#Hey I really need help with these 3 exercises for my tomorrow’s homework (Pre-Algebra, Algebra 1)
burnt arrowBOT
outer leaf
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The sum of three consecutive numbers is 96. What are those numbers? (didn’t solve this)
-
Shelly has a big library. She read 3/4 (three fourths) of her books. She read 5x+1, and she has 2x-15 left to read. What’s the total number of books? (Got x= 15/7 wrong 100%)
outer leaf
No I solve the first
The second
Sorry I haven’t had the first one solved when I sent the message but now I have
It’s the second
worldly dust
Okay
Okay
So the thing
You have to understand there
is that
"x" is clearly not the total number of books.
So you can create a new variable for the total number of books.
outer leaf
Wait what abt this one
- James’ age is x. His dad is 24 years older than him. The next year his dad will be four times his age. How old is James?
worldly dust
Same thing, you get to use two variables.
Let his dad's age be y.
Then you can create two equations on the two conditions given
Try and tell me
outer leaf
Can it be solved? I got that James is 8 years
worldly dust
His dad's age next year is not 4x.
Next year James himself will be one year older.
And how did you equal dad's age one year before and after
James Age = $x\$
His dad's age = $x+24\\$
After one year: $\\$
James' Age = $x+1\$
His dad's age = $4(x+1)$
outer leaf
Yes that’s how I started
mellow idolBOT
worldly dust
Well dad's age was x+24
After one year
It could have been
x+24+1
= x +25
Which is also equal to
4(x+1)
$\implies x+24+1=4(x+1)$
mellow idolBOT
worldly dust
Solve further ahead.
outer leaf
Oh so only by using the first information that james is x and his dad x+24 we can’t solve anything right?
worldly dust
No
bright violet