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
garik1379 [7]
2 years ago
12

Solve system of equations: -8x - 10y = 10 3x + 2y = 12

Mathematics
1 answer:
Svetlanka [38]2 years ago
5 0

Answer:

x=10

y = -9

Step-by-step explanation:

-8x - 10y = 10

3x + 2y = 12

Multiply the second equation by 5

5(3x + 2y) = 12*5

15x+10y = 60

Add this to the first equation to eliminate y

-8x - 10y = 10

15x+10y = 60

-----------------------

7x  + 0y  = 70

Divide by 7

7x/7 = 70/7

x = 10

Now find y

3x+2y = 12

3(10) +2y = 12

30 +2y =12

Subtract 30 from each side

2y = 12-30

2y = -18

Divide by 2

2y/2=-18/2

y = -9

You might be interested in
What is -2 3/4 divided by 5/-9 as a fraction
Vilka [71]
- 2 3/4 ÷ 5/-9 = - 11/4 x -9/5 = 99/20 = 4 19/20
4 0
3 years ago
Read 2 more answers
Please help... AP is arithmetic progression
7nadin3 [17]

Answer:

The least value of n is 17.

Step-by-step explanation:

First term (a) = 46

Second term (a + d) = 43

Third term (a + 2d) = 40

Common difference (d) = second term - first term = 43 - 46 = -3

Tn (nth term) = a + (n - 1)d

a = 46, d = -3

Tn = 46 + (n - 1)-3 = 46 + (-3n + 3) = 46 - 3n + 3 = 49 - 3n

For Tn to be negative, the product of 3 and n must be greater than 49.

Therefore, the least value of n is 17

5 0
4 years ago
Read 2 more answers
If a series of rigid transformation maps ∠F onto ∠C where ∠F is congruent to ∠C, then which of the following statements is true?
pochemuha

Answer:

BC ~ DE because of similar transformation

Step-by-step explanation:

ABC and DEF are not similar transformations the second one is wrong, the third one is wrong because. The last one ios right because by deduction it is.

6 0
3 years ago
Read 2 more answers
How do you find f(2x) when you know f(x) = x^3?
babymother [125]
To find the answer, you just plug 2x in place of x (even though 2x already has an x). It would look something like this: f(2x)= (2x)^3 = 2x*2x*2x= 8x^3
6 0
3 years ago
>
oksian1 [2.3K]

Complete Question:

Let x and y be positive integers and x be greater than y.

11x/11y = ?

Answer:

11x/11y = x/y

Step-by-step explanation:

Given

x > y

Required

11x/11y

From the question, we understand that x is greater than y (i.e. x > y)

Also, we'll assume that y ≠ 0, in other not to result in an undefined result.

So,

11x/11y

Divide the numerator and denominator by 11

(11x ÷ 11)/(11y ÷ 11)

The result of the division is:

(x)/(y)

x/y

Hence,

11x/11y = x/y for x > y and y ≠ 0

3 0
3 years ago
Other questions:
  • The grocery store sells dates for $4.75 a pound and pomegranates for $3.50 a pound. which kind of function best model the weight
    5·1 answer
  • Solve the following system using the crossing-graphs method. (Round your answers to two decimal places.) −6.4x − 25.5y = 171
    13·1 answer
  • Death Valley, California, is 282 feet below sea level. Represent this altitude as an integer. I got -282. Am i correct?
    14·2 answers
  • The data points in Set 1 are more the mean than the points in Set 2 because the mean absolute deviation is
    14·1 answer
  • Please answer these I need help! 1-5 questions.
    7·2 answers
  • Which relationship is always correct for the angles m, n, and p of triangle ABC? n+p=m m+p=n m+p+n=180 degrees m+p+n= 90 degrees
    14·2 answers
  • Pls, help me!
    6·1 answer
  • Find the solution to the system of linear equations 2×-4y=-10 -2x-y=0
    15·1 answer
  • 45. Which sequence is represented by
    14·1 answer
  • The decimal not equivalent to two and three tenths is​
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!