Which expression has a positive value?
(negative 5) (negative 9)
2 minus 4
12 divided by (negative 4)
Negative 3 + (negative 7)

The answer is (-5)(-9).

Step-by-step explanation:

As you multiply 2 negative number together, it will equals to positive number :

(-5)×(-9) = 45

no

step-by-step explanation:

2-7=-5

7-2=5

when you combing like terms for ech expression, 5 and -5. these numbers are not equal to each other.

56.6

step-by-step explanation:

the ratio of the perimeters is equal to the scale.

the ratio of the areas is equal to the square of the scale.

34 / 20 = k

a / 19.6 = k²

substituting:

a / 19.6 = (34 / 20)²

a = 19.6 (34 / 20)²

a ≈ 56.6