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masha68 [24]
3 years ago
10

2x + 2y = 0 and y = 2x – 3 I I need help asap

Mathematics
1 answer:
Mazyrski [523]3 years ago
6 0

Answer:

x=1 and y=−1

Step-by-step explanation:

Use substitution in order to solve this.

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Answer:

1. 516 ppm; 2. 561 ppm

Step-by-step explanation:

1. CO₂ increase at old rate

Time = 2100 - 2010 = 90 years

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CO₂ in 2010 = 390 + 126 = 516 ppm

At the old rate, the CO₂ concentration in 2100 will be 516 ppm.

2. CO₂ increase at new rate

Time = 2100 - 2010 = 90 years

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CO₂ in 2010 = 390 + 171 = 561 ppm

At the new rate, the CO₂ concentration in 2100 will be 561 ppm.

6 0
3 years ago
a club put its members into 5 groups for an activity. After 7 student have to leave early, there are only 3 students left to fin
Zanzabum

Answer:

2 students in each group

Step-by-step explanation:

If there were 5 groups and after a while 7 students leave early and 3 students remain to do the activity, if you add 7 + 3 = 10 divide it by 5, the number of groups in the activity, you would get 2 students in each group.

6 0
3 years ago
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Using the 5 step method
Talja [164]

Answer: the first integer is -6 and the second integer is -4

Step-by-step explanation:

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3 years ago
A large community college has professors and lecturers the total number of faculty members is 136.The school reported that they
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Answer:

  48

Step-by-step explanation:

The ratio of professors to lecturers is ...

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Then the ratio of professors to total faculty is ...

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The Community College employs 48 professors.

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3 years ago
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