PLEASE HELP!
A geometry class has a total of
39 students. The number of males is 13
more than the number of females. How many males and how many females are in the class?

- anonymous

- chestercat

See more answers at brainly.com

Get this expert

answer on brainly

SEE EXPERT ANSWER

Get your **free** account and access **expert** answers to this

and **thousands** of other questions

- anonymous

first, we need to define any variables

- anonymous

In a time crunch!!

- anonymous

please help

Looking for something else?

Not the answer you are looking for? Search for more explanations.

## More answers

- anonymous

let x represent the number of males
let y represent the number of females

- anonymous

what is the condition they have set for us?
'there are 13 more males than there are females' right?

- anonymous

yep

- anonymous

hence x=13+y right? can you see this?

- anonymous

yes

- anonymous

so in total
x+ y = 39
and we know x interns of y right? x=13+y so sub this into the equation
(13+y)+y=39
13+2y=39 can you solve this now?

- anonymous

y=13 x=26

- anonymous

thank you so much!!

- anonymous

i have another one

- anonymous

no problem, fan and medal if you please

- anonymous

The sum of two numbers is
49
and the difference is
9
. What are the numbers?

- anonymous

we have two sets of equations. what does sum mean? and what does difference mean?

- anonymous

sum implies + addition
difference implies - subtraction, right?

- anonymous

yes

- anonymous

so if we have a number called x and a different number called y
then x+y=49
and x-y=9

- anonymous

yep

- anonymous

can you solve these simultaneously now?

- anonymous

uh

- anonymous

x=9+y right, just re-arrange the second equation. then sub this equation into the first equation.
(9+y)+y=49
2y=40
y=20

- anonymous

hence, x=29

- anonymous

At a hockey game, a vender sold a combined total of
183
sodas and hot dogs. The number of sodas sold was two times the number of hot dogs sold. Find the number of sodas and the number of hot dogs sold.

- anonymous

x+y=183 let x be soda y=hotdogs
x=2y
so 2y+y=183
3y=183
y=61, x=122

- anonymous

the pattern is all similar, try this on your own now

- anonymous

so number of hotdogs would be 61

- anonymous

yep

Looking for something else?

Not the answer you are looking for? Search for more explanations.