icecreamlover

well well well, looks like someone's back!...

Welcome back CPhill!...

or sanity

air...

a meme...

I don't even need to explain...

for problem 1 you can try using the pythagorean theorem
for problem 2, solve  180 - (135 +30)

and btw,...the vertex is    (-3,4)

Here's a hint...

try to solve one of the equations in terms of one of the variables...

the plug that equation into the other equations...

I was able to find the answer...it's   88

I used google translate    Я использовал переводчик гугл...


The camp has an equal number of boys and girls. The number of children under the age of 13 is 2 times higher than the number of children over 13 years of age. If the same number is written to the right and left of the number 4, the number of children in the camp is formed. What is this number?

В лагере отдыхает равное количество мальчиков и девочек. Количество детей в возрасте до 13 лет в 2 раза превышает количество детей старше 13 лет. Если справа и слева от цифры 4 написать одно и то же число, образуется количество детей в лагере. Какой это номер?

I only understood the first part...   Я понял только первую часть...

here's a hint...    вот подсказка

u = children under thirteen years            u =  дети до тринадцати лет

o = children over thirteen                        o =  дети старше тринадцати лет

u = 2o           


I hope this helps...

надеюсь, это поможет

5x - 17 = -x + 7

separate numbers and variables...or add  x  to both sides

5x + x = 7 + 17

6x = 24

divide both sides by 6

x = 24/6

x = \(\left [ 4\right ]\)

I don't exactly remember how to do these type of problems...

but I believe this is a problem involving combinations....

10 stickers to 8 friends...10*8 = 80 ....so 80 different ways??...

I hope this helps....