5x - y = -7
X + y = -5

Answers

Answer 1

Answer:

x = -2

y = -3

Step-by-step explanation:

5x - y = -7

x + y = -5

6x = -12

x = -2

x + y = -5

-2 + y = -5

y = -5 + 2

y = -3

Answer 2

Answer:

(-2,-3)

Step-by-step explanation:

x + y = -5

y = -x - 5

5x - (-x - 5) = -7

5x + x + 5 = -7

6x = -12

x = -2

x + y = -5

-2 + y = -5

y = -3


Related Questions

What is the difference between the number of solutions for a two-step equation and for a two-step inequality

Answers

Answer:

A two-step equation is something like:

A*X + B = C

In this case, like in a linear equation, we have only one solution that can be found as:

A*X = C - B

X = (C - B)/A

In the case of a two-step inequality, we have something like:

A*X + B > C

Solving this we get;

A*X >  C - B

X > (C - B)/A

In this case, any value of X that is larger than  (C - B)/A is a solution, so in this case, we have infinite solutions.

That is the difference between the number of solutions for each case, in a two-step equation we have only one, while in the case of the inequality we have infinite.

I need 5

This is the picture..

Answers

Answer:

What are the options?

CPCT?

A store at the mall is having a sale of 30% off all coats, "c". The expression 0.7c describes the discounted price in dollars for a coat. Which expression also describes the discounted price in dollars, for a coat?
A. 0.7c
B. c - 0.7c
C. c - 0.3c
D. c - 0.3

Answers

Answer:

c

Step-by-step explanation:

Which of the following are parallel to
y = 3x – 2
(Choose all that apply)


y = 5 – 3x

Y= 3x

y = 3x – 1

y = 3x – 4

y = -3x

Answers

y = 3x
y = 3x - 1
y = 3x - 4

i’m pretty sure in order for lines to be parallel, they have to have the same slope but different y- intercepts

Answer:

y=3x-1,y=3x-4

Step-by-step explanation:

y=mx+c

where is gradient, parallel lines have same gradient

y=5-3x

=-3x+5

m=-3

y=-3x

m=-3

y=3x-1

m=3 ,the gradient is equal to the original equation

y=3x-4

m=3,the gradient also equal to the given equation

The number of guests, g, coming for dinner
is not 8

Answers

Answer:

g < 8

rip 5 days ago


A jar contains 4 blue marbles, 6 red marbles, 10 purple
marbles, and 5 green marbles. If you choose one marble,
what is the probability that it WON'T be green?
A
20/25
B
10/25
С
5/25
D
15/25

Answers

Answer:

A

Step-by-step explanation

I got the right answer

A bookcase contains these books. 36 cookbooks 17 autobiographies
39 novels 22 reference books One book is selected at random from the bookcase. Based on the information, which statement is true?
A The book is twice as likely to be a cookbook as a reference book.
B The book is just as likely to be a novel as it is to be an autobiography or a reference book.
C. The book is more likely to be a cookbook than a novel.
D. The item is half as likely to be a reference book as a novel.

Answers

Answer:

A

Step-by-step explanation:

5k(k-9)=0 solve for k

Answers

Step-by-step explanation:

5k²-45= 0

5k²= 0 +45

k²= 45/5

k²= 9

or

k = 9/2 = 4.5

The weight of 4 eggs is shown. Identify the constant of proportionality of total weight to number of
eggs.
The weight of 4 eggs is 188 g

Answers

Answer:

47g

Step-by-step explanation:

Gabe needs to cut an 8-foot piece of plywood into 16 equivalent pieces for a fence.

Answers

Answer:

0.5 ft or 6 in

Step-by-step explanation:

Simply do 8/16, each piece is half a foot (6 inches) long

Answer:

6 inches.

Step-by-step explanation:

First, we know that 8 feet is equal to 96 inches.

96/16 = 6.

So 6 inches per fence post.

Hope this helps!

Last night, Jasmine and her family went out for dinner. The questions below came up on their way to the restaurant or during the meal. Decide whether or not each question is a statistical question. Select all that apply.
●How far are we from the restaurant?
●How long will it be until we get there? ●Would you rather have burgers or pizza?
●How much should we leave for the tip? ●What was the most frequently ordered dish in the restaurant this evening?
●Did you like the pizza tonight?
●Which table's bill was the highest?
●How many people were sitting at each table this evening?​

Answers

A statistical question is a question where the data collected can vary.

Ex. Statistical - "How old are the students in my class?" The data can vary based on which student you ask.

The following questions are statistical:

●Would you rather have burgers or pizza?

●How much should we leave for the tip?

●Did you like the pizza tonight?

●How many people were sitting at each table this evening?

These questions can vary based on who you ask or where you look

I hope this was helpful! =)

Pls give answers to these I will mark branliest

Answers

Answer:

I can answer the first 5 for you :)

1: 1,019,536

2: 892,850

3:20,215,692

4:274,728

5:227,376

Have a great day!!!!

Dillon deposited 3/4 of his paycheck
into the bank. The deposit slip shows how much he deposited.($46.50)
Write and solve an equation to find the amount of his
paycheck.
Equation:
Solution:

Answers

Answer:

His paycheck was $62.

Step-by-step explanation:

3/4 x = 46.5

x = 46.5 * 4/3

x = 62

Equation: 3/4 x = 46.5

Solution: x = 62

R and S represent positive integers on a number line
and R< S. Which of the following could be the
positions of R and S?

Answers

Answer:

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

S is greater than R and they say they are both postive so it has to be on the right side of zero on the number line

A regular polygon has

Answers

Answer:

angles that are all equal and sides that all have the same length

Step-by-step explanation:

Answer:

A polygon is any shape with at least three straight sides,

and angles. It can only have straight sides and has to be closed.

