math...please help asap

posted by .

Solve the following; use proper fractions in your answer:

1. 1/3 + 1/4 = 7/12
2. 4/5-2/3 = 2/15
3. 5/6 * 4/5 = 2/3
4. 3/7 divided by 6/8 = 4/7
5. 3 1/4 - 1 3/8 = 1 7/8.....is this a proper fraction?
6. 5 8/9 + 2 4/7 = 8 29/63..is this a proper fraction?


Reduce the following:
7. 15/9 = 5/3
8. 43/17 = 43/17
Conversions:

9. 13 centimeters =? meters
0.13 meters

10. 2.3 yards = ? inches
82.8 inches

11. 2 gallons = ? cups
32 cups

12. 15 years = ? seconds
473,040,000 seconds

13. 53 ounces = ? pounds
3.3125 pounds

Scientific Notation

Write the follow in proper scientific notation:

14. 3,141,592
3.141592 * 10 ^6

15. 437.234
4.37234 * 10^5

16. 0.004567
4.567 * 10^-3

Write the number in non-scientific notation:
17. 6.02 * 10^4
60200

18. 9.8 * 10^-2
.098

Solve the following in scientific notation:

19. 4.567 * 10^4 + 2.156 * 10^5
Answer: 2.61270*10^5 or would it be 10^4 since there is a zero on the end

20. (2.87*10^12)(1.56*10^3)
Answer: 4.4772*10^12???????? I'm not sure about the exponent on this one.

Percentages:

21. 25% of 36 is what numer? 9
22. 25 is what % of 125? 20%

Manipulating and Solving Equations:

Solve for the unknown in the following equation: d = 1/2gt^2
23. g = 2, t=4, d=?
d = 16
24. d=10, g=5, t=?
t=2

Solve the following eqeations for x:
25. 2x = 14
x=7
26. 3x+2y = 32
x= -2/3y+32/3
27. g=3yx^2
x = the square root of 9/3y
28. 12x/y = 3y
x= y^2/4


do u want to know if u are right?


7 increased by x

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Geometry :(

    this maths problem is wrecking my head.... 1.find the points of interesction of the line L and the circle k in the following L:x-2y=0 K:X Squared + y squared=25 I would solve both equations for y, and then you'll have a system with …
  2. math,algebra

    I'm not understanding so the answer should read as follows and steps: 15x^4y^9 divided by 3x^2y^2 = 5x^2y^7 Can you check this one for me. Direction. Simplify each of the following expressions where possible. 6x^2y^3+9x^2y^3 divided …
  3. math,correction

    Geometry. The volume of the box is represented by (x^2+5x+6)(x+5). Find the polynomial that represents the area of the bottom of the box. the diagram has the height being x+2 My answer is: A=(x+5)(x+3) -------------------------------------- …
  4. math

    Please can you help me with the following two questions?
  5. Math-Fractions

    How would I solve these two problems. (We have to simplify our answer) 5/7 divided by 8/21 12/7 divided by 9/21
  6. math

    Make up a story problem that fits the following division of fractions problem. Use a drawing and/or explain a model to help students understand how the division concept a;;lies to a situation involving fractions. 5/6 divided by 1/2 …
  7. 5th grade math (dividing fractions)

    Hi.. I need help figuring out this problem, sovling for x: 3 divided by x/9 = 5 and 2/5 I was able to solve: x divided by 3/4 = 6 by multiplying 6 x 3/4 = 4 1/2. Just not sure how to solve the first problem. If I change 5 2/5 into …
  8. Math

    Write the following decimals as fractions and find the Quotients. 4.5 divided by 0.9= 0.6 divided by 0.12= 1.2 divided by 0.5= 22.5 divided by 0.5= 0.18 divided by 0.03=
  9. math (long div.)

    please help me solve long division :( 1.)8 divided by 6984 (0.00114548) 2.)48 divided by 7584 (0.00632911) 3.)35 divided by 19933 (0.00175588) I know the answer to all of them but I don't know how to solve it the long way .
  10. math

    To solve 3/4 divided by 2/5, Elisha writes, 3/4 divided by 2/5 is the same as 15/20 divided by 8/20. So the answer to 3/4 divided by 2/5 is the same as 15 divided by 8. 1. Is Elisha's first claim, that 3/4 divided by 2/5 is the same …

More Similar Questions