Answer:
Step-by-step explanation:A car takes 4 hours to reach a destination travelling at the speed of 63 km/h.
Speed = distance / time
Distance = speed × time
Distance it took the car, travelling for 4 hours to a destination at a speed of 63 kilometers per hour would be
4 × 63 = 252 kilometers.
if the car travels at a different speed of 56 kilometers per hour and the distance remains 252 kilometers, the time it takes will be
Time = distance / speed
= 252/56 = 4.5 hours
The time varies inversely with the speed. The more the speed, the lesser the time and the lesser the speed, the more the time.
Let speed = s and let time = t
s varies inversely with t
Introducing constant of inverse variation k, it becomes
s = k/t
When s = 56, t = 4.5
56 = k/4.5
k = 4.5 × 56 =252
This is the distance
The solution of the given equation is (3,6). The correct option is B.(3,6)
<h3>Given equations,</h3>
<h3>How to solve the equations?</h3>
putting the value of y from equation (1) in equation (2) , we get
substitute the value of x=3 in equation (1) we get,
Hence, the solution of given equation is (3,6).
So, the correct option is B.
For more details about the system of equations, follow the link:
brainly.com/question/12895249
Your answer is 472,441 inches
Hope this helps!!!!!!!!
Answer:
The values are a=-6 and b=18.
Step-by-step explanation:
A Geometric sequence is given by the formula
for all , where r ≠ 0 is the common ratio and is the first term of the sequence
.
In this problem we know that m=
2, is the second term of the sequence and is the third term.
First we need to find the general form of the sequence, we can use the fourth term and the value of to find r.
We replace and in the formula , then we have
.
Therefore the general form of the sequence is for all .
To find the value of a, we replace n=2 in our formula, so
.
To find the value of b, we replace n=3 in our formula, so
.
Answer:
1.32%
Step-by-step explanation:
First, find the z-score:
z = (x − μ) / σ
z = (133 − 100) / 15
z = 2.2
Use a calculator or z-score table to find the probability.
P(x > 2.2) = 1 − 0.9868
P(x > 2.2) = 0.0132
1.32% of the population has an IQ more than 133.