What digit out of 1, 3,5, and 9 would complete the second factor so that the product will have 2 decimal places for 7.2 x 4.

When we have multiple possibilities for a number, we can replace it with a letter (or variable) -- here, we can put the second decimal place for 4.6_ as y. Therefore, when we multiply the two numbers, 7.2*4.6y=

        7.2

    x  4.6y

        7.2*y

       4.320

     28.800  

Therefore, if we add 28.8 and 4.32 up, we are at 33.12. Aligning the zeros, it is clear that if the last digit of 7.2*y is not 0, this equation will end up having more than 2 decimal places. Therefore, using a little guess and check, we have 7.2*1=7.2, 7.2*3=21.6, 7.2*5=36.0, and 7.2*9=648. Therefore, 5 is our answer.

Feel free to ask further questions, and Happy Holidays!

10/60

step-by-step explanation:

if you divide 10 by 60 the answer is 0.166666 while if you divide or solve the other problems it equals 0.6

let x be the money she spent so that she can earn the free t-shirt.

since, she already spent $112.49

⇒

also, as per the statement: jennifer must spend $250 or more in order to qualify for a free t-shirt at the store.

then,

we have an inequality i.,e

subtract 112.49 from both sides we get;

therefore, $137. 51 more money does jennifer need to spend so that she can earn the free t-shirt