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Veseljchak [2.6K]
3 years ago
6

Please help with math 50 POINTS

Mathematics
2 answers:
hoa [83]3 years ago
4 0

Answer:

Step-by-step explanation:

is there anyway you can take a closer picture it is not letting me see well

gladu [14]3 years ago
3 0

Answer:

slope intercept form will always be xy=mx+b

Step-by-step explanation:

1) y= x+5 I believe this is the correct answer for number one:/ sorry if I'm no help

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What is the solution to this system of equations?
Ede4ka [16]

Answer:

First choice.

Step-by-step explanation:

You could plug in the choices to see which would make all the 3 equations true.

Let's start with (x=2,y=-6,z=1):

2x+y-z=-3

2(2)+-6-1=-3

4-6-1=-3

-2-1=-3

-3=-3 is true so the first choice satisfies the first equation.

5x-2y+2z=24

5(2)-2(-6)+2(1)=24

10+12+2=24

24=24 is true so the first choice satisfies the second equation.

3x-z=5

3(2)-1=5

6-1=5

5=5 is true so the first choice satisfies the third equation.

We don't have to go any further since we found the solution.

---------Another way.

Multiply the first equation by 2 and add equation 1 and equation 2  together.

2(2x+y-z=-3)

4x+2y-2z=-6 is the first equation multiplied by 2.

5x-2y+2z=24

----------------------Add the equations together:

9x+0+0=18

9x=18

Divide both sides by 9:

x=18/9

x=2

Using the third equation along with x=2 we can find z.

3x-z=5 with x=2:

3(2)-z=5

6-z=5

Add z on both sides:

6=5+z

Subtract 5 on both sides:

1=z

Now using the first equation along with 2x+y-z=-3 with x=2 and z=1:

2(2)+y-1=-3

4+y-1=-3

3+y=-3

Subtract 3 on both sides:

y=-6

So the solution is (x=2,y=-6,z=1).

8 0
3 years ago
What is 4+3-1x22 plz help
cricket20 [7]
4+3-1x22 
4+3-22
7-22 
-15 
So -15 is the answer
5 0
3 years ago
Read 2 more answers
Solve 2x2 - 126 = 0. Make sure to simplify if<br> necessary.
grandymaker [24]

-122

sorry if i am wrong but have a good day<3

8 0
3 years ago
In a small town, electricity prices have been rising 2% each year since 2008. Which
mihalych1998 [28]
<h3>Answer: p = 0.12*(1.02)^t</h3>

Explanation:

The general exponential growth equation is

p = A*B^t

where t is the number of years that have gone by after 2008, A is the starting amount, B is the growth multiplier, and p is the price t years after 2008

We know that A = 0.12 is the starting price

The value of B is B = 1.02 which is in the form 1+r since 1.02 = 1 + 0.02 = 1+r

The r value is r = 0.02 and it is positive to represent growth. Keep in mind that 2% = 2/100 = 0.02

So we go from

p = A*B^t

to

p = 0.12*(1.02)^t

4 0
3 years ago
Which property is illustrated by the following statement <br><br> 2x(6)=(6)2x
aleksandrvk [35]
Communicative prop of multiplication because the numbers are moving
7 0
3 years ago
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