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Fudgin [204]
3 years ago
8

Please help me to answer this question​

Mathematics
1 answer:
Hatshy [7]3 years ago
5 0
Where’s the question
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Elimination method<br> 4x-2y=48<br> 2x+6y=-18
yulyashka [42]
4x-2y=48\\ \\ 2x+6y=-18

First we'll multiply the second equation by -2


-2\cdot (2x+6y)=-2\cdot -18\\ \\ -4x-12y=36

Now let's add the new equation and the first one.

(4x-2y)+(-4x-12y)=48+36\\ \\ 4x-4x-2y-12y=48+36\\ \\ -14y=84\\ \\ y=\frac { 84 }{ -14 } \\ \\ y=-6

We found y's value. We'll plug it in one of the equations to find x's value.

y=-6\\ \\ 4x-2y=48\\ \\ 4x-2\cdot -6=48\\ \\ 4x+12=48\\ \\ 4x=48-12\\ \\ 4x=36\\ \\ x=\frac { 36 }{ 4 } \\ \\ x=9

Solution ;

(9, -6)


4 0
3 years ago
Read 2 more answers
I need help on this can some one explain it and answer please!!!!
Alex_Xolod [135]

Answer:

4(a). C= 3 + 1.5x

b. 'x' stands for the number of times the cup is refilled.

c. 3 + 1.5 (5)= $10.50

d. My answer to part (c) makes sense because the price of the cup is $3, and I have to pay $1.50 for each additional refill, in accordance to the formula I wrote.

Step-by-step explanation:

The original price of the cup is 3 dollars, but with each refill you get, you have to pay $1.50.

6 0
2 years ago
15 x sin(30)=?/15 x 15
Delicious77 [7]

Answer:

The exact value of

sin

(

30

)

sin(30) is

1

2

12.

15

⋅

1

2

15⋅12

Combine

15

15 and

1

2

12.

15

2

152

The result can be shown in multiple forms.

Exact Form:

15

2

152

Decimal Form:

7.5

7.5

Mixed Number Form:

7

1

2

712

Step-by-step explanation:

8 0
3 years ago
An antique collectible has a value of $235 right now. It will increase in value by 9% each year. Find the value the collectible
kirill [66]

Answer:

Step-by-step explanation: An antique collectible has a value of $235 right now. It will increase in value by 9% each year. Find the value the collectible after 16 years, A.$2115 B. $1017 C.$856 D.933

8 0
3 years ago
Read 2 more answers
What number would represent the outlier in the following set of data?
Rom4ik [11]

Answer:

What number would represent the outlier in the following set of data?

10, 13, 9, 29, 15, 11, 14, 8, 10, 11, 17, 14, 12

17

13

29

8

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
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