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olya-2409 [2.1K]
2 years ago
10

Can someone please help i have until 12am which is 45 minutes away for me!!

Mathematics
1 answer:
Vika [28.1K]2 years ago
7 0
5x+12-2x= 15 Answer: (1,10)
x= 1

y=12-2(1)

y= 10
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X²+x-6=0<br><br>hãy tìm giá trị của x trong câu trên
Gennadij [26K]

Tìm giá trị của x :

  • {x}^{2}  + x  -  6 = 0

  • x {}^{2}  + 3x - 2x  - 6 = 0

  • x(x + 3) - 2(x + 3) = 0

  • (x + 3)(x - 2) = 0

Bây giờ, có hai trường hợp :

Trường hợp 1. khi nào x + 3 = 0

  • x = -3

Trường hợp 2. khi nào x - 2 = 0

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Tôi hy vọng nó đã giúp !

6 0
2 years ago
A major advantage of longitudinal design over the cross-sectional design is the ability to detect change as a result of repeated
Alex73 [517]

Answer:

Conclusion: The statement is true.

Step-by-step explanation:

A longitudinal design consists of the observation of one or several variables in a group of individuals during a time window, in order to record the possible changes that are generated in said characteristic in that lapse.

On the other hand, the transverse design is concerned with measuring one or several variables at a single point of time and, therefore, does not allow changes to be detected over time.

Conclusion: The statement is true.

5 0
2 years ago
What is the opposite of the opposite of -3/8
Komok [63]
The opposite of -3/8 is 3/8 and the opposite of that is -3/8.

The answer is -3/8
4 0
3 years ago
The value of a dirt bike decreases by 25% each year. If you purchased this dirt bike today for $500, to the nearest dollar how m
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First. Find out what 25% of 500 is,then minus that from 500 five times.

It wont be worth anything because it will be $-125 in 5 years.

500-125-125-125-125-125= -125
5 0
3 years ago
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