Answer:
Step-by-step explanation:
1. Understand that a straight line that is perpendicular to another will have an opposite slope to the same.
2. Convert the equation to slope-intercept form, to manipulate it more easily:
3. Take the slope, and get the opposite. Then replace the variables with the given points.
Therefore, your finished equation would be:
or
18) Let x be the number of coins in the pouch:
3x + 3 = 9; subtract 3 from each side:
3x + - 3 = 9 -3
3x = 6 . Now divide both side by 3:
x = 2 (in each pouch we have 2 coins)
19) SAME logic:
4x + 1 = 2x + 7; subtract 1 from each side:
4x + 1 - 1 = 2x + 7 - 1
4x = 2x + 6; now subtract 2x from each side:
4x - 2x = 2x + 6 - 2x
2x = 6 and x = 3 (each pouch contains 3 coins)
Answer:
C. 5 to 7
Step-by-step explanation:
This is because you are comparing the 5 books to the 7 pencils and you get a ratio of 5:7
Answer:
15/28 = 53.57%
Step-by-step explanation:
E 1 = select a red marble
E2 = select a red marble
E 1 ∩ E2
6/8 x 5/7
3/4 x 5/7 = 15/28 = 53,57%
Answer:
Step-by-step explanation:
1/3 πr²h
