All categories

2 years ago

Solve by Elimination

Mathematics

2 answers:

dezoksy [38]2 years ago

5 0

Answer: (3,4)

multiply both sides of the top equation by 2

get rid of the x variable by subtracting add all corresponding numbers and variables (4+(-4), -4+7, -4+16) which leaves you with 3y=12

divide both sides by 3 which cancels out the 3y and leaves you with y=4

input y in your top equation to find x. (-2x+2x4=2)

this leaves you with x=3

I HOPE THAT MADE SENSE!!!

Leona [35]2 years ago

3 0

1) (3,4), 2) (1,9), 3) (4,4)

You might be interested in

Karl uses 8 whole square tiles and 8 half square tiles to make a mosaic. What is the area of his mosaic?

trapecia [35]

Answer:

Step-by-step explanation:

8 squares=32

8 half squares=16

32+16=48

There are 4 sides to a 8 whole squares 8*4=32

There a 2 sides to 8 half squares 8*2=16

8 0

2 years ago

Robert went to the grocery store and purchased cans of soup and frozen dinners. each can of soup has 300 mg of sodium and each f

Paraphin [41]

There are 9 cans of soup and 5 cans of frozen dinner.

The variables used for soup and frozen dinner are x and y respectively.

Step-by-step explanation:

Let,

Soup = x

Frozen Dinner = y

According to given statement of sodium;

300x + 500y = 5200 eqn 1

And,

x + y = 14 eqn 2

$Multiplying\ equation\ 2\ with\ 300\\300(x+y=14)\\300x+300y=4200\ Eqn 3\\$

Subtracting Eqn 3 from Eqn 1;

$(300x+500y)-(300x+300y)=5200-4200\\300x+500y-300x-300y=1000\\200y=1000\\y=\frac{1000}{200} \\y=5$

Putting value of y in Eqn 1;

$300x+500(5)=5200\\300x+2500=5200\\\\Subtracting\ 2500\ from\ both\ sides\ \\300x+2500-2500=5200-2500\\300x=2700\\x=\frac{2700}{300} \\x=9$

There are 9 cans of soup and 5 cans of frozen dinner.

The variables used for soup and frozen dinner are x and y respectively.

Keywords: Variables, linear equations, subtraction.

Learn more about linear equations at;

#LearnwithBrainly

5 0

2 years ago

The opposite of the opposite of 17, or -(-17), is equivalent to which of the following?

kenny6666 [7]

Answer:

Step-by-step explanation:

-(-17)=-1*-1*17=1*17=17

6 0

2 years ago

Area <br>What is the area for this shape??<br>

yuradex [85]

20 times 10 is 200 divided by 2 is 100. so 100 cm squared

8 0

2 years ago

Read 2 more answers

How many 5-digit numbers can be formed out of the digits 0, 1, 2, 3, 3, 4,

ioda

1.) 14320

2.) 32041

3.) 02413

4.) 30214

5.) 40321

6.) 21340

7.) 40132

8.) 12430

9.) 31240

10.) 21430

11.) 40312

12.) 04312

13.) 02130

14.) 34321

15.) 41203

16.) 30124

17.) 24310

18.) 33412

19.) 02143

20.) 43102

I hope you can find more

4 0

2 years ago