Answer:
Part A) The equation that represent the situation is
Part B) The value of n is
Part C) The equation is and the solution is
Step-by-step explanation:
Part A) A number is increased by 54. The sum is then divided by 9. The result is 21. Write an equation to represent the description above. Use n for the number
Let
n-----> the number
we know that
The linear equation that represent this situation is equal to
Part B) Find the value of n
we have
solve for n
Multiply by 9 both sides
Subtract 54 both sides
Part C) Choose two numbers and use them to do the following:
Write an equation that shows your first number added to n equal to your second number. Solve your equation for n
I choose 35 and 60
Solve for n
Subtract 35 both sides
Ok and, whats the question
So that each row can have the same number of chairs.
18 = 1 x 18
18 = 2 x 9
18 = 3 x 6
so we can arrange them:
1 row of 18 chairs
2 rows of 9 chairs
3 rows of 6 chairs
Answer:
He will need to pay 5.4 Ghana cedis into his educational fund.
Step-by-step explanation:
We need to multiply 4 1/2 by 120 since it is a percentage. We convert 4 1/2 into a decimal which is 4.5. Now, we just need to multiply 120 by 4 1/2 to get an answer of 5.4.
You can make the first equation equal to x: x=0.5y+5 and substitute it into the second equation: 2(0.5x+5)-2y=4 -> -y+10=4 so y=6.
Then plug y into either equation: 2x-(6)=10 -> x=8
The correct ordered pair is (8,6)