Answer:
B
Step-by-step explanation:
Answer:
Step-by-step explanation:
( 5 - x) ( 4-x )
=5(4-x)-x(4-x)
=20-5x-4x+x^2
=x^2-9x+20
hope it helps...
<u>Answer:</u>
Two times the difference of a number x and 7 plus 10.
<u>Step-by-step explanation:</u>
We are to write a phrase which matches the following algebraic expression below:
![2 ( x − 7 ) + 1 0](https://tex.z-dn.net/?f=%202%20%28%20x%20%E2%88%92%207%20%29%20%2B%201%200%20)
We can see that there is a bracket with a coefficient outside it so we can express it as:
<em>'Two times the difference of a number x and 7'.</em>
While + 10 can be added to it to complete the phrase:
Two times the difference of a number x and 7 plus 10.
Answer:
30 envelopes
Step-by-step explanation:
If the Cost of 135 envelopes is Rs 45, then;
135 envelopes = Rs. 45
To get the amount of envelopes Rs. 10 can buy, we can write;
x = Rs. 10
Divide both expressions
135/x = 45/10
45x = 135 * 10
45x = 1350
x = 1350/45
x = 30
Hence Rs. 10 can purchase 30 envelopes
Whats the following 3 lol thats where your information is from maybe write it down?