Urgent!!! Wait for the formula table! What is the formula? Urgent!!!

u/r=i

m is milli, i.e. 1 1000

So 1000m = 1

So 1000ml = 1*l = l

1 2O2, 1 2 and 2 offset, = O

m p, m is the mass and p is the density, so = v

The same goes for f q=e

kx+b obviously = y

1/2o2=o

The pq is unknown, but it should definitely be U

So it's i love you,

I forgot about questions 1 and 2 for a long time, so I went to the math book to find them, and I won't say much about them.

3. Let Stupid Spring A be x and B be Y

x+y=500

70%x+90%y=368

I don't know if you have learned the system of equations, just solve it.

I don't understand.

4. Set the original price to be XY

1-20%）x=120

1+50%)y=120

The back is very simple, and you can find the answer to Yuanyan from the book (I am in the second year of junior high school, and I have almost forgotten all the knowledge in elementary school, so you can ask me for help if you have any questions).

Later, when you see a triangle with an angle of 30 degrees, you will immediately think of the proportional relationship between the three sides 1: 3:2, if it is a fill-in-the-blank question, you can use it directly, this problem can be used with the sine theorem a sina=b sinb=c sinc

Substituting the known condition of Runian is: 6 sin60 = c sin90 solution to obtain c = 4 3

tan(t+π/2)=cot(π/2-t-π/2)=cot(-t)=-cot(t)=-1/(tant)

There's a formula

Don't look at some people who don't know how to pretend to understand and take a tan(a+b) formula out, it's useless.

Yes, it's the formula of tan( +. Just look it up and find out.

CV 1000=N NM=CVM 1000=M The unit of Zhuyan Sun wanton V is ML

PVX = M (liquid) M (liquid) W = PVXW = M (quality) M = M (quality) CVM 1000 = PVXW = > VX = CVM 1000PW

I don't know what the letter of the third formula represents, so I don't know what it means, so I posted it to explain.

u r=im is milli, i.e. 1 1000

So 1000m = 1

So 1000ml = 1*l = l

1 2O2, 1 2 and 2 offset, = O

m p, m is the stupid mass, p is the density, so =v

The same goes for f q=e

kx+b obviously = y

1/2o2=o

pq unknown, blind orange but it should definitely be u

So it's ilove

You, Zituan.