Hello! i am doing a practice test for school & i need some help.
1 answer:
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Answer:
1.
2.
4. 22
Step-by-step explanation:
1.
2.
Where a is the side
We are given an area o square =
So,
4. We are given that the solution of quadratic equation -9 and 9
So, equation becomes:
So, in the given equation
z should be the number from which if we subtract 103 so we get 81
Substitute z = 22
Thus the value of z is 22
Answer:
37
Step-by-step explanation:
substitute the given values for x and y into the expression
4x² + 2y
= 4(3)² + 2( )
= 4(9) + 1
= 36 + 1
= 37
