Duane and mick are saving their money to build a tree house. duane adds $5 to their piggy bank every week. mick adds $2 every week. so far they have $45. how many weeks have they been saving money?

Set up the equation, 

5x+2x=45

x means weeks, x=weeks,

so 5x+2x=7x

which makes it, 

7x=45

Then just divide,



x=6.4 (rounded)

So, they have been saving for about, six and-a-half weeks.

Okay so for every triangle has three angles that always add up to 180 degrees. and to tell the difference between whether they are secure, right or obtuse is that acute: has one angle that is less than 90 degrees. right triangle means there is at least one angle that is exactly 90 degrees. and an obtuse angle has an angle that is bigger than 180 degrees. i’ll do #13 as an example: 13. 40 and 50 so if every triangle has 180 degrees 40+50= 90 degrees then180-90= 90 degrees so the third angle is 90 degrees and because this triangle has a 90 degree angle it means it is a right triangle

Aye i really don’t know this but i need more point so i am guessing it’s c. 2.0or you can use other apps to you get the answer