Answer:
D. (-7, -9)
Step-by-step explanation:
<u>Equation 1</u> : -5x + 5y = -10
<u>Equation 2</u> : -3x + 2y = 3
<u>Multiply Equation 1 by 2 and Equation 2 by 5.</u>
- -10x + 10y = -20 [Equation 3]
- -15x + 10y = 15 [Equation 4]
<u>Subtract Equation 4 from Equation 3.</u>
- -10x + 10y + 15x - 10y = -20 - 15
- 5x = -35
- x = -7
- -3(-7) + 2y = 3
- 2y = -18
- y = -9
<u>Solution</u>
Answer:
40%
Step-by-step explanation:
Because you want to know the total percent the price increased so you add the amounts. 30% plus 10% makes 40%
Answer:225000 mice
Step-by-step explanation:
Mass of elephant=4500kg
Mass of mice=2x10^(-2)=2/100 kg
Let y be there number of mice
2/100 x y=4500
2y/100=4500
Cross multiply
2y=4500 x 100
2y=450000
Divide both sides by 2
2y/2=450000/2
y=225000
Answer:
The correct answer is x = 24.
Step-by-step explanation:
To solve this problem, we must remember that vertical angles have the same measure. This lets us set up the following equation:
m<a = m<b
If we substitute their values, we get the following:
5x - 24 = 3x + 24
To solve this equation, we can first subtract 3x from both sides of the equation.
2x - 24 = 24
Next, we can add 24 to both sides of the equation.
2x = 48
Finally, we can divide both sides of the equation by 2.
x = 24
Therefore, the answer is x = 24.
Hope this helps!
