Answer:
Question 6: -8
Question 7: C
Step-by-step explanation:
Question 6:
The reason question 6 is -8 is because of the distance in between each number, e.g -7 and -15. This is not to be confused with + 8 each time that would make the sequence 9, 18, 27.
Question 7:
The way we solve this question is using the nth term rule, whatever is before the n is the times tables we follow. So if it is 2n the sequence would be 2, 4, 6, 8 etc. However when we add something like the -2 we do the 2 times tables but this time we -2 for each one. Example: 2 - 2 = 0 so the first number of the sequence is 0, Example 2: 4-2 = 2 so the second number of the sequence is 2.
ANSWER
B. x=3,y=2
EXPLANATION
The given equations are

and

We add the two equations to eliminate y.
This implies that that:

Simplify:

Divide both sides by 2.

We put x=3 into any of the equations to find y.
Let us substitute x=3 into equation (1) to get:



Divide both sides by -3 to get;

The solution is therefore x=,y=2.
Answer:
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If you're asking if 3/4 is less than 1/2, then it's a true statement.
Answer:
15
Step-by-step explanation:
Let 'l' be the length of the other leg
Using pythagoras theorem,
25² = 20² + l²
625 = 400 + l²
225 = l²
l = 15