X - y = 3
6x + 4y = 13
x = y + 3
6(y + 3) + 4y = 13
6y + 18 + 4y = 13
10y = 13 - 18
10y = - 5
y = - 5/10
y = - 1/2
x = - 1/2 + 3
x = - 1/2 + 6/2
x = 5/2
if c is a irrational number that means a or b is also an irrational number or both of them are irrational numbers but they are different then each other
i hope that will help
Answer:
x = 8/5
Step-by-step explanation:
Cross multiply
5(x + 2) = 3 * 6
5x + 10 = 18
5x = 8
x = 8/5
Answer:
$1500
Step-by-step explanation:
- Investment 1 = $3000
- Interest 1 = 4%
- Investment 2 = x
- Interest 2 = 5.5%
- Total interest = 4.5%
<u>Total interest:</u>
- 3000*0.04 + x*0.055 = (3000+ x)*0.045 ⇒ multiply by 100 both sides
- 3000*4 + 5.5x = 3000*4.5 + 4.5x ⇒ parenthesis
- 5.5x - 4.5x = 3000(4.5-4) ⇒ collect like terms
- x = 3000*0.5 ⇒ simplify
- x = 1500 ⇒ answer
Additional money is $1500
