Question

This will be the open thread for the SAT math for tonight! Super excited to work together with other people. I am going to post 10 different practice problems and one super hard problem that are all SAT math questions. Well go over answers to and tricks to solve them. Starts in 5 minutes...

Answer 1

10 minutes actually

Answer 2

lol

Answer 3

XD

Answer 4

5 Minutes

Answer 5

*jeopardy theme song plays*

Answer 6

hah

Answer 7

Ok guys hopefully we can recruit more people in the future... I am going to hold these sessions at 10 every night pacifica time, but tonight is the first... I will hold them up until the March SAT and I am going to alternate subjects as well!

Answer 8

So, I am going to post the first problem, just give me a second... We ill start basic and move up gradually.

Answer 9

ok kewl

Answer 10

If the average of x, 5x and 6x is 8, what is the value of x?

Answer 11

Try solving it without any answer choices first...

Answer 12

x=2?

Answer 13

a. 1
b. 2
c. 3
d. 4
e. 5

Answer 14

ok, let the other people answer if they want to for a minute and then well go over the correct answer

Answer 15

ok sorry :(

Answer 16

its cool

Answer 17

well if anyone else isnt going to answer, the correct answer is 2

Answer 18

Haichi, u can share how u got the answer if u want to

Answer 19

I will

Answer 20

cool!

Answer 21

so to get the answer it would be x+5x+6x=12x But there are three numbers: x, 5x and 6x so it would be \[12x \over 3\] and that would equal 4x

Answer 22

The average is 8 so \[8\over 4x \]=2

Answer 23

yup perfect! If anyone has any questions about how he came to the answer he did, we can all go over it together..

Answer 24

Ok, I guess we r on to the next question...

Answer 25

If 3x^2=4y=12, what is the value of x^2y?
a. 48
b. 36
c. 24
d. 12
e. 6

Answer 26

Should I say the answer?

Answer 27

With the explaination?

Answer 28

yes

Answer 29

4y=12 so
y= 3;

now find value of x so
3x^2=12 then
x^2=4 so
x=2
if x=2 and y=3
2^(2)(3) or 2^6
This equals 64 so x^2y=64

Answer 30

I work it out on word so I dont cheat and look it up

Answer 31

ok cool

Answer 32

there is no worries about cheating hear man because were just practicing

Answer 33

ik

Answer 34

feel free to look up formulas and stuff too

Answer 35

Just to clear things up

Answer 36

ok one sec, give me a minute to type up the next question

Answer 37

If (2x-5)(2x+5)=5, what is the value of 4x^2?

Answer 38

-30
-20
10
20
30

Answer 39

one of those are the answer...

Answer 40

ok sorry guys

Answer 41

bad connection

Answer 42

np

Answer 43

this is going to be it for tonight because my connections sucks

Answer 44

Aww man :(
I enjoyed this enrichment

Answer 45

(2x - 5)(2x + 5) = 5

4x^2 - 25 = 5

4x^2 = 30

x^2 = 15/2

x = +- (square root of 7.5)

4x = 4(square root of 7.5) or -4(square root of 7.5)

Answer 46

ok tomorrow at 10 again

Answer 47

Awsome!

Answer 48

alright see yall

Answer 49

buh bai nite sweet dreams don't let the little voids bite xD-from King.Void

Answer 50

Happy studying