Consider the following geometry problems in 3-space Enter T or F depending on whether the statement is true or false.1. Two planes parallel to a third plane are parallel 2. Two lines parallel to a plane are parallel 3. Two lines orthogonal to a third line are parallel 4. Two lines parallel to a third line are parallel 5. Two planes parallel to a line are parallel 6. Two lines orthogonal to a plane are parallel 7. Two lines either intersect or are parallel 8. Two planes either intersect or are parallel 9. Two planes orthogonal to a line are parallel 10. A plane and a line either intersect or are parallel 11.Two planes orthogonal to a third plane are parallel

Step-by-step explanation:

1) Two planes parallel to a third plane are parallel - True

2) Two lines parallel to a plane are parallel - False

3) Two lines orthogonal to a third line are parallel - False

4) Two lines parallel to a third line are parallel - True

5) Two planes parallel to a line are parallel - False

6) Two lines orthogonal to a plane are parallel - True

7) Two lines either intersect or are parallel - False

8) Two planes either intersect or are parallel - True

9) Two planes orthogonal to a line are parallel - True

10) A plane and a line either intersect or are parallel - True

11) Two planes orthogonal to a third plane are parallel - False

15

step-by-step explanation:

we are given the following expression and we are to solve it and find the product:

-13 × (-5)

solving the given expression in the standard order of solving a mathematical expression, beginning with the opening of brackets and then multiplying the terms and changing their signs.

-3 × -5 = 15 (answer is positive because when negative is multiplied with negative, it gives a positive answer)

example 2 – simplify: step 1: completely factor both the numerators and denominators of all fractions. step 2: change the division sign to a multiplication sign and flip (or reciprocate) the fraction after the division sign; essential you need to multiply by the reciprocal. step 3 : cancel or reduce the fractions.