Answer:
-4
Step-by-step explanation:
Hello,
2x-5y=1 |3|4
3x-4y=-2|-2|-5
------------------------
-7y=7 ==>y=-1
-7x=14==>x=-2
sol={(-2,-1)}
Well in this problem we just have to work backwards doing everything opposite of what she did in order to get the final answer.
so she has 39 stamps at this moment. and since she bought nine more stamps lets subtract that value to see what she had before that.
1.) 39 - 9 = 30
now she has 30. but she said that before step one she sold half of them to buy that video game. so she divided her starting number by two. so again we are going to work backwards by multiplying the number by 2:)
2.) 30 x 2 = 60!!
3.) So she started out with 60 stamps
answer is 60:)
hope i helped
Answer:
-2x - 5 (lesser than or equal to) 15
Answer:
Theorems
Step-by-step explanation:
Theorems is the right answer.
A circle is a geometric figure where all points on the circle keep equal distances from a point called the centre.
A circle has so many important properties.
The important of these are called theorems related to circles.
Some of the theorems are
i)Central angle theorem
ii) Opposite angles are supplementary for a cyclic quadrilateral, etc
Hence theorems would be the appropriate word for filling up the answer