Step-by-step explanation:

A polygon is any shape with at least three straight sides,

and angles. It can only have straight sides and has to be closed.

3. Adam bought 3 pens and 4 pencils for $4.25. Lily bought 2 pens and 6 pencils for $4.50. How much is a pen? a pencil?​

Answers

Make two equations
Let x = pen
Let y = pencil
3x + 4y = 4.25
2x + 6y = 4.50
Make both coefficients equal
(3x + 4y = 4.25) * 2
(2x + 6y = 4.50) * 3
6x + 8y = 8.5
6x + 18y = 13.5
Subtract both sides
-10y = -5, y = 0.50
3x + 4(0.50) = 4.25
3x + 2 = 4.25
3x = 2.25, x = 0.75

Pen = $0.75
Pencil = $0.50

Please help fast!

Solve 2/3x-1/5>1

X>?

Answers

Answer:

x > 9/5

Step-by-step explanation:

2/3 x - 1/5 > 1

15 × 2/3x - 15 × 1/5 > 15 × 1

10x - 3 > 15

10x > 18

x > 18/10

x > 9/5

If the number of bacteria in a colony doubles every 27 hours and there is currently a population of 2,000 bacteria, what will the population be 54 hours from now?

Answers

6,000
starts at 2,000
27 hours: 4,000
54 hours: 6,000

In science class, Farah uses a graduated cylinder with
water in it to measure the volume of some marbles. She
drops in marbles so that they're all under water and
measures the height of the water.
After dropping in 4 marbles, the height is 10 ml
After dropping in 6 marbles, the height is 11 ml.
Here are your answers from the previous screen:
Before dropping in any marbles, the height is 8 ml.
Each marble increases the height by 3 mL.
What should be the height of the water after 13 marbles
are dropped in?

Answers

Answer:

47 mL

Step-by-step explanation:

Note each marble increases the height by 3 mL, and we start with 8 mL, so we multiply 3 by 13, and add it to 8

The volume of each marble is 0.5 ml. The volume after dropping 13 marbles is 14.5 ml.

Volume

The volume of an object is the amount of space occupied by a three dimensional object.

A graduated cylinder can be used to measure the volume of a cylinder. Given that After dropping in 4 marbles, the height is 10 ml and After dropping in 6 marbles, the height is 11 ml.

Hence:

Volume per marble = (11 ml - 10 ml) / (6 - 4) = 0.5 ml

The volume of each marble is 0.5 ml.

If the initial volume is 8 ml, after 13 marbles, height = (8 ml + 0.5 * 13) = 14.5 ml.

Find out more on Volume at: https://brainly.com/question/1972490

Help! I’ll give brainliest

Answers

A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA

Crazy I just saw your classmate with the same test I think lol A!!!!!!!!

helpppp needed


tysm for everyone helping btw :)

i put points at 35 xx

Answers

Answer:

10ft.

Step-by-step explanation:

1yd = 3ft.

3yd = 9ft. + 1ft= 10ft.

Answer:

I think the answer is 3.04800

or just 10ft.

If 25 percent of your classmates have cats, and your class has 20 students, how many students have cats? (I have to show my work)

Answers

Answer:

5 students.

Step-by-step explanation:

25% is a quarter of the amount, or 1/4. A quarter of 20 is 5, since 4 times 5 is 20. So 5 students have cats.

Can sides of a triangle have lengths 1, 13, and 14 ???

Answers

Answer: Yes it can!

Step-by-step explanation:

This is called a scalene triangle, where all 3 sides are different lengths.

Can anyone help me with #3 and #4 and #6 please I will give brainlist!!

Answers

Answer:

3. 15.02

4. 84.05

6. 4,301

Step-by-step explanation:

I'm not too sure how to explain this, but those are the answers.

There are 645 students at Tech Middle School, and
20% of the students are th graders, How rising
Students are 7th graders? ?

Answers

Answer:

.20

Step-by-step explanation:

The word percent literally means "Out of 100". With that being said, 20% can be written as a fraction, mixed number or whole number as follows: 1/5 (fraction), 20/100 (mixed number) or .20 (whole number).

hello please help i’ll give brainliest

Answers

It’s B) Ayurveda. Ayurveda offers a complete system to live a long healthy life and it’s also called the science of longevity.

Someone please help me, use a variable to represent the situation, and solve the equation using inverse operations.

The length of an average toucan is about two thirds the length of an average macaw. Toucans are
about 24 in. long.

Answers

Answer:

36 in

Step-by-step explanation:

T= toucan

M= macaw

T= 2/3M

T= 24

24= 2/3M

72=2M

36= M

Length of macaw be x

24=2/3(x)2x=72x=72/2x=36in

Please answer correctly !!!! Will mark Brianliest !!!!!!!!!!!!!!

Answers

9:21 is the original ratio but the simplest is 3:7

A teacher is interested in students' opinions about an upcoming school dance. Which of the following techniques
uses systematic random sampling?
Survey the first 10 students who arrive.
Survey every 10th classroom as the teacher walks down the hallway.
Survey the 10th student arriving at school (with the number 10 being randomly chosen), then survey every 12th
student after that
O Survey the 10th student arriving at school (with the number 10 being randomly chosen), then survey every other
boy and every other girl after that.

Answers

Answer:

think its c but not sure

Step-by-step explanation:

 because it repeats its self to get i sample

Answer and Step-by-step explanation: yes it's C i got it right so did the person above me

Ellie bought 10 packages of cat food and 8 packages of dog food. Each package of cat food contained 9 cans, and each package of dog food contained 5 cans. How many more cans of cat food than dog food did Ellie buy?

Answers

well

10x9=90
8x5=40

90-40=50
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