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wel
3 years ago
6

-4x+y=6 -5x-y=21 solve by substiution

Mathematics
2 answers:
gulaghasi [49]3 years ago
8 0

Answer:

55

Step-by-step explanation:

55 is your answer

babunello [35]3 years ago
6 0

Answer:

Step-by-step explanation:

Subtract

2

y

from both sides of the equation.

x

=

12

−

2

y

−

x

=

−

y

−

6

Replace all occurrences of

x

with

12

−

2

y

in each equation.

Tap for more steps...

−

12

+

2

y

=

−

y

−

6

x

=

12

−

2

y

Solve for

y

in the first equation.

Tap for more steps...

y

=

2

x

=

12

−

2

y

Replace all occurrences of

y

with

2

in each equation.

Tap for more steps...

x

=

8

y

=

2

The solution to the system is the complete set of ordered pairs that are valid solutions.

(

8

,

2

)

The result can be shown in multiple forms.

Point Form:

(

8

,

2

)

Equation Form:

x

=

8

,

y

=

2

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A store buys 5 sweaters for $50 and sells them for $130. How much profit does the store make per sweater?
Svet_ta [14]

Answer: $16

Step-by-step explanation:

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Tatol Profit = $80

Profit Per Seearter = $80 ÷ 5 =26

4 0
3 years ago
What is the value of y in the solution to the system of equations?<br> *x+3y=1<br> 2x – 3y = -30
Delvig [45]

Answer:

\large\boxed{y=\dfrac{32}{9}}

Step-by-step explanation:

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8 0
3 years ago
Can someone help me
rodikova [14]

Try this explanation:

Note, in the 1st row given '9x', in the 2d one - '9(0)', then it means the substitution '0' instead of 'x'. In other words <u>x=0</u> !

answer: x-intercept is '0', y-intercept is '12'

3 0
3 years ago
Of the cones recently sold by an ice cream shop, 3 had cookie dough ice cream and 15 had other flavors. What is the experimental
GaryK [48]

Answer:1/6

Step-by-step explanation:

15+3 =18

\frac{3}{18} = 1/6

6 0
3 years ago
Chris rode his bike 4 miles west and then 3 miles south. What is the
melamori03 [73]

Answer:

5 miles

Step-by-step explanation:

This is because if you draw a line going west and label it as 4 miles, then draw another line going south and label it 3 miles, you form a right angle, right? So, the fastest way to go back would be taking a diagonal-like route back to the beginning. Does this shape look familiar to you? Right! It's a right triangle. And do the numbers 3, 4, and 5 sound familiar to you? Yup, it's a Pythagorean triplet. If the legs of a right triangle are 3 and 4, the hypotenuse is 5. Why am I saying this? Because, in the drawing you just did, the 4 miles west and 3 miles south were the legs, and the diagonal path back to the beginning is the hypotenuse. Get it now?

Happy to help! :)

7 0
3 years ago
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