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borishaifa [10]
3 years ago
11

HELP!!! how do you solve for x and y in the following equations using substitution??

Mathematics
2 answers:
DerKrebs [107]3 years ago
7 0
If y+2x=10, then y=10-2x
then you use this equation in the: 2y-x=10
that means… 2(10-2x)-x=10
20-4x-x=10
-5x=10-20
so x= 2
after that you put x value in the second equation:
y+4=10
y= 10-4=6
Hope that is OK for you.
Tanzania [10]3 years ago
6 0
Y=-2x+10 and y=1/2x+5
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Fynjy0 [20]

Answer:

the figure on the top left

Step-by-step explanation:

Hey There!

If figure a was going to be dilated by a scale factor of 3 you would have to multiply all of its dimensions by 3

the top length would be 6

the bottom length would be 9

the right side length would be 12

and the left side length would be 9

The first figure has all of these dimensions thus it is correct answer

6 0
3 years ago
Help pls asap!!!!!!!!!!!!!!!!!!!!
yawa3891 [41]
Hello!

We can put the x values in and see if we get y

Option 1:
Set A: y = 4x - 2

Do the first values

y = 4(-1) - 2

y = -4 - 2

y = -6

Look at the next one to be sure

y = 4(1) - 2

y = 4 - 2

y = 2

So the set A equation is correct we can look at set be now

y = x + 4

y = -5 + 4

y = -1

Try the next one to be sure

y = -2 + 4

y = 2

So the set B equation is also correct

The answer is the first one

Hope this helps!
7 0
3 years ago
Identify the independent and dependent variables. The equation A=25w gives the area A (in square feet) of a rectangular dance fl
kozerog [31]

Answer:

The dependent variable is A

The independent variable is w

Step-by-step explanation:

Given

A = 25w

Required

Identify the variables

In A = 25w

The value of w is independent of the value of A.

In other words:

A derive its own value from w; by multiplying 25 and w.

Take for instance:

w = 3

The value of A would be:

A = 25 * 3

A = 75

Hence:

The dependent variable is A

The independent variable is w

7 0
3 years ago
The drawing of a building has a scale of 1 inch to 30 feet. what is the actual heght, in feet of the building
Blizzard [7]
How many inches is the drawing? 
6 0
4 years ago
304/320 simplified, please help, the faster the better.
Reika [66]
\frac{304}{320} \\ \\ GCF = 16 \\ \\ 304 \div 16 = 19 \\ \\ 320 \div 16 = 20 \\ \\  \frac{19}{20} \\ \\

The final result is: 19/20 or 0.95.
3 0
3 years ago
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