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artcher [175]
3 years ago
8

This makes no sense to me lol​

Mathematics
2 answers:
wariber [46]3 years ago
4 0

Answer:

me either lol sorry :)

Step-by-step explanation:

Dafna11 [192]3 years ago
4 0

Answer:

A and B

Step-by-step explanation:

Basically all you have to do is combine those equations. How do you do that? You add/subtract the equations from each other, OR use substitution. It's hard to explain I recommend searching it up.

However, in this equation this is not what they are asking for. Only ONE equation has a solution when combined/substituted. Some have false solutions such as 3=0, which is not true. Some have infinite solutions where every number works.

Solving A:

This works because it actually gives us the value of y and x instead of giving us an incorrect statement.

Solving B:

This works as well!

Solving C:

This has no solution. It doesn't work and it ends up with 0 = -6, which is not true.

Solving D:

This has more than 1 solution.

Solving E:

This does not work, it has no solutions. It ends up with 0 = -2.

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a geography test has 6 questions worth 3 marks each and 16 questions worth 2 marks each. write an algebraic expression for each
Verdich [7]
(6 x 3) + (16 x 2)
You can use PEMDAS to break it down if you would like
1 question is worth 3 marks each and 1 question is worth 2 marks each
4 0
3 years ago
Susan is trying to decide between two jobs. One job pays $12 per hour for the first 36 hours and $15 per hour for any additional
nasty-shy [4]

Answer:

For the first question (For which job will she earn more if she works 40 hours a week), the answer is the second job.

For the second question (How much more per year will this be if she works 50 weeks per year), the answer is 25$ extra a year.

First i multiplied $12 times 36.

$12 x 36 = $432

Then i multiplied $15 times 4.

$15 x 4 = $60

Now add those together

$432 + $60 = $492

That's how much she would make in a week for the first job, if she worked 40 hours a week.

For the second job, i did the exact same process.

$11.50 x 35 = $402.5

$18 x 5 = $90

$402.5 + $90 = $492.5

She would get 50 more cents a week, if she worked 40 hours a week.

For the second question, i multiplied the first job total by 50, since she is working 50 weeks a year.

$492 x 50 = $24,600

Thats her total of a year, for the first job.

Do this with the second job.

$492.5 x 50 = $24,625

As you can see, she would get $25 more in the second job, than the first job.

I hope this helped!

7 0
3 years ago
I NEEEEED HELLLLP with this question anybody know?
seropon [69]

Answer:

its 706.5

Step-by-step explanation:

do pi r^2

pi is 3.14

radius is 15

15 times 15 times 3.15 is 706.5

hope this helps

5 0
3 years ago
Read 2 more answers
Which expresión is equvalient yo 810-210+20+20
andrezito [222]

Answer:

640

Step-by-step explanation:

3 0
3 years ago
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can someone help me with the 6 questions I'm sorry I know it's hard to see and I will tell you the questions
Sveta_85 [38]
1. 9
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3. ??
4. 12:15
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3 years ago
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