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lyudmila [28]
4 years ago
14

7y-23 plus 23x-16 plus 8x -21 find x and Y show steps please

Mathematics
1 answer:
Solnce55 [7]4 years ago
6 0
7y - 23 + 23x -16 + 8x - 21  
31x + 7y - 60  
What is the original problem equal to? You can't go any further unless you know.
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If y=8 when x =3, find y when x=45
Art [367]
Let's make things easier by simplifying things.

y = 8 and x = 3 is more likely to be understood as a ratio. So for the rest of the answer, their relationship would be represented as y:x

Thus: y:x = 8:3

The problem would be finding y when x = 45

Let us proceed on using the previous equation and substitute x with 45 which would look like this:

y:45 = 8:3

Ratios can also be expressed as fractions which would make things more understandable and easy to solve. So the new form of our equation would be like this:

y/45 = 8/3

Then we proceed with a cross multiplication where the equation becomes like as what is shown below:

3y = 45 * 8

From there, you can solve it by multiplying 45 and 8 then dividing the product with 3 to get y

3y = 360

y = 120

Another way of looking at the problem, especially problems like these, is to take the whole question or statement as an equation. it would probably look like this:

y = 8 when x = 3 : y = ? when x = 45

This would make you understand what approach you can use to solve the given problem.
5 0
3 years ago
Read 2 more answers
Look at the graph below. what is the slope of the line? a) -1/2 b) 1/2 c) -2 d) 2
il63 [147K]
I believe it is b)
Because you always do rise over the run and if it goes right then it is positive and if it goes left it is negative.
4 0
3 years ago
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If you can’t read it : Find the unit rate. 5.60 for 5 tickets. I’m not sure if i have to divide or whatever
Vladimir [108]

Answer:

1.12

Step-by-step explanation:

Yes, you are supposed to divide the dollar amount by the tickets to get the answer.

5 0
3 years ago
Find 83 1/3 % of 384
cestrela7 [59]

Answer:

319.872

Step-by-step explanation:

319.872 / 384 = 83 1/3 / 100

5 0
3 years ago
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Can someone help me?<br> FIND THE VALUE OF X
Oksana_A [137]

Answer: x = 29

Step-by-step explanation:

both angles are the same

so:

2x = 3x-29

2x - 3x = -29

-x = -29

x = 29

5 0
3 years ago
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