Answer:
94
Step-by-step explanation:
So
376= x + 3x
Where x is the hambugers and 3 x is cheeseburgers
so it is the same as
376= 4x
divide both sides by 4
x= 94
we can check by tripling x = 283 and adding the hamburgers we found to be 94 which gives us 376
Answer:
26
Step-by-step explanation:
Answer: <em>(-2, -1) and (3, 14).</em>
Step-by-step explanation:
![\left \Bigg \{ { \bigg{y=x^{2} +2x-1} \atop \bigg {y-3x=5}} \right. ; \left \Bigg \{ { \bigg{y=x^{2} +2x-1} \atop \bigg {y=5+3x}} \right.](https://tex.z-dn.net/?f=%5Cleft%20%5CBigg%20%5C%7B%20%7B%20%5Cbigg%7By%3Dx%5E%7B2%7D%20%2B2x-1%7D%20%5Catop%20%20%5Cbigg%20%7By-3x%3D5%7D%7D%20%5Cright.%20%3B%20%5Cleft%20%5CBigg%20%5C%7B%20%7B%20%5Cbigg%7By%3Dx%5E%7B2%7D%20%2B2x-1%7D%20%5Catop%20%20%5Cbigg%20%7By%3D5%2B3x%7D%7D%20%5Cright.)
<em>x² + 2x - 1 = 5 + 3x</em>
<em>x² + 2x - 1 - 5 - 3x = 0</em>
<em>x² - x - 6 = 0</em>
<em />
<em />
<em>y = 5 + 3x</em>
<em>y₁ = 5 + 3 * (-2) = -1</em>
<em>y₂ = 5 + 3 * 3 = 14</em>
<em>The pair of points representing the solution set of this system of equations is (-2, -1) and (3, 14).</em>
7.
Convert 41% into a decimal:
![41 \div 100 = 0.41](https://tex.z-dn.net/?f=41%20%5Cdiv%20100%20%3D%200.41)
Multiply 48 by this decimal:
![0.41 * 48 = 19.7](https://tex.z-dn.net/?f=0.41%20%2A%2048%20%3D%2019.7)
The answer is
19.7.
8.
Convert 35% into a decimal:
![35 \div 100 = 0.35](https://tex.z-dn.net/?f=35%20%5Cdiv%20100%20%3D%200.35)
Multiply 22 by this decimal:
![0.35 * 22 = 7.7](https://tex.z-dn.net/?f=0.35%20%2A%2022%20%3D%207.7)
The answer is
7.7.