It’s a perpendicular is two lines that intersect creating a cross
Answer:
5,1
Step-by-step explanation:
7x + 4y = 39
2x + 4y = 14
since, the 4y same for both equation then we can eliminate the 4y by subtracting the two equation
7x + 4y = 39
2x + 4y = 14
---------------- -
5x + 0 = 25
5x = 25
x = 25/5 = 5
then we can input (subtitute) the value of x into the equation, I choose 2x + 4y = 14
2x + 4y = 14
2(5) + 4y = 14
10 + 4y = 14
4y = 14 - 10
4y = 4
y = 4/4 = 1
or if your teacher ask you to use elimination to find the value of x we can write like this
7x + 4y = 39
2x + 4y = 14
make the coeficient of x in both equation same
7x + 4y = 39 (x2)
2x + 4y = 14 (x7)
so
14x + 8y = 78
14x + 28y = 98
--------------------- -
0 - 20y = -20
-20y = -20
y = (-20)/(-20) = 1 (same answer right)
so the correct answe is
(5,1)
Answer:
1) 2.71%
2) $38.32
Step-by-step explanation:
Opening balance = $1220
Balance after 10 days (after expense) = $1690
Balance after 10 days(after payment) = $1340
APR = 33%
1) Periodic interest rate = APR × 
= 33%× 30/365
= 2.71%
2) Interest charged for first 10 days = 
= $11.02
Interst charged for the next 10 days = 
= $15.2
Interest charged for the next 10 days = 
= $12.10
Total interest for 30 days = 11.02+15.2+12.10
= $38.32
It is 19%!! :) an explanation is:
We assume, that the number 2500 is 100% - because it's the output value of the task.
2. We assume, that x is the value we are looking for.
3. If 100% equals 2500, so we can write it down as 100%=2500.
4. We know, that x% equals 475 of the output value, so we can write it down as x%=475.
5. Now we have two simple equations:
1) 100%=2500
2) x%=475
where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:
100%/x%=2500/475
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.
7. Solution for 475 is what percent of 2500
100%/x%=2500/475
(100/x)*x=(2500/475)*x - we multiply both sides of the equation by x
100=5.2631578947368*x - we divide both sides of the equation by (5.2631578947368) to get x
100/5.2631578947368=x
19=x
x=19
now we have:
475 is 19% of 2500
