Answer:
Let's simplify step-by-step.
14xy+3xy+2x(y−17)
=19xy−34x
6x^2+5x-6 would be your answer! :)
The speed of wind and speed of plane in still air are 23 and 135
km/h respectively.
<u>Step-by-step explanation:</u>
Let the speed of wind and speed of plane in still air are w and p km/h respectively.
The effective speed on onward journey was
................(1)
The effective speed on return journey was
..............(2)
Adding equation (1) and equation (2) we get,
⇒ ![(p+w)+(p-w) = 158+112](https://tex.z-dn.net/?f=%28p%2Bw%29%2B%28p-w%29%20%3D%20158%2B112)
⇒ ![2p = 270](https://tex.z-dn.net/?f=2p%20%3D%20270)
⇒ ![p = 135](https://tex.z-dn.net/?f=p%20%3D%20135)
Putting value of
in
we get:
⇒ ![p+w=158](https://tex.z-dn.net/?f=p%2Bw%3D158)
⇒ ![135+w=158](https://tex.z-dn.net/?f=135%2Bw%3D158)
⇒ ![w=23](https://tex.z-dn.net/?f=w%3D23)
Therefore ,The speed of wind and speed of plane in still air are 23 and 135
km/h respectively.
Answer:
Step-by-step explanation:
We have been given that a kitchen floor has
tiles in an area of
square feet.
To find the number of tile in one square foot, we will divide total number of tiles by total area as:
![15\frac{1}{2}\div 2\frac{1}{5}](https://tex.z-dn.net/?f=15%5Cfrac%7B1%7D%7B2%7D%5Cdiv%202%5Cfrac%7B1%7D%7B5%7D)
Convert mixed fractions into improper fractions:
![\frac{31}{2}\div \frac{11}{5}](https://tex.z-dn.net/?f=%5Cfrac%7B31%7D%7B2%7D%5Cdiv%20%5Cfrac%7B11%7D%7B5%7D)
Now, we will convert the division problem to multiplication problem by flipping the 2nd fraction as:
Therefore,
tiles are in one square foot.
Answer:
1) 10mn - 10×m×n
2)15m - 15×m
10×m×n×+15×m
=10mn+15m
factorize
common number(divisor) = 5
5m(2n+3)
5m*2n=10mn
5m*3=15m