How to judge whether the word is pronounced as a vowel or a consonant Judge how to use "a" and "an"

How to judge whether the word is pronounced as a vowel or a consonant Judge how to use "a" and "an"

The words beginning with a e i o u usually use an, and some special words are memorized

Least common multiple of 12, 16 and 20
80 is not a multiple of 12

12=2*3*4
16=2*2*2*2
20=2*2*5
Least common multiple = 240

Solution ratio (1-25% x) = 36

(1-25%x)=36
75%x=36
x=48

It is known that a and B are two rational numbers. Compare a minus B with a

If B is negative, then A-B is greater than a, and vice versa

There are 2400 chickens and ducks, of which the number of chickens is one fourth of that of ducks. How many chickens and ducks are there

Lie equation
If there are x ducks, there are 1 / 4x chickens
X+1/4X=2400
X=1920
2400-1920 = 480 (pieces)
A: there are 480 chickens and 1920 ducks

Given that the maximum value of the function y = a + bsinx is 3 / 2, and the minimum value is - 1 / 2, we can find the value of a and B

The maximum is a + | B | = 3 / 2
The minimum value is a - | B | = - 1 / 2
Therefore, a = 1 / 2, | B | = 1
That is, a = 1 / 2, B = 1 or - 1

1. If x < y, the condition that ax is greater than ay should be_______ .
2. From the inequality ax > b, we can deduce B of x < A, then the value range of a is ()
A.a ≤0 B.a＜0 C.a≥0 D.a ＞0
3. Given 2r-3y = 6, if y is a positive number, then the value range of R is_______ .

1.a3

Sequence 1.1.2.3.5.8.13.21.34 The general term formula of

an=1/√5*{[(1+√5)/2]^(n+1)-[(1-√5)/2]^(n+1)} n=0,1,2,.
golden section

If m plus 2 plus half m minus 3 of MX equals 0

Is it "(m ^ 2 + 1 / 2m-3) x = 0“

The ticket price for group purchase of park tickets is as follows:
It costs 13 yuan for 50 people, 11 yuan for 51 ~ 100 people and 9 yuan for more than 100 people
There are two tour groups, group A and group B. It is known that the number of group A is less than 50, and group B is no more than 100. If they buy tickets separately, they should pay 1392 yuan in total. If they buy tickets together as a group, they should pay 1080 yuan in total
(1) Please judge whether the number of group B is less than 50
(2) How many tour groups do you have?
36 in group A and 94 in group B?

1. The maximum number of group A is 49, and the ticket price is 49 * 13 = 637 (1392-637) / 13 = 58.077
So there are more than 50 people in group B
2. The total number of the two regiments is 1080 / 9 = 120 (1080 can't be divided by 11)
If there is a member in group A, the number of group B is 200-a
13A+11（120-A）=1392
A=36
Group B has 120-36 = 84 people