evaluate the expression 5b-ac when a=-4, b=2, and c=0.5
To evaluate the expression 5b - ac when a=-4, b=2, and c=0.5, we substitute the given values into the expression:
5b - ac = 5(2) - (-4)(0.5)
This simplifies to:
5(2) - (-4)(0.5) = 10 - (-2) = 10 + 2 = 12
Therefore, the value of the expression 5b - ac when a=-4, b=2, and c=0.5 is 12.
To evaluate the expression 5b - ac, substitute the values a = -4, b = 2, and c = 0.5 into the expression.
5b - ac becomes 5(2) - (-4)(0.5).
Now, calculate each part of the expression:
5(2) = 10
(-4)(0.5) = -2
Substituting these values back into the expression:
5b - ac = 10 - (-2).
To subtract a negative number, we can rewrite it as a positive number:
10 - (-2) = 10 + 2.
Finally, calculate:
10 + 2 = 12.
Therefore, when a = -4, b = 2, and c = 0.5, the expression 5b - ac evaluates to 12.
To evaluate the expression 5b - ac when a = -4, b = 2, and c = 0.5, you need to substitute the given values into the expression and perform the necessary calculations.
First, substitute the values of a, b, and c into the expression:
5(2) - (-4)(0.5)
Next, simplify the multiplication:
10 - (-2)
To subtract a negative number, you can change it to addition:
10 + 2
Finally, perform the addition:
12
Therefore, the value of the expression 5b - ac, when a = -4, b = 2, and c = 0.5, is 12.