:
B. Two expressions are equivalent to each other if they represent the same value no matter which values we choose for the variables.
To factor :
First, multiply the constant in the polynomial by where
is equal to -1.
Since both terms are perfect squares, factor using the difference of squares formula
The expression of integral as a limit of Riemann sums of given integral is 4
∑
from i=1 to i=n.
Given an integral .
We are required to express the integral as a limit of Riemann sums.
An integral basically assigns numbers to functions in a way that describes displacement, area, volume, and other concepts that arise by combining infinite data.
A Riemann sum is basically a certain kind of approximation of an integral by a finite sum.
Using Riemann sums, we have :
=
∑f(a+iΔx)Δx ,here Δx=(b-a)/n
=f(x)=
⇒Δx=(5-1)/n=4/n
f(a+iΔx)=f(1+4i/n)
f(1+4i/n)=
∑f(a+iΔx)Δx=
∑
=4∑
Hence the expression of integral as a limit of Riemann sums of given integral is 4
∑
from i=1 to i=n.
Learn more about integral at brainly.com/question/27419605
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