Question

Which ordered pair is the solution to the system of equations? @youngstudier @bixslo
x + y = -1
x - 3y = 11


A.
(2, −3)

B.
(−2, 1)

C.
(5, −2)

D.
(−6, 5)

Answer 1

@YoungStudier @Bixslo

Answer 2

@escamer

Answer 3

@celinegirl

Answer 4

@west_coast

Answer 5

@Deadly_Roses

Answer 6

she should know this ^-^

Answer 7

@jere

Answer 8

@jeremy12345

Answer 9

@pooja195

Answer 10

A.)

Answer 11

Simplest way to solve these is just plugging in the answer choices you are given. (x,y) coordinates into your given functions.

Answer 12

2x - y = -5
x + 3y = 22

A.
(1, 7)

B.
(4, 9)

C.
(7, 19)

D.
(8, 21)

Answer 13

@Maddy1251

Answer 14

Okay let me figure out this question

Answer 15

@west_coast you got this?

Answer 16

Yes ima try a few ways i can do it

Answer 17

It's A. Just to let you guys know.

Answer 18

.-. nevermind

Answer 19

-3x + 4y = -20
x + 4y = -4

A.
(8, 1)

B.
(−12, 2)

C.
(−4, −8)

D.
(4, −2)

Answer 20

@Maddy1251

Answer 21

@west_coast

Answer 22

@gabbyalicorn

Answer 23

D.

Answer 24

Tickets to the movies cost $12 for adults and $8 for children. A group of 14 people went to the movies, and the tickets cost $136. The system of equations models this situation, where x is the number of adults and y is the number of children.

x+y = 14
12x + 8y = 136

How many adults and how many children were in the group?

A.
9 adults and 5 children

B.
6 adults and 8 children

C.
4 adults and 10 children

D.
8 adults and 6 children

Answer 25

One moment.

Answer 26

B. The adults are your 'x' functions, the children are your 'y' functions, so just plug in the amount of adults & children into each equation.

Answer 27

A container holds a combination of nickels and quarters. There are 156 coins in all, and their total value is $21.60. The system of equations models this situation, where x is the number of nickels and y is the number of quarters.
x+y = 156
0.05x + 0.25y = 21.6


How many nickels and quarters are in the container?

A.
118 nickels and 38 quarters

B.
106 nickels and 50 quarters

C.
87 nickels and 69 quarters

D.
72 nickels and 84 quarters

Answer 28

@Maddy1251

Answer 29

C.

Answer 30

HOLY JOMOLY YOU'RE SMART! ALL OF THEM WERE CORRECT @Maddy1251

Answer 31

@Doll.face what can I say, I love math. :-)

Answer 32

do you like science?

Answer 33

@Maddy1251

Answer 34

Yup, I excel mostly in Physical, Chemistry, and Biology. I am halfway through my year of Physics.

Answer 35

reactant → product
If there are 4 grams of reactant, how many grams of product are produced by the chemical reaction?
A)
0 grams
B)
2 grams
C)
4 grams
D)
8 grams

Answer 36

@Maddy1251

Answer 37

C) 4 Grams.
According to the Law of Conservation of Mass, in a chemical reaction, matter is neither created nor destroyed. Because of this the sum of the mass of the reactants will always equal the mass of the products

Answer 38

A + B + C → D + E
Describe the mass of the reactants and products given the balanced chemical reaction.
A)
The mass of the products is 2/3 that of the reactants.
B)
The mass of the reactants equals the mass of the products.
C)
The mass of the reactants is less than the mass of the products.
D)
The mass of the reactants is greater than the mass of the products.

Answer 39

@Maddy1251

Answer 40

@Doll.face remember what I said yesterday.
mass of what you put in (reactants) = mass of what you get out (products)

Answer 41

c? @Maddy1251

Answer 42

No, B. :-) Remember everything should equal
reactants = products.

Answer 43

Matthew gets thirsty and decides to make some fruit punch. He dissolves a packet of the sugar mix into a pitcher of warm water. Which of these best describes what occurred?
A)
Physical change
B)
Chemical change
C)
Both a physical and chemical change
D)
Neither a physical of chemical change
@Maddy1251

Answer 44

Remember that a physical change is when no new substances are formed. Chemical changes are. Physical changes can be like, reversed or separated, while a chemical change cannot. Like a rusty nail, you cannot reverse the fact it is rusted. But mixing the packet and water together, you can separate them through evaporation.

Answer 45

Next question you ask, can you post in a new thread and mention me in it? This is making my computer lag on OS with all of these posts in one thread. :P

Answer 46

sure

Answer 47

Gracias @Doll.face