Select all the correct answers.
observe the expression below and select the true statement(s)

3y(7 + 2x) + 9xy - 10

1. the "(7 + 2x)" in the first term is a factor.
2. the "9" in the second term is a coefficient,
3. the "3" in the first term is a factor
4.the "10" in the third term is a coefficient
5. the "2" in the first term is a constant,
6. the "x in the second term is an exponent

The true statements are:

The "(7 + 2x)" in the first term is a factor.

The "9" in the second term is a coefficient.

The "3y" in the first term is a factor.

Step-by-step explanation:

last option

step-by-step explanation:

given that δdef is right and isoceles,

assuming that side df is the hypotenuse means that de an ef are the other 2 sides that intersect at 90° and are of equal length.

because they are of equal length, we can say that they are congruent

because they intersect at 90°, their slopes must be opposite reciprocals.

only the last option satisfies these conditions.