Answer:

Step-by-step explanation:
you first need to change the mixed number to an improper fraction

then multiply the second fraction by 2 so that the denominator is the same in both fractions


Answer:
that would be 3/4
Step-by-step explanation:
Answer:
405
Step-by-step explanation:
Answer:
Square
Step-by-step explanation:
Plot points A (10,-4), B (6,-7), C (3,-3), D (7,0) on the coordinate plane.
Find slopes of the sides:

The slopes of opposite sides are the same, so opposite sides are parallel. The slopes of adjacent sides have product of -1, then adjacent sides are perpendicular.
Find the lengths of all sides:

All four sides are of the same length.
Quadrilateral ABCD is a square (all sides of equal length and perpendicular)
Answer:
<u>131 seats</u> are in the 30th row.
Step-by-step explanation:
The theater is designed with the first row there are 15 seats, in second row 19 seats and in the third row there are 23 seats.
Now, to find the number of seats in the 30th row.
So, we get the common difference(
) from the arithmetic sequence first:

Thus,
So, the first tem
= 15.
The number of last row (
) = 30.
Now, to get the number of seat in the 30th row we put formula:





Therefore, 131 seats are in the 30th row.