Answer:
x = 1/8
Step-by-step explanation:
Given:
Multiplying by 4x throughout, we will have:
⇒ 8x + 9 = 80x
⇒ 9 = 72x
Dividing by 72,
⇒ x =
⇒ x =
Substitute x = 1/8 in the given equation and it will give us 20. That means the value of 'x' identified is correct.
So, x = is the required answer.
If the Martin family's truck gets an average of 25 miles per gallon. The distance they can drive using 7 gallons of gas will be 175 miles.
The study of numbers and their operations, which are relevant to all other fields of mathematics, is part of the discipline of arithmetic operations. Addition, subtraction, multiplication, and division are the basic operations that make up this system.
It is given that, the Martin family's truck gets an average of 25 miles per gallon.
We have to find the number of miles they can drive using 7 gallons of gas.
We'll apply division by Splitting into equalhalves or groups, the division may be used to decide how to distribute fuel evenly among a group.
The distance they can drive for the 7 gallons of gas will be,
=25 miles per gallon × 7 gallons
=175 miles
Thus, if the Martin family's truck gets an average of 25 miles per gallon. The distance they can drive using 7 gallons of gas will be 175 miles.
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The speed of the boat in still water will be 30 miles per hour and the speed of the current will be 6 miles per hour.
The distribution of weights to the variables involved that establishes the equilibrium in the calculation is referred to as a result.
Let the speed of the boat in still water be x and the speed of water be y.
A boat traveled 504 miles downstream and back. The trip downstream took 14 hours. Then the equation will be
x + y = 504 / 14
x + y = 36 ...1
The trip back took 21 hours. Then the equation will be
x - y = 504 / 21
x - y = 24 ...2
Add equations 1 and 2, then the value of x will be
2x = 36 + 24
2x = 60
x = 30 miles per hour
Then the value of y will be
30 - y = 24
y = 6 miles per hour
The speed of the boat in still water will be 30 miles per hour and the speed of the current will be 6 miles per hour.
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Answer:
The speed of the boat in still water is 30 mph, and the speed of the current is 6 mph.
Step-by-step explanation:
Let's say b is the speed of the boat in still water, and c is the speed of the current.
Distance = rate × time
Going downstream:
504 = (b + c) × 14
36 = b + c
Going upstream:
504 = (b − c) × 21
24 = b − c
Two equations, two variables. Solve with substitution or elimination. To use elimination, add the equations together.
60 = 2b
b = 30
Plug into any equation to find c.
36 = b + c
36 = 30 + c
c = 6
The speed of the boat in still water is 30 mph, and the speed of the current is 6 mph.
-2a + 2c
-2a - 2c
2a + 2c
2a - 2c
Answer:
Option 1
Step-by-step explanation:
To find : Take from .
Solution :
The equation ....(1)
....(2)
Taking (1) from (2) means subtracting equitation (2) from (1),
i.e
So, Taking from is
Therefore, Option 1 is correct.
Answer:
Am not really sure
Step-by-step explanation: