math...please help asap

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

  1. 👍 0
  2. 👎 0
  3. 👁 125

Respond to this Question

First Name

Your Response

Similar Questions

  1. Algebra

    solve x+21/x+3

    asked by Cynthia on April 4, 2008
  2. math

    find counterexample the quotient of two proper fractions is a proper fraction

    asked by jj on August 18, 2009
  3. geometry

    i'm in my geometry book and i don' get number 28. it says the quotient of two proper fractions is a proper fraction. i'm a post to find a counterexample. I NEED HELP

    asked by jennyo on August 18, 2009
  4. math,algebra,correction

    x = (-5 +/-ã85)/10 do you mean -0.5 or -5 is this right? solve by using the quadratic formula: 5x^2+5x=3 i get: x= -0.5 (+/-)((sqrt(85)/(5)) check up on your proper use of the formula I got x = (-5 +/-√85)/10 which, if you

    asked by jasmine20 on April 14, 2007
  5. arithmetic

    a stock clerk had 600 pads on hand. He then issued 3/8 of his supply of pads to division X,1/4 to division Y and 1/6 to division Z. The number of pads remaining in stock is? I don't get how to solve this problem. In arithmetic

    asked by chrissy on July 28, 2007
  6. Math

    How do I convert improper fractions into proper fractions?

    asked by Rick on May 3, 2017
  7. 8th Grade Algebra-Radicals:Answer Check

    Write each expression in simplest form. ( means square root 4. 3(11 + 4(11 Answer: 8(11 7. 7(2 - 2(8 Answer: 1(2 ?? 8. (48 + (75 Answer: 9(3 9.(3(10) Answer: 19 + 6ã10 10. (27/64 (Fractions) Answer: 3(3/8 ?? 11.

    asked by Joy on January 14, 2009
  8. Maths

    Hi everyone. I've been struggling with the following maths question for a while and I'm not sure where I went wrong. 2(3x/5 - 1) = 10 and I need to solve for x I first tried turning everything into fractions over 5 but that gave

    asked by Rissa on November 29, 2014
  9. Math

    Describe two ways to determine the larger of two fractions. A. Compare fractions by writing fractions as mixed numbers B. Compare fractions with the same denominator by comparing the numerators and compare fractions with different

    asked by Tina on October 25, 2017
  10. algebra

    i have 2 solve by elimination an i keep gettin fractions when the answer is (-3,-3) my teacher gave me the answer an problem but she wants me 2 work it out idk how i keep gettin fractions the problem is: -3x-4y=21 8x-5y=-9 please

    asked by angel on January 31, 2011

More Similar Questions