1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Ugo [173]
2 years ago
9

Help! i just need the answers. maybe some explanations would be good too :)

Mathematics
1 answer:
Dennis_Churaev [7]2 years ago
5 0

For Number one: -xy + 2x = 20, x = 5

To solve this, all we need to do is plugin 5 for every place we have x. So...

- (5)y + 2(5) = 20

-5y + 10 = 20

-5y = 10

y = -2

For number two: 4x - 3y - 10 = 1, x = -1

To solve this, we need to plugin -1 for all of the x variables. So...

4 (-1) - 3y - 10 = 1

-4 - 3y - 10 = 1

-14 - 3y = 1

-3y = 15

y = -5

For number three: 5x + 7y = -1, x = 4

We need to plugin -4 for all of the x variables. So...

5 (4) + 7y = -1

20 + 7y = -1

7y = -21

y = -3

For number four: x = 6 + xy, x = -3

Same as the other ones, just plugin -3 for all of the x variables. So...

-3 = 6 + (-3)y

-3 = 6 - 3y

-9 = -3y

3 = y

I hope this helps :)

You might be interested in
Please help !!
Rama09 [41]
Just add the two given angles together.
6 0
2 years ago
Read 2 more answers
Please help???????????
vagabundo [1.1K]

Answer:

x - \sqrt{7}

Step-by-step explanation:

A polynomial has the form

first term is the term of highest degree followed by term of second etc.

note that x = x^{1} ← degree 1

x - \sqrt{7}

fits this description and is a polynomial of degree 1



5 0
3 years ago
A spinner has sections labeled W W , X X , Y Y , and Z Z . The faces of a number cube are labeled 1, 2, 3, 4, 5, and 6. What is
Kisachek [45]
Total number of sections on the spinner = 4
So there can be 4 outcomes on 1 spin of the arrow on the arrow.

Number of faces of the cube = 6
So there can be 6 outcomes on rolling of the dice.

For each outcome of the spinner, there can be 6 outcomes of rolling a dice. So for 4 outcomes of the spinner, there will be 6 x 4 = 24 outcomes in total.

For example, WW and either of {1,2,3,4,5,6} can occur. This makes folloiwng 6 outcomes: WW1, WW2, WW3, WW4, WW5 and WW6

Same goes for XX (6 outcomes), YY (6 outcomes) and ZZ (6 outcomes)

Thus in total there will be 24 outcomes. 
So option j gives the correct answer
7 0
3 years ago
HELO URGENT WILL GIVE BRAINLIEST IF CORRECT
yanalaym [24]
Answer:
Circle

Explanation:
6 0
2 years ago
Read 2 more answers
Which ordered pair would form a proportional relationship with the point graphed below?
ziro4ka [17]
The correct answer is D (80,-30)
4 0
2 years ago
Other questions:
  • If a baby weighed 3 and 3/8 how many more pounds would it have to gain to reach 5 1/2 pounds
    13·1 answer
  • Name the set or sets of numbers to which the square root of 28 belongs to.
    11·1 answer
  • Please help!!!!!!!!!!!!!!!!!!
    6·1 answer
  • V=u+at<br> u= 2<br> a= -5<br> t=1/2 <br> what is the value of v
    11·2 answers
  • 83 rounded to the nearest 10th place​
    8·2 answers
  • Answer in simplest form 1 7/9-9/10
    6·1 answer
  • A cylinder has a volume of approximately 565 cubic inches. Which of the following best describes the dimensions of the cylinder
    10·2 answers
  • For triangles Y Z X and C D B, sides Y Z, Z X, C D, and B D are 2.5 centimeters. Sides B C and Y X are 3.8 centimeters. Angles B
    14·2 answers
  • Take pi to be 3.142 and write down all tge digitd given by your calculator. 21​
    6·1 answer
  • What are the dimensions of the simple shapes you obtained in part C? List dimensions for all your decompositions (sets of shapes
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!