Last year Johnny took 4.5 hours to put holiday lights on his house by himself. The following year, his wife, Amanda helped him. Together, it took them 2.88 hours to put the lights up. How long would Amanda take to put up the lights if she did it by herself?

1.26

Step-by-step explanation:

It might be 1.26 becuase it took Johnny 4.50 hours to do it by him self and now with help it took him 2.88. What I did was subtract 4.50 by 2.88 to see how much it took Johnny him self which I got 1.62. So if 1.62 is less than 2.88 there is still numbers left over so what i did was 2.88 minus 1.62 so I could get the remainding hours which would be the total amount of hours that Amanda did.

= 5

step-by-step explanation:

to find the 15th term substitute n = 15 into the nth term formula

= (- 3 × 15 ) + 50 = - 45 + 50 = 5

you are playing an adventure game on your computer. you come across a troll who won't let you pass and there is no other way to get to the other side of the river except over the bridge he is guarding.

the troll is a nerd. he takes great delight in watching people struggle with his problems. very few get them. he only gives you one chance and then he changes the puzzle. you have to solve this one.

before you are four blocks. they are numbered 11,6, -7,21.

he tells that the answer he wants is minus and between -1 and - 2. you can use +, -, ×, ÷   ( and ) as many times as you like or no times at all. you don't like the way he's looking at you, but you need to cross the bridge. what do you do?