Answer:
one solution
Step-by-step explanation:
X-9=0
Add 9 to each side
X-9+9=0+9
x = 9
There is one solution
Answer: a. −0.41
Step-by-step explanation:
The slope for the best-fitting linear equation is given by :-
where , =sum of squared deviations from the mean of X.
= correlation between y and x in terms of the corrected sum of products.
As per given , we have
Then, the value of the slope for the best-fitting linear equation will be
Hence, the value of the slope for the best-fitting linear equation= -0.41
So the correct answer is a. −0.41 .
Let K and T be the speeds of Kirk and Thor respectively.
Note the standard definition that d=vt, distance equals velocity times time.
t=d/v
For Kirk, t=525/(T+5)
For Thor, t=490/T
Since we are told that they have traveled the same amount of time we can say t=t which leaves us:
525/(T+5)=490/T multiply both sides by T
525T/(T+5)=490 multiply both sides by T+5
525T=490T+2450 subtract 490T from both sides
35T=2450 divide both sides by 35
T=70
So Thor's average speed is 70kph, since K=T+5
K=75kph
So Kirk's average speed is 75kph
Answer:
y = 0.6x - 3.2
Step-by-step explanation:
Parallel lines have the same slope, so in this case the parallel line will be:
y = 0.6x + b
There's b because you don't know the y-intercept yet
Then you want to substitute the point (-3, -5) since the parallel line passes through it
-5 = 0.6(-3) + b
-5 = -1.8 + b
b = -3.2
*solved for y-intercept
Answer: y = 0.6x - 3.2