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Serggg [28]
3 years ago
7

MARK AS BRAINLIESTT

Mathematics
2 answers:
Lelu [443]3 years ago
4 0

Answer

 B) x + 20 ≥ 50

Step-by-step explanation:

Mars2501 [29]3 years ago
4 0

Answer:

B) x + 20 ≥ 50

Step-by-step explanation:

Given,

The hours she already has for social studies = 20,

After getting x more hours,

The total hours she has now = x + 20,

According to the question,

Total hours ≥ 50

\implies x + 20\geq 50

Which is the required inequality to model give situation,

Hence, OPTION B is correct.

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frez [133]
Solution is in the picture

3 0
2 years ago
The number of ways 8 cars can be lined up at a toll booth would be computed from
stepladder [879]

Answer: c. 8!

Step-by-step explanation:

We know , that if we line up n things , then the total number of ways to arrange n things in a line is given by :-

n! ( in words :- n factorial)

Therefore , the number of ways 8 cars can be lined up at a toll booth would be 8! .

Hence, the correct answer is c. 8! .

Alternatively , we also use multiplicative principle,

If we line up 8 cars , first we fix one car , then the number of choices for the next place will be 7 , after that we fix second car ,then the number of choices for the next place will be 6 , and so on..

So , the total number of ways to line up 8 cars = 8 x 7 x 6 x 5 x 4 x 3 x 2 x1 = 8!

Hence, the correct answer is c. 8! .

5 0
3 years ago
Usando a notação de conjuntos escreva os intervalos .<br> [6,10]
frez [133]
Hola mi amigoMira esto es muy servicial!!!
https://youtu.be/UJQkqV2zGv0
5 0
3 years ago
I need to know how its b quickly
goblinko [34]
It's B it even stars the correct answer for you
4 0
3 years ago
Students in biology are studying the macromolecules of life. They used a calorimeter to determine the calories in various types
Dimas [21]

Answer:D

Step-by-step explanation:

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