Molly completes 3/10 of her science project in 4/5 hour. How much of her science project does Molly

Molly completes 3/10 of her science project in 4/5 hour. How much of her science project does Molly complete per hour?

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This Post Has 4 Comments

  1. 8u18w45x4a18

    step-by-step explanation:

                      1

    simplify   —

                      2

                                                                                1

      ((•(u9))•(w17))•(•((4•(a3))•(•(•a15)•u9))

                                                                                2

    equation at the end of step   2   :

                                                                                a15

      ((•(u9))•(w17))•(•((4•(a3))•(•(•u9))

                                                                                  2

    equation at the end of step   3   :

                                                                              u9a15

      ((•(u9))•(w17))•(•((4•(a3))•(•(

                                                                                  2

    equation at the end of step   4   :

                                                                      -u9a15

      ((•(u9))•(w17))•(•(22a3•w28))•

                                                                            2    

    equation at the end of step   5   :

                                                                      -u9a15

      ((0 -   ((22u9 • w17) • x4)) • 22w28a3) •

                                                                            2  

    step   6   :

    multiplying exponential expressions :

        u9 multiplied by u9 = u(9 + 9) = u18

    multiplying exponential expressions :

        a3 multiplied by a15 = a(3 + 15) = a18

    dividing exponents :

        24   divided by   21   = 2(4 - 1) = 23

    final result :

      8u18w45x4a18

  2. 3/8 project per hour

    Step-by-step explanation:

    Take the part of the project done and divide by the time

    3/10 project ÷ 4/5 hours

    Copy dot flip

    3/10 * 5/4

    Rewriting

    3/4 * 5/10

    3/4 * 1/2

    3/8 project per hour

  3. 3/8

    Step-by-step explanation:

    3/10 div 4/5

    Divide 3/10=0.3 by 4/5=0.8 by multiplying 3/10=0.3 by the reciprocal of  4/5=0.8.

    3/10x(5/4)

    Multiply 3/10 =0.3 times 5/4 =1.25 by multiplying numerator times numerator and denominator times denominator.

    3x5/10x4

    Do the multiplications in the fraction 3×5/10x4

    15/40 = 0.375

    Reduce the fraction  15/40 = 3/8 =0.375 to lowest terms by extracting and canceling out 5.

    3/8

  4. answer:

    step-by-step explanation:

    here, the total dishes = 10

    dishes having meat = 3 ( chicken, meatloaf and hamburger )

    thus, the probability of having meat on the chosen dishes = number of dishes having meat / total dishes

    =

    therefore, the probability of not having meat = 1- the probability of having meat on the chosen dishes

    =

    =

    =

    ⇒ option b is correct.

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