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
Natasha2012 [34]
3 years ago
6

-6x + 7y = 9 2x - 2y = 4 Solve for x and y

Mathematics
1 answer:
Effectus [21]3 years ago
7 0

Answer:

x = 23 , y = 21

Step-by-step explanation:

-6x + 7y = 9 -- (1)

2x - 2y = 4 -- (2)

(2) x 3 : 6x - 6y = 12 -- (2)'

(1) + (2)' : y = 21 -- (3)

Subtituting (3) into (2),

2x - 42 = 4

2x = 46

x = 23 -- (4)

According (3) and (4),

x = 23 , y = 21

If this helps you, please give brainliest!

You might be interested in
Tap me please thanksvjbjgsxjhex
insens350 [35]
The picture wasn’t showing up in my screen for some reason
Smh
8 0
3 years ago
Two sides of a triangle have the following measures. Find the range of possible measures for the third side.
strojnjashka [21]

Answer:

1 and 15

Step-by-step explanation:

8-7=1

8+7=15

3 0
3 years ago
A professor of cognitive psychology is interested in the percent accuracy on this memory encoding task among college students. S
allochka39001 [22]

Answer:

Mean of M = 0.794

Standard Error = 0.013875

Step-by-step explanation:

Given that :

Sample size, n = 64

Mean percentage accuracy, μ = 0.794

Standard deviation, σ = 0.1110

Since the distribution of scores is normal ;

Sample mean, m ~ μ

Hence, m ~ 0.794

The sample sta dard deviation of standard error ~ σ/sqrt(n)

Standard Error = 0.1110 / sqrt(64)

Standard Error = 0.1110 / 8

Standard Error = 0.013875

4 0
3 years ago
What is the major difference between Fourier Transform and Z-Transform??.
never [62]
<span>The Z transform is related to Laplace transform and is applied to analyze digital circuits. The Fourier transform, on the other hand, is a type z-transform, i.e z-transform which is used in spectrum analysis and calculation of the energy density of the signal. The difference lies on the field of application.</span>
7 0
4 years ago
Solve mathematics problem in photo please! :) First.
jonny [76]
Hello,

Answer B

if 3k+3<0 ==>|3k+3|=-3k-3

==>-3k-3>12
==>-3k>15
==>k<-5

if 3k+3>0 then |3k+3|=3k+3
3k+3>12
==>3k>9
==>k>3

3 0
3 years ago
Other questions:
  • Fabricio recibe el encargo de preparar 1000 moldes en forma de pirámide hexagonal regular de 10 cm de lado x 30 cm de altura. Ad
    11·1 answer
  • Please show work to! Thanks!​
    7·1 answer
  • Chris wants to order DVDs over the internet.
    7·2 answers
  • When simplified, the expression x 1/8 times x 3/8 is 12. Which is a possible value of x?
    5·1 answer
  • 2(0)(4)(1/2) ÷ 4 + 2(1/2)​
    7·1 answer
  • Find the total of 38 and 42
    11·2 answers
  • Each week, Joey gets paid $10 plus $2 for each chore he does. His sister Julie gets paid $5 plus $3 per chore.
    11·2 answers
  • Consider the two functions below which one of these functions in the line year what is its equation answer any answer totwo deci
    10·1 answer
  • Concert tickets cost $15 for general admission, but only $9 with a student ID. Ticket sales total $450. Write and graph an equat
    14·1 answer
  • Do either 23, 24, or 26 please you can do one of those please
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!