When a point P(a, b) is reflected about the y-axis, the coordinates of the reflected point are P'(-a, b).
Thus, the reflection of point (3, 7) is (-3, 7), as shown in the picture.
Answer: (-3, 7)
Add 1/6 teaspoon and 1/8 teaspoon. The LCD here is 24, so we're adding
4/24 to 3/24, obtaining 7/24 (teaspoon of pepper, total).
Answer:
3x + 4y = 16 The rule is you can do any valid operation on both sides of an equation and it will still be equal. Subtract 4y.
3x = -4y + 16 Divide by 3.
x = -4y/3 + 16/3 Answer B.
Answer:
QRT = 47, TRS = 133
Step-by-step explanation:
Since QRS is a line, QRT + TRS = 180.
![QRT+TRS=180\\3x+5+10x-7=180\\](https://tex.z-dn.net/?f=QRT%2BTRS%3D180%5C%5C3x%2B5%2B10x-7%3D180%5C%5C)
Then, solve for x. Combine like terms.
![13x-2=180\\13x=182\\x=14](https://tex.z-dn.net/?f=13x-2%3D180%5C%5C13x%3D182%5C%5Cx%3D14)
Then, plug in 14 for x.
![1. (3*14+5)\\\\QRT = 47\\\\2. (10*14-7)\\\\TRS = 133](https://tex.z-dn.net/?f=1.%20%283%2A14%2B5%29%5C%5C%5C%5CQRT%20%3D%2047%5C%5C%5C%5C2.%20%2810%2A14-7%29%5C%5C%5C%5CTRS%20%3D%20133)