With mental math, you can perform equations quickly and efficiently. They also help you to develop your own strategies and solve more complex math equations. Hope this helps;)

7 0

3 years ago

For every 3 packages that Marcella wraps, she uses 12 of a roll of wrapping paper.

nikklg [1K]

For every 3 packages, she uses 1/2 a roll of wrapping paper

if she uses 2 1/2 rolls.....

(2 1/2) / (1/2) ....* 3
(5/2) / (1/2).....* 3
(5/2 * 2) * 3
5 * 3 =
15 packages <===

7 0

3 years ago

HELP ME THANKS +×+

Tresset [83]

Answer:

$hypotenuse = \sqrt{ {height}^{2} + {adjacent}^{2} } \\ = \sqrt{ {11}^{2} + {60}^{2} } \\ = \sqrt{3721} \\ = 61 \: inches$

4 0

3 years ago

Read 2 more answers