Answer:
To solve the system of equations using elimination, we need to eliminate one variable by adding or subtracting the equations. Let's start by rearranging the first equation in standard form:
2x - 7y = 16
Next, let's rearrange the second equation so that both equations have the same number of x or y terms:
3y = 7 - x
We can rewrite this equation as:
x + 3y = 7
Now we have the following system of equations:
2x - 7y = 16
x + 3y = 7
To eliminate the y variable, we can multiply the second equation by 7:
7(x + 3y) = 7(7)
This gives us:
7x + 21y = 49
Now we can subtract the first equation from this equation:
(7x + 21y) - (2x - 7y) = 49 - 16
Simplifying the equation gives us:
7x + 21y - 2x + 7y = 33
Combining like terms, we get:
5x + 28y = 33
Now we have a new equation with only x and y terms. We can solve for one variable and substitute it back into either of the original equations to find the value of the other variable.
Step-by-step explanation:
B) $1,400 at 2%; $2,200 at 4%
C) $1,000 at 2%; $1,800 at 4%
Answer: Option 'C' is correct.
Step-by-step explanation:
Since we have given that
Let the principal amount be 'x'.
First rate of interest = 2%
Second rate of interest = 4%
Number of years = 1
Amount of interest he earned = $92
According to question,
So, First investment of $1000 at 2% and Second investment of $1000+$800=$1800 at 4%.
Hence, Option 'C' is correct.
3
23. Short Answer--- Emily slid down She
the sliding board at the park. A. top
Where did Emily have the most bott
potential energy? B. Where did
Emily have the most kinetic
energy?.
I need help with this plz
Answer:
Most kinetic energy on the top
Answer:
Php 770.00
Step-by-step explanation:
The cost of labor is ...
(hours) × (hourly rate)
= (3 h) × (Php 150.00/h) = Php 450.00
The total cost is ...
total cost = cost of labor + cost of parts
= (Php 450.00) + (Php 320.00) = Php 770.00
Randolf owes Mr. Solidarios Php 770.00 for the repair.