3 yuan 5 jiao-8 Jiao = how many Jiao

3 yuan 5 jiao-8 Jiao = how many Jiao

twenty-seven

Factorization 25X ^ 4 + 10x ^ 2 + 1

Perfect square
The original formula = (5x & # 178; + 1) &# 178;

How easy is it to multiply one in nine by 101 minus one in nine divided by one in two
19 divided by 1 / 5 plus 3 / 4 and multiplied by 5 / 6
11 out of 42 plus 4 out of 5 times 5 out of 12 plus 4 out of 7
17 out of 8 times 4 out of 9 divided by 1 minus 1 out of 6

1、1/9×101-1/9÷1/2=1/9×101-1/9×2=1/9×(101-2)=1/9×99=112,19÷(1/5+3/4)×5/6=19÷19/20×5/6=19×20/19×5/6=50/33,11/42+4/5×5/12+4/7=11/42+1/3+4/7=7/64,17/8×4/9÷(1-1/6)=17/8×4/9×6/5=17/15

A 6.4-meter-long cuboid wood is sawed into three sections on average, and its surface area is just increased by 60 square decimeters. How many cubic meters is the volume of this wood?

The surface area is increased by 4 bottom areas
Bottom area: 60 / 4 = 15 square decimeters
Volume: 0.15 * 6.4 = 0.96m3

When a number is divided by 3, 4 and 5, there is 2 left. The minimum number is ()

[3, 4, 5]＝60
60＋2＝62.

How to calculate 10Y + 2 (7y-2) = 5 (4Y + 3) + 3Y

10y+2(7y-2)=5(4y+3)+3y
10y+14y-4=20y+15+3y
10y+14y-20y-3y=15+4
y=19

Simple calculation of 66 times 107 minus 65 times 27

66×107-65×27
=65×107+107-65×27
=65×（107-27）+107
=65×80+107
=520+107
=627

Given a + B = 1ab = 3 / 16, find the value of a ^ 3B + 2A ^ 2B ^ 2 + AB ^ 3

Original formula = AB (a + b) ^ 2 = 3 / 16

Fill the nine numbers - 8, - 6, - 4, - 2, 0, 2, 4, 6 and 8 into the nine squares in the graph, so that the sum of three numbers in each row, three numbers in each column and three numbers in diagonal angle is 0

As shown in the figure:

Addition, subtraction and elimination of linear equations of two variables!
8=2c+9k
6=2c-3k
Add, subtract and eliminate the specific steps! Is the following 9K - (- 3K)?

8=2c+9k
6=2c-3k
Subtraction:
2=12k k=1/6
8=2c+9k
18=6c-9k
Add:
26=8c
c=13/4