Find the value of c such that the expression is a perfect- square trinomial. x^2+28x+c

Ithink the answer is d.

This law is sometimes called the grouping property. as you can see, regardless of how the numbers are grouped, the answer is still 13. the associative law of multiplication is similar to the same law for addition. it says that no matter how you group numbers you are multiplying together, you will get the same answer.

That is correct 8.25 multiplied by 7 is 57.75

The hypotenuse in a right triangle is the longest side.to explain whether a triangle is a right triangle, we have to apply pythagoras: 13² = 12² + 5²169 = 144 + 25169 = 169, then this triangle is a right triangle