Mathematics College

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System of equations
Solve by substitution:

y = x + 7

2x + y = -5

Group of answer choices

(4 , -3)

(4 , 3)

(-4 , 3)

(-4, -3)

Answers

Answer 1

Answer:

C: (-4,3)

Step-by-step explanation:

2x+x+7=-5

3x+7=-5

3x=-12

x=-4

y=-4+7

y=3

(-4,3)

Related Questions


Which ordered pair is a solution of the equation?
7x– 5 = 4y – 6

Answers

Answer:

7x-4y=-11

Step-by-step explanation:

Answer:

Neither in K.A

Step-by-step explanation:

Make sure put some choices before you ask we wouldn't know .

Thank me later !

PLEASE ANSWER ASAP FOR BRAINLEST WITH WORK!!!!!!!!!!!!!!!

Answers

Answer:

The answer is 43 because 600/14 = 42.8571429 rounded to the nearest whole number is 43.

Step-by-step explanation:

find x for me i need help.

Answers

Answer:

X is 70 degrees

Step-by-step explanation:

In a triangle, all the angles add up to 180.

We can set up an equation:

48+62+x=180

x=180-(48+62)

x=70

Marissa counted 29 coins in her change purse which contained d dimes and q quarters. The value of the coins is $5.00. How many dimes and how many quarters are in her change purse?

Answers

Answer:

15 dimes 14 quarters

Step-by-step explanation:

d+q=29

10d+25q=500

10d+10q=290

15q=210

q=14

d=15

Answer:

29 bucks a piece equlas is de 5 dollar tip is de dog and is the rare dollarido ok yes is good dooddood okokokokokkokokokokok so ther is you answar

Step-by-step explanation:

Pls help extra points and mark Brainlist easy reading

Answers

Answer: the action of a device  

Step-by-step explanation: i hope this helps!!!

Answer: Information about a process

Hope this helps!!

Please me mark brainliest

Please help I’ll mark you as brainliest if correct !

Answers

Answer:

69.08 m

Step-by-step explanation:

C = 2(pi) x r

Radius (r) = 11

Pi = 3.14

C = 2(3.14) x 11 = 69.08

Two machines package items for shipping. One makes packages of 17 items. The other makes packages of 13 items. Suppose both machines start a new package at the same time. It takes one second
for each machine to pack one item. How many items does each machine
pack before they again start now packages at the same time?

Answers

Answer:18

Step-by-step explanation: cuz 1 = 7 so it is 18

Does changing the compound inequality x>-3 and x<3 from and to or change the solution set? Explain

Answers

Answer:

So the answer is

Step-by-step explanation:

x)2943

Answer:The x values of the “and” inequality satisfy both inequalities.

The x values of the “or” inequality satisfy one or both inequalities.

Changing the compound inequality from “and” to “or” changes the solution set from the values between –3 and 3 for all real numbers.

Step-by-step explanation:

that's all u need

The table shows the number of books, by type, checked out from the school library on Monday.
Book Checkout
Book Type Number of Books
mystery
24
nonfiction
18
adventure
12
humor
16
Part A: Which statement is true?
O For every 3 mystery books checked out, 4 nonfiction books were checked out.
O For every 3 mystery books checked out, 6 nonfiction books were checked out.
O For every 4 mystery books checked out, 3 nonfiction books were checked out.
O For every 6 mystery books checked out, 3 nonfiction books were checked out.

Answers

The answer is... For every 4 mystery books checked out, 3 nonfiction books are checked out.

The statement i.e. true is For every 4 mystery books checked out, 3 nonfiction books are checked out.

Calculation of the ratio:

Here first determine the ratio of nonfiction books to mystery books

So, it should be like

= 18:24

= 6:8

= 3:4

So based on the above calculations we can say that The statement i.e. true is For every 4 mystery books checked out, 3 nonfiction books are checked out.

Learn more about ratio here: https://brainly.com/question/5102566

A bakery sells pastries in boxes of 7 each. If the bakery has 27 pastries, how many boxes can be filled?​

Answers

Answer:

3 with a few left over so 4

Step-by-step explanation:

help

Find the product of the following :

a. (-23) x 93



b. (- 16 ) x (- 30)



c. 14 x (- 12)

Answers

Answer:

a)-2139

b)480

c)-168

Step-by-step explanation:

a)-×+=-

b)-×-=+

c)+×-=-

Answer:

(a) -2139 (b) 480 (c) -168

Step-by-step explanation:

(a)

-23 x 93 = -2,139 ( negative and a positive make a negative )

(b)

-16 x - 30 = 480 ( two negatives cancel out and make a positive!! )

(c)

14 x -12 = -168 ( negative and a positive make a negative

hope that helps!!

Sara and Sam are each working on a science project in which they need to research the individual masses of the nine planets (including the dwarf planet Pluto as the ninth planet). Sara completes her data for the planets' masses in kilograms while Sam's data is in milligrams.


Look at picture.


Approximate how many times greater Saturn's mass is than Mercury's.

A) 200,000
B) 2,000,000
C) 2,000
D) 20,000

Answers

Answer:

2000 times

Step-by-step explanation:

Given

Sara:

[tex]Mercury = 3.302 * 10^{23[/tex]

[tex]Saturn = 5.685 * 10^{26[/tex]

Sam:

[tex]Mercury = 3.302 * 10^{29[/tex]

[tex]Saturn = 5.685 * 10^{32[/tex]

To determine the number of times, the mass of Saturn is greater than the mass of Mercury, we simply do the following:

[tex]Times = \frac{Saturn}{Mercury}[/tex]

Using Sara's measurement; this gives:

[tex]Times = \frac{5.685 * 10^{26}}{3.302 * 10^{23}}[/tex]

Apply law of indices

[tex]Times = \frac{5.685 * 10^{26-23}}{3.302}[/tex]

[tex]Times = \frac{5.685 * 10^3}{3.302}[/tex]

[tex]Times = 5.685/3.302 * 10^3[/tex]

[tex]Times = 1.72 * 10^3[/tex]

Approximate

[tex]Times = 2 * 10^3[/tex]

[tex]Times = 2000[/tex]

there are 8 playing cards in a bag. 2 of those cards are spades. what is the probability of picking a spade randomly from a bag?
answer as a simplified fraction in form a/b

Answers

1/4 ,before simplified it would be 2/8.. if you divide that in half the most simplified form of that fraction would be 1/4

what would the model look like?

What is 15% of 60? Create a model to prove your answer.

Answers

What do you mean by model?

60 times .15 is 9.

A model could be like 50 circles with 9 circles filled in, or a circle with 15% shaded in.

PLEASE HELP!!!!!! ILL GIVE BRAINLIEST *EXTRA 40 POINTS** !! DONT SKIP :((

Answers

Answer:

The slope intercept form is y=1/6x+1

Step-by-step explanation:

Answer:

first point goes on (0,1)

second point goes on (6, 1)

hope that helps :)

Step-by-step explanation:

(x is first, y is second)

Identify what property is 17 + 54 + 6?

Identity property

distributive property

commutative property

associative property

Answers

i believe it is the commutative property, hope this helps!

Find the length of side x in simplest radical form with a rational denominator,
5
X

Answers

Answer:

x is 90

Step-by-step explanation:

Please help asap
The sales tax rate is 10%. If Carla buys a handbag priced at $90, how much tax will she
pay?

Answers

Answer: $9

Step-by-step explanation:

10 percent of 9 or 90 broken into 10 parts is 9 also 90 divided by 10 is 9

Here is an easy one

Answers

Remember that the angles of a triangle is 180 so:

(7x+8) + (5x+2) + (7x-1) = 180
7x+8+5x+2+7x-1=180
7x+5x+7x=180-8-2+1
19x=171
X= 171/19
X=9

Therefore x=9

Answer:

9

Step-by-step explanation:

done in other question of yours

The students at Job's high school

were surveyed to determine their

favorite foods. The results are shown

in the table below. Suppose students

were randomly selected and asked

what their favorite food is. Find the

probability of each event. Write as a

fraction in simplest form.


Favorite Food Responses

Pizza 19

Steak 8

Chow-mein 5

Seafood 4

Spaghetti 3

Cereal 1


16. P(steak)

17. P(Spaghetti)

18. P(cereal or seafood)

19. P(not chow-mein)

19. P(pizza)

20. P(cereal or steak)

21. P(not steak) 22. P(not cereal or seafood)

23. P(chicken) 24. P(chow mein or spaghetti)

Answers

Maybe pay attention to school and u would know

The problem
1/3+1 5/6=

Answers

Mixed number form:2 1/6 Decimal form:2.16 exact form: 13/6
The answer is 2.6 or 2 1/6 or 13/6

17 + x = 3 + 17

please help me what's the answer to this

Answers

Answer:

3

Step-by-step explanation:

............

Answer:

x=3

Step-by-step explanation:

17+x=3+17

-17          -17

x=3

Hopes this helps :)

Cathy’s customer base is 2/3 residential and 1/3 business. If she has 350 residential customers, how many total customers does she have?

Answers

Answer: She has 525 total customers.

Step-by-step explanation:

To find how many customers she has in total you would have to divide 350 by 2, then multiply the answer by 3, and you would get 525. Also to check your answer you could do 525 divided by three which equals 175, and then do 175 times two, which equals 350, so you know the answer is right. :)

10 is what % of 50?
5 is what % of 50?
1 is what % of 50?
17 is what % of 50?

Answers

Answer:

10/50 X 100 = 20%

5/50 X 100 = 10%

1/50 X 100= 2%

17/50 X 100= 34%

Answer:

To calculate 10 percent of a number, simply divide it by 10 or move the decimal point one place to the left. To calculate 5 percent of a number, simply divide 10 percent of the number by 2. To find 1% of something (1/100 of something), divide by 100. For 17 is what % of 50 is hard. So maybe this is right? We need to multiply the decimal by the number we are finding the percentage of.

Step-by-step explanation:

10% is what % of 50?

Answer: 5%

5 is what % of 50?

Answer: 10

1 is what % of 50?

Answer: 2

17 is what % of 50?

Answer: 34

Hope this helps!

I will give brainiest to whoever answers correctly !!

Answers

Answer:

26275

Step-by-step explanation:

if simple interest its just .017*25000 which is 1 year then multiply by 3 and add to 25000

The work of Islamic mathematicians, philosophers, and scientists played an essential
role in the start of

Answers

Answer:

The beginning of the philosophy of history

Step-by-step explanation:

what is the inverse of the relation​

Answers

Y is not = to 1/4x-3

Math review
Help me
Please

Answers

I can’t tell you that it is a closed circle since of the _ underneath the Sybmbol

What is the simplest form of 4/3

Answers

Answer:

43 is already in the simplest form. It can be written as 1.333333 in decimal form (rounded to 6 decimal places).

You can’t simplify anymore

Dawn has two bank accounts she has been using to save money for a car. The difference between account A and account B is $100. If she uses StartFraction 3 Over 8 EndFraction of account A and StartFraction 7 Over 8 EndFraction of account B, Dawn will have a down payment of $2000. Choose the statements that are true when solving for the amount Dawn has in each account. Check all that apply.
One of the equations that represents this scenario is A – B = 100.
One of the equations that represents this scenario is StartFraction 3 Over 8 EndFractionA + StartFraction 7 Over 8 EndFractionB = 2000.
To eliminate the A variable, multiply the first equation by 3 and the second by 8.
To eliminate the B variable, multiply the first equation by 7 and the second by 8.
To eliminate the B variable, multiply the first equation by 7 and the second by –8.

Answers

Answer:

1) One of the equations that represents this scenario is A – B = 100.

2)One of the equations that represents this scenario is StartFraction 3 Over 8 EndFractionA + StartFraction 7 Over 8 EndFractionB = 2000.

4) To eliminate the B variable, multiply the first equation by 7 and the second by 8.

Step-by-step explanation:

Answer:

a b and d

Step-by-step explanation:

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