Answer:
All real numbers
Step-by-step explanation:
Always true
Plug in 3 into the equation.
y= 5(3) +8
Combine like terms.
y= 15+ 8
y= 23
I hope this helped!
Answer:
m+k=hw
m=hw-m
always conside BODMAS rule and subject
Answer: C. 42
Step-by-step explanation:
(3x + 3) is the same angle as 129.
So, you have to equal them to each other.
3x + 3 = 129
Now you solve.
Subtract 3 from each sides.
3x = 126
Divide 3 from each side.
x=42
So Serena is 10, and her mother is 3 times ten, so her mother is 30. And if we take 30 minus 10 we will have the age of the mom when Serena was born, which is 20. So we know that when Serena is 20, her mother will be 40. So when Serena is 20, she will be half of her mother's age. 40 × 0.5 = 20.