Answer:
Step-by-step explanation:
Help with what
Using factorization method;
x²+13x+40=0
x²+13+40
Find two numbers that you can add together to give the co-efficient of variable x. (I.e 13 for this question). Also, you'll find two numbers that you can multiply with each other to give you the whole number as an answer. (I.e 40 in this question). The two numbers must be the same (i.e the two numbers that will be added to give the co-efficient of x and the two numbers that will be multiplied to give the whole number must be the same two).
The two numbers are +5 and +8
The equation will therefore be = x²+5x+8x+40
You'll then factorize (I.e use a common factor of both values to bracket them)
x(x+5)+8(x+5)
(x+8)(x+5)
x is therefore (x+8=0) or (x+5=0)
x=(x=0-8) or (x=0-5)
x= -8 or x= -5
The duration of this event is 4 hours
This function is a quadratic one
let Δ be the discriminant :
a = -16
b = 48
c= 64
Δ = 48²-4*(-16)*64 = 6400
So there are two values that satisfy -16t²+48t+64 = 0 x and y
x= (-48+80)/-16*2 = -1
y= (-48-80)/-16*2= 4
x<0 so w won't take it since time is a positive value here
so t = y = 4h
What is a quadratic equation meaning?
- Any equation containing one term in which the unknown is squared and no term in which it is raised to a higher power solve for x in the quadratic equation
+ 4x + 4 = 0. - A quadratic problem is a type of problem in mathematics that deals with a variable multiplied by itself — an operation known as squaring. The area of a square is defined as its side length multiplied by itself in this language. The term "quadratic" is derived from the Latin word quadratum, which means "square."
Learn more about quadratic equation here:brainly.com/question/1214333
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Answer:
D ... y= 3,450/ 1=10.13e^-0.2854
Step-by-step explanation:
The minimum number of sixty passenger buses needed is 4