Answer:
3Y - 4X - 4
Step-by-step explanation:
Answer:
multiply all terms in the top equation by 2
multiply all terms in the second equation by -7. it would then add the two equations together to cancel out the variable x
You will then have two equations in terms of y
solve for y and either equation then substitute that value for y into the other equation then solve for x
<span>The expression for the total price paid for all snacks (P pence)= 4n Pence
will be; P=4n.
Calculation:
let the total price for the four snacks be P pence.
let the four snacks be s1,s2,s3, and s4;
their prices are:
s1=n pence; s2= n pence; s3=n pence; s4= n pence.
therefore;
the total price paid for all snacks (P pence)= s1 price +s2 price +s3 price +s4 price = n+n+n+n= 4n
hence; P=4n
i.e. the total price paid for all snacks (P pence)= 4n Pence</span>
Answer:
10. SAS
11. SAS
12. SAS
13. SSS
14. SSS
15.ASA
Step-by-step explanation:
