The equation you looking for would come out as 5*(x-8)^2 + 9
expand it out to get your standard form
-1 1/8 I think. Not completely sure though.
Add 3 to both sides so that the equation becomes 2x^2 + 7x - 6 = 0.
To find the solutions to this equation, we can apply the quadratic formula. This quadratic formula solves equations of the form ax^2 + bx + c = 0
x = [ -b ± √(b^2 - 4ac) ] / (2a)
x = [ -7 ± √(7^2 - 4(2)(-6)) ] / ( 2(2) )
x = [ -7 ± √(49 - (-48) ) ] / ( 4 )
x = [ -7 ± √(97) ] / ( 4)
x = [ -7 ± sqrt(97) ] / ( 4 )
x = -7/4 ± sqrt(97)/4
The answers are -7/4 + sqrt(97)/4 and -7/4 - sqrt(97)/4.
Answer:
It will take the object 0.56 hours to travel 5 and one tenth km
Step-by-step explanation:
An object is traveling at a steady speed of 9 and nine tenths km/hour. This means the object is travelling at a speed of 9 1/10 km/hour.
Changing to improper fraction,
9 1/10 =( 10×9 +1)/10
= 91/10 = 9.1km/hour
The amount of time it will it take the object to travel 5 and one tenth km will be:
5 and one tenth = 5 1/10. Making it an improper fraction, = (5×10+1)10= 51/10
=5.1
Speed = distance/time
Distance = speed × time
Time = distance/ speed
= 5.1/ 9.1 = 0.56 hours
The answer is B-40.
It is an acute angle so it can not be 155 but the angle does not look like it is close to being 90 degrees so the answer has to be 40!
Hope this helps(can I get brainliest)