Answer:
3. 50
4. 1
Step-by-step explanation:
3.
-5a + 2b - 6c
Substitute the variables, knowing that:
a = -6, b = 4, and c = -2
-5(-6) + 2(4) - 6(-2)
Multiply -5 and -6.
30 + 2(4) - 6(-2)
Multiply 2 and 4.
30 + 8 - 6(-2)
Multiply -6 and -2.
30 + 8 + 12
Add 30 and 8.
38 + 12
Add 38 and 12.
50
4.
√(5x) + 2y
Substitute the variables, knowing that:
x = 5 and y = -2
√(5(5)) + 2(-2)
Multiply 5 and 5.
√(25) + 2(-2)
Multiply 2 and -2.
√(25) - 4
Take the square root of 25.
5 - 4
Subtract 4 from 5.
1
Answer = 2 plus 5 times n
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I heard it before somewhere
Hope I've been any help to you
