Let x = the amount of money he invests at 9%
and y = the amount of money he invests at 3%
y = x - 1400
0.09x + 0.03y = 198
x - y = 1400
9x + 3y = 19800
3x - 3y = 4200
9x + 3y = 19800
12x = 24000
x = 2000
y = 600
$2000 invested at 9% interest
and $600 invested at 3% interest.
X = 0
X = -2
X = 7
Hope that helped;)
You did not mention rusty sorry can't help but midnight eats 4 cups a day
Answer:
r=5
Step-by-step explanation:
1.simplify both sides of the equation.
2.substract 2r from both sides.
3.substract 12 from both sides.
4.multiply both sides by 5/(11)
5. your answer will be 5.
r=5
Answer:
b Superscript positive
Step-by-step explanation:
Negative exponents in the denominators can be evaluated by moving the function from the denominator to the numerator and changing the power from negative to the positive.
We have
1/b⁻² = b²
Moving the function with a power from denominator to numerator or from numerator to denominator changes the sign of the power. It is not equal to zero.
This is the property of exponents.
