Answer:
Step-by-step explanation:
Number of cows increased=60
Old quality of milk consumed=12.8litres
New Increase in milk consumed=15litres
Therefore the number of cows in the farm if the quality of milk is 1340litres=y
Therefore, 1cow =15litres
y cows= 1340litres
Crossmultiply:
15litres×ycows=1340litres
Make y the subject of formula
y= 1340÷15
y=89.33cows
Therefore,the number of cows on the farm if farmer gets 1340litres of milk would be 89cows.
Answer:
30 units
Step-by-step explanation:
I'm sorry if this is wrong
The equivalent expression is
.
We have the following expression -
![\frac{7^{-3} }{7^{-5} }](https://tex.z-dn.net/?f=%5Cfrac%7B7%5E%7B-3%7D%20%7D%7B7%5E%7B-5%7D%20%7D)
We have to find its equivalent value.
<h3>What is the equivalent expression of the following expression-</h3>
![f(x, y) =\frac{A^{x} }{A^{y} }](https://tex.z-dn.net/?f=f%28x%2C%20y%29%20%3D%5Cfrac%7BA%5E%7Bx%7D%20%7D%7BA%5E%7By%7D%20%7D)
In order to divide two exponents with same base, we use the 'Quotient property of exponents.
The equivalent expression can be written as -
f(x, y) = ![A^{x} A^{-y} = A^{x-y}](https://tex.z-dn.net/?f=A%5E%7Bx%7D%20A%5E%7B-y%7D%20%3D%20A%5E%7Bx-y%7D)
In the question given we have -
Using the property discussed above -
=
= ![7^{2}](https://tex.z-dn.net/?f=7%5E%7B2%7D)
Hence, the equivalent expression is
.
To solve more questions on exponents, visit the link below -
brainly.com/question/17173276
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In problem 16 I think the answers is b