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
Mama L [17]
3 years ago
13

[x = 4y+7 |2x - 6y = 12 What are x and y

Mathematics
1 answer:
zlopas [31]3 years ago
8 0

x=3 and y = -1. ....thank uh.. ,

You might be interested in
Lines a and b are perpendicular. The equation of line a is y=1/3x+3. What is the equation of line b
kykrilka [37]
Perpendicular lines have slopes that are negative reciprocals to each other, that is, if one slope is a/b, the other is -b/a
in this case, the given slope is 1/3, so the other line's slope is -3/1, which is -3
from the graph we see that the y intercept of line b is -4, so the equation of line b is: y=-3x-4
6 0
3 years ago
Each leg of a 45°-45°-90° triangle measures 12 cm what is the hypoyenuse
lubasha [3.4K]
To find the hypotenuse in a 45-45-90 triangle multiply the legs by \sqrt{2}
So...
The leg is 12 the hypotenuse is 12\sqrt{12}
5 0
3 years ago
At the supermarket , 6 mangoes cost 6.12
Grace [21]

Answer:

good to know. but what's the question?

4 0
3 years ago
Read 2 more answers
A professor thinks that the students in her statistics class this term are less creative than most students at this university.
choli [55]

Answer:

It is not enough evidence to reject null hypothesis. It is not enough evidence to say that mean score is not equal to 35.

Step-by-step explanation:

\mu=35\\n=23\\\=x=33\\s=5\\\alpha=0.1

1. Null and alternative hypothesis

H_{0}:\mu=35\\H_{1}:\mu

2. Significance level

\alpha=0.1\\1-\alpha=0.99

Freedom degrees is given by:

v=n-1\\v=23-1=22

For a sgnificance level of 0,01 and 22 freedom degrees,  t-student distribution value is:

t_{0.01;23}=-2. 5083

3. Test statistic

t=\frac{\=x-\mu}{\frac{s}{\sqrt{n} } }

t=\frac{33-35}{\frac{5}{\sqrt{23} } }

t=-1,918

In this case, we have an one left tailed analysis, it means that null hypothesis is rejected if t

-1.918>-2.5083

Conclusion:

It is not enough evidence to reject null hypothesis. It is not enough evidence to say that mean score is not equal to 35.

3 0
3 years ago
Please work out and explain​
Mekhanik [1.2K]

Answer:

a = 22

b = 31

c = 13

Step-by-step explanation:

The sum is the same in each row, column, and diagonal.

One of the diagonals is already complete.  The sum is:

16 + 25 + 34 = 75

So the first row adds up to 75:

a + 37 + 16 = 75

a = 22

The second row adds up to 75:

19 + 25 + b = 75

b = 31

And the third row adds up to 75:

34 + c + 28 = 75

c = 13

We can check our answer by finding the sum of each column and the other diagonal.

22 + 19 + 34 = 75

37 + 25 + 13 = 75

16 + 31 + 28 = 75

22 + 25 + 28 = 75

3 0
3 years ago
Other questions:
  • Write an exponential function in the form y = a that goes through points ( 0 , 13 ) and ( 2 , 637 )
    15·1 answer
  • Find the height of the tree. FAST AS POSSIBLEEEE
    8·1 answer
  • How is 〖−3〗^4and 〖(−3)〗^4similar and different?
    14·1 answer
  • A 24 foot long bleacher stand has a
    12·1 answer
  • Help I need it plssssssssss
    8·2 answers
  • Help pls I will give brainliest! 6
    13·1 answer
  • (2)<br> 3. Which