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Amanda [17]
3 years ago
5

How many solutions does the equation −2a + 2a + 7 = 8 have? One Two None Infinitely many

Mathematics
2 answers:
aleksandrvk [35]3 years ago
5 0

Answer:

no solutions

Step-by-step explanation:

−2a + 2a + 7 = 8

Combine like terms

7 = 8

This is never true so there are no solutions

lakkis [162]3 years ago
3 0
Infinitely many, as -2a + 2a cancel each other out, so it doesn’t matter what a is currently equal to.
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5p/7 - 18 = -43<br> A: -50<br> B: -85 &amp; 2/5<br> C: -31<br> D: -35
Oliga [24]

I'm sorry I really don't know I'm not really good with math that's why I got them brainly for other people's help because I really not that cool math and I'm homeschooled

4 0
3 years ago
Answer this please and the first person to do it will get Branilest !! Don’t forget to explain
Mandarinka [93]

Answer:

3g + 9g =  - 48 \\ 12g =  - 48 \\ g =  -  \frac{48}{12}  \\ g =  - 4 \\  \\   - 4m - 6m - 30 =  - 80 \\  - 4m - 6m =  - 80 + 30 \\  - 10m =  - 110 \\ m =  \frac{ - 110}{ - 10}  \\ m = 11 \\  \\ 12 =  - 8n - 24 - 4n \\ 12 + 24 =  - 8n - 4n \\ 36 =  - 12n \\ n =  \frac{36}{ - 12}  \\ n =  - 3 \\  \\ 5y + 2y +  \frac{1}{2}  =  -  \frac{1}{2 }  \\ 5y + 2y =   - \frac{1}{2}   -  \frac{1}{2}  \\ 7y =  - 1 \\ y =  -  \frac{1}{7}  \\  \\ 22x + 0.25 - 16x = 0.85 \\ 22x - 16x = 0.85 - 0.25 \\ 6x = 0.6 \\  x =  \frac{0.6}{6}  \\ x = 0.1 \\  \\ 17k + 6k + 11 = 80 \\ 17k + 6k = 80 - 11 \\ 23k = 69 \\ k = 3

7 0
3 years ago
A, b and c are aged 5,6,9 years old respectively. They have £60 to share and decide to share the money according to the ratio of
Tomtit [17]

Answer:

Step-by-step explanation:

5k+ 6k+9k=20k

20k=£60

k=3£

£15, £18, £27

3 0
3 years ago
quezlet: A survey of​ third- to​ twelfth-grade students with a sample size of 2026 found that they devoted an average of 1 hour
Maurinko [17]

Answer:

Population is all students from grades 3-12.

Sample is the students who participated in the survey.

Step-by-step explanation:

Given : A survey of​ third- to​ twelfth-grade students with a sample size of 2026 found that they devoted an average of 1 hour and 46 minutes per day to using entertainment media.

To find : Identify the population and the sample.

Solution :

The population is defined as it contain all individuals which we want to collect the information.

So, the population consists of all third- to twelfth grade students.

Therefore, Population is all students from grades 3-12.

The sample is defined as a part of population of which information was actually collected.

So, the sample is only the respondents in the survey conducted in 2026.

Therefore, Sample is the students who participated in the survey.

6 0
3 years ago
Hi again,
vivado [14]

Answer:

Step-by-step explanation:

821

200

5 0
3 years ago
Read 2 more answers
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