Final answer:
To find the value of t given the equation (y+z):t = 4:15 with y = 1.5 and z = 4.5, we first find the sum of y and z, then cross-multiply the ratio to find that t = 22.5.
Step-by-step explanation:
The student is asked to find the value of t given that x = -35, y = 1.5, and z = 4.5, with the ratio (y+z):t = 4:15. First, calculate the sum of y and z:
Now, we know that the ratio of y+z to t is 4:15, which can be written as a fraction:
\(\frac{y+z}{t} = \frac{4}{15}\)
Substitute the value of y+z into the equation:
\(\frac{6.0}{t} = \frac{4}{15}\)
Cross-multiply to solve for t:
15 \(\times\) 6.0 = 4 \(\times\) t
90 = 4t
t = \(\frac{90}{4}\) = 22.5
Therefore, the value of t is 22.5.