Answer:0.666666666666 or 2/3
Step-by-step explanation:
What you are doing here is actually pretty simple, since you have a variable (t) and you have its value (8/9) all that you have to do is place the value where your variables is in the equation. 8/9 x 3/4 = 0.666666666666 or 2/3! what you would do to get the final answer is multiply across, so, 3x8 =24 and 4x9 = 36, so far you're at 24/36 which you'd need to simplify to get 2/3!
Answer:the present age of the father is 45 years
Step-by-step explanation:
Let x represent the present age of the father.
Let y represent the present age of the son.
Let z represent the age of the daughter.
A father is 3 times as old as his son. This means that
x = 3y
his daughter is 3 years younger than the son. It means that
z = y - 3
The sum of their ages 3 years ago was 63. This means that
x - 3 + y - 3 + z - 3 = 63
x + y + z - 9 = 63 - - - - - - - - - - 1
Substituting x = 3y and z = y - 3 into equation 1, it becomes
3y + y + y - 3 - 9 = 63
5y - 12 = 63
5y = 63 + 12 = 75
y = 75/5 = 15
x = 3y = 3 × 15
x = 45
z = y - 3 = 15 - 3
z = 12
I am pretty sure it is when u use a bar model to help do division...
The slope is -1/4 and the y-intercept is 1.
Hope this Helps!!