John is making shelves for his room. he wants 3 shelves and each shelf requires 8 2/3 feet of lumber. how many feet of lumber does he need? simplify (or reduce) your answer, if necessary.

26 ft.

Step-by-step explanation:

1) First I would suggest swapping 8 and 2/3 from a mixed number into a fraction:

8 2/3=8+2/3=(24/3)+(2/3)=26/3

2) Next you just need to multiply the number of shelves John wants to make by the required amount of lumber. He wants to make 3 shelves and each one requires 8 2/3 ft. of lumber, which(as we found above) is 26/3 ft. of lumber:

3×(26/3)=26

So John will need 26 ft. of lumber for his shelving.

15

step-by-step explanation:

we are given the following expression and we are to solve it and find the product:

-13 × (-5)

solving the given expression in the standard order of solving a mathematical expression, beginning with the opening of brackets and then multiplying the terms and changing their signs.

-3 × -5 = 15 (answer is positive because when negative is multiplied with negative, it gives a positive answer)

a)(x-2)^2+(y-1)^2=9

step-by-step explanation:

(picture explains)