Hi there, I', new to mathhelp and also to algebra. I don't know where to turn and I found you guys. Please help me. How do you do these problems. I'm taking a refresher course, so I can take some classes in collage. I use to get answer sheet, but today nothing and I'm lost Thanks
1 ) 1. Subtract 16 - (-30) - 42.
2 ) 2. Evaluate b^2 - 3ab when a = 3 and b = -2.
3 ) 3. The lowest temperature recorded in North America is -81.4 degrees F. The highest temperature recorded is 134 degrees F. Find the difference between these two extremes.
4 ) 4. Solve b+3/4 = 5/8.
5 ) 5. Solve 3x - 2 >= 6x + 7
6 ) 6. The sum of two integers is fifteen. Eight times the smaller integer is one less than three times the larger integer. Find the integers.
7 ) 7. A jogger runs a distance at a speed of 8 mph and returns the same distance running at a speed of 6 mph. Find the total distance that the jogger ran if the total time running was 1 hour and 45 minutes.
8 ) 8. Find the area of a circle with a diameter of 9 cm.
9 ) 9. Find the supplement of a 105 degree angle.
10 ) 10. How much more pizza is contained in a pizza with a radius of 10 in. than in one with a radius of 8 in.? Round to the nearest hundredth.
11 ) 11. New carpet is installed in a room measuring 18 ft. by 14 ft. Find the area of the room in square yards. (9ft^2 = 1 yd^2)
12 ) 12. Find the area of a right triangle with a base of 8 m and a height of 2.75 m.
13 ) 13. Find the ordered pair solution of y = 2x+6 that corresponds to x = -3. (1pt)
Max Characters: 400
14 ) 14. Is the line that passes through the points (-3,1) and (2,5) perpendicular to the line that passes though the points (-4,1) and (0,6)?
15 ) 15. Given P(x) = 3x^2 - 2x + 1, evaluate P(2).
16 ) 16. Solve for x and y if 5x+2y = -23 and 2x+y = -10.
17 ) 17. Solve for x and y if 3x - y = 2x +y = 1 and 5x +2y = y +6.
18 ) 18. Simplify [(2ab)^3]^2
19 ) 19. Simplify (3a^2 - 9a) - (-5a^2 + 7a - 6)
20 ) 20. Simplify (a+b)^2 + (a-b)^2 (1pt)
1 ) 1. Subtract 16 - (-30) - 42.
2 ) 2. Evaluate b^2 - 3ab when a = 3 and b = -2.
3 ) 3. The lowest temperature recorded in North America is -81.4 degrees F. The highest temperature recorded is 134 degrees F. Find the difference between these two extremes.
4 ) 4. Solve b+3/4 = 5/8.
5 ) 5. Solve 3x - 2 >= 6x + 7
6 ) 6. The sum of two integers is fifteen. Eight times the smaller integer is one less than three times the larger integer. Find the integers.
7 ) 7. A jogger runs a distance at a speed of 8 mph and returns the same distance running at a speed of 6 mph. Find the total distance that the jogger ran if the total time running was 1 hour and 45 minutes.
8 ) 8. Find the area of a circle with a diameter of 9 cm.
9 ) 9. Find the supplement of a 105 degree angle.
10 ) 10. How much more pizza is contained in a pizza with a radius of 10 in. than in one with a radius of 8 in.? Round to the nearest hundredth.
11 ) 11. New carpet is installed in a room measuring 18 ft. by 14 ft. Find the area of the room in square yards. (9ft^2 = 1 yd^2)
12 ) 12. Find the area of a right triangle with a base of 8 m and a height of 2.75 m.
13 ) 13. Find the ordered pair solution of y = 2x+6 that corresponds to x = -3. (1pt)
Max Characters: 400
14 ) 14. Is the line that passes through the points (-3,1) and (2,5) perpendicular to the line that passes though the points (-4,1) and (0,6)?
15 ) 15. Given P(x) = 3x^2 - 2x + 1, evaluate P(2).
16 ) 16. Solve for x and y if 5x+2y = -23 and 2x+y = -10.
17 ) 17. Solve for x and y if 3x - y = 2x +y = 1 and 5x +2y = y +6.
18 ) 18. Simplify [(2ab)^3]^2
19 ) 19. Simplify (3a^2 - 9a) - (-5a^2 + 7a - 6)
20 ) 20. Simplify (a+b)^2 + (a-b)^2 (1pt)