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Arturiano [62]
3 years ago
8

Use algebraic rules of equations to predict the solution to the system of equations. Include all of your work for full credit.

Mathematics
2 answers:
dolphi86 [110]3 years ago
4 0
X+2y=10
x=10-2y

6y=-3(10-2y)+30
6y=-30+6y+30
0=0
kompoz [17]3 years ago
3 0

Answer:

infinite solutions

Step-by-step explanation:

x+2y=10

6y=-3x+30

To solve for x  and y we use substitution method

LEts solve the first equation for x

x+2y=10

Subtract 2y on both sides

x=10-2y

Now plug in x in second equation

6y=-3x+30

6y=-3(10-2y)+30

6y=-30+6y+30

6y=6y

Both sides are same , so both x  and y have infinite solutions.

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On a blueprint the length of a wall is 5 centimeters. If the actual length of the wall is 15 feet, what is scale of the blueprin
Ludmilka [50]

Answer:

The wall is 90 meters wide.

Step-by-step explanation:

1. set up and solve a proportion to find the value of w like this:

1cm=6cm

15m=wm

2. cancel out the like units on both sides of the equation

1=6

15=w

3. Equate the cross products, and then solve for w:

1*w=15*6

w=90                                                                                                                                          The actual width of the wall is 90 meters.

5 0
3 years ago
Emily put toys into a square box that is 46 centimeters long. How many square centimeters is the bottom of the box?
Sedaia [141]
If the box is a square and the length of one side is 46cm, then the area of the box in square centimeters is 46 * 46 = 2116.
Final Answer:
d. 2116
Hope I helped :)
7 0
3 years ago
Please help ill give brainliest!!! Others get 5 stars and a thank you
grandymaker [24]

Answer:

I think the answer is 32<em>cm²</em>

Step-by-step explanation:

A lot of mathematics using a calculator and checking all possible answers led me to this possible solution.

5 0
3 years ago
PLEASE HELP !!!!!!!!!!! WILL MARK BRIANLIEST !!!!!!!!!!!!!
sleet_krkn [62]

Answer:

1:4

Step-by-step explanation:

6 0
3 years ago
6x-3-11-8x=2 please show work
Ludmilka [50]

Answer: is x = -8

this is how i got it ______

6 x - 3 - 11 - 8 x = 2

(simplify both sides and combine like terms)

(6x + -8x ) + ( -3 + -11) = 2

- 2x  +  -14 = 2

-2x  -  14 = 2

( then you add 14 to both sides)

- 2x - 14 = 2

     +14       +14

-2x = 16

( then you divide both sides by -2)

-2x / -2   =   16/ -2

x = -8

ta da!! happy to help!

it made it here. this is for the second one.

( first, we subtract 8n from both sides)

13n + 26 = 8n - 29

-8n           -8n

5n + 26  =  -29

( then we subtract 26 from both sides)

5n + 26 = -29

     - 26    -26

5n = - 55

(after that we divide both sides by 5, we do this to make n alone )

5n/ 5 = -55/ 5

n = -11

7 0
3 years ago
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