Answer:
100rz cents.
Step-by-step explanation:
The price of cement with respect to its weight is proportional.
So, we can write p ∝ w
where p is the price in dollars and w is the weight of the cement in pounds.
⇒ p = kw ............... (1) {Where, k = proportionality constant}
Given that, one pound of cement cost r dollars.
So, from equation (1), we can write
r = k(1)
⇒ k = r
So, the equation becomes p = rw .............. (2)
Now, for w = z pounds, the price will be p = rz dollars. {From equation (2)}
Therefore, the price of z pounds in cents will be 100rz cents. (Answer)
Answer:
4
Step-by-step explanation:
3n-2-n=6
2n-2=6
2n=8
n=4
<h2>
Answer:</h2>
The number of kilograms a 19 m beam can support is:
378.9474 kg
<h2>
Step-by-step explanation:</h2>
It is given that:
The weight W that a horizontal beam can support varies inversely as the length L of the beam.
Let k denote the constant.
This means that the weight W and Length L is related as:

Suppose that an 8 dash m beam can support 900 kg.
This means that L=8 and W=900
Then,

Now , we are asked to find the value of W when L= 19
i.e.
