![briizy](/avatars/40356.jpg)
briizy
08.02.2021 •
Mathematics
X - 2y = 8
3x = 19 + 4y
how to answer this through elimination or substitution method?
Solved
Show answers
More tips
- F Food and Cooking Is it Really Possible to Cook Tasty Colored Cauliflower?...
- O Other What happens if you get scared half to death twice?...
- F Family and Home What s That Noise When a Kettle Boils? The Science of Water and Steam...
- L Leisure and Entertainment History of International Women s Day: When Did the Celebration of March 8th Begin?...
- W Work and Career How much does an honest traffic police officer earn in a day?...
- F Food and Cooking Red Caviar: How to Choose the Best?...
- S Style and Beauty How to Get Rid of a Bruise: Tips and Tricks...
- H Health and Medicine Is Massage Necessary? Facts and Opinions...
- L Leisure and Entertainment Should You Buy a Ceramic Knife?...
- C Computers and Internet Best Antivirus: How to Choose Protection for Your Computer?...
Answers on questions: Mathematics
- M Mathematics What s the pattern rule in these terms 0.71, 0.67, 0.63, 0.59,...
- M Mathematics A group of students studied a photograph for 30 seconds. Beginning 1 day later, a test was given each day to test their memory of the photograph. The average score for each day...
- M Mathematics Ashley grew 10 flowers with 2 seed packets. How many seed packets does Ashley need to have a total of 20 flowers in her garden? Solve using unit rates....
- M Mathematics What is the answer to this please...
- C Chemistry [need answers with steps right away! ]2.0g of ch4 (16.0) are added to 3.0g of o2 (32.0) at 400k and 950torr. what volume does this mixture occupy? a 300 ml sample of gas was collected...
- B Biology A species of alligator remains unchanged for 100 million years, then suddenly an ice age forces them to adapt to colder temperatures producing a sudden burst of evolution. What...
- M Mathematics What is the partial product for 42x25...
- H History Which of the following is NOT a reason why the Weimar Republic was unpopular?* high levels of inflation frequent killing of anyone who resisted the government It paid reparations...
- E English Byebr /> byebr /> bye...
Ответ:
The solution of the given equations
x = 3 and y =-2.5
Step-by-step explanation:
Step(i):-
x - 2y = 8 ..(i)
3x = 19 +4y ..(ii)
By using substitution method
substituting x = 2y +8 in equation (ii)
⇒ 3( 2y +8) = 19 +4y
⇒ 6y +24 = 19 +4y
⇒ 6 y - 4y = 19 - 24
⇒ 2 y = -5
Step(ii):-
Substitute 'y' = -2.5 in equation (i) , we get
x - 2y = 8
⇒ x - 2(
) =8
⇒ x = 8 -5
x = 3
Final -
The solution of the given equations
x = 3 and y =-2.5
Ответ:
9.75, 2, and 56.25
Step-by-step explanation:
Since it's 4 movie tickets, 2 popcorns (which are $6.25),
4(9.75) + 2(6.25 -> Popcorn) + 4.75
= 39 + 12.5 + 4.75
= 39 + 17.25
= $56.25
As for the total cost,
4 * 9.75 = 39
2 * 6.25 = 12.5
1 * 4.75 = 4.75
Feel free to mark this as brainliest! :D