Add parenthesis to the expression 7-3x2+6=7

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  no parentheses needed

  (7 -3×2) +6 = 7

  7 -(3×2) +6 = 7

  (7 -(3×2)) +6 = 7

Step-by-step explanation:

The equation is correct as written: no parentheses are needed.

If parentheses are added, they should not change the way the expression is evaluated. That is, they can be added around the product, and they can be added around the difference of the first two terms.

answer: option a.

step-by-step explanation:

you know that the quadrilateral opqr ( a four sided figure) is inscribed in circle. this means that all its vertices are on the circle.

then, by definition, the opposite angles of the quadrilateral are supplementary, this means that the sum of their measures is 180 degrees.

you can observe in the figure that the angles ∠opq   and the angle ∠orq   are opposite, therefore:

then, can be used to d to calculate the measure of ∠opq