Step 1) Add x to both sides and simplify
1+4x=4
Step 2) Subtract 1 from both sides
4x=3
Step 3) Divide everything by 4
x=4/3 (1 1/3) (1.333)
Answer:
392 students
Step-by-step explanation:
Given: 3/8 of the seventh grade students were taking advanced math at the beginning of the year.
Seven dropped out by the end of the year.
There are 140 students taking advanced math at the end of the year.
Lets assume total number of students of seventh grade be "x".
As given, 3/8 of the seventh grade students were taking advanced math at the beginning of the year.
∴ Number of student took advanced maths at the beginning= 
We know, 7 student dropped out of advanced math by the end of the year.
Now, forming an equation to determine number of students taking advanced math at the end of the year.
⇒ 
Solving the equation to find number of student in seventh grade.
⇒ 
Adding both side by 7
⇒ 
Multiplying both side by 8
⇒
Dividing both side by 3
⇒
∴ 
Hence, there are 392 students in seventh grade.
Answer:
the weight for an object with a velocity of 12 meters per second is 600 kilograms
Step-by-step explanation:
The linear momentum of an article is : p = mv
Where p = Momentum
m = mass
v = velocity
The velocity is 16 meters per second and the object weighs 450 kilograms
So, 
We are supposed to find the weight for an object with a velocity of 12 meters per second
So, p = 12m
We are given that the linear momentum is a constant when the mass varies inversely of the velocity.
So, 
Hence the weight for an object with a velocity of 12 meters per second is 600 kilograms
if each block is 2/3 miles long, and he walks 4 1/2 blocks, we can simply multiply to two. It looks like this:
(2/3)(4 1/2)
to multiply, make 4 1/2 into an improper fraction and multiply normally
(2/3)(9/4)
Ton walks 3 miles total.
To simplify a fraction, divide numerator and denominator by
their greatest common factor.
The greatest common factor of 5 and 20 is 5 .
5/20 = 1 / 4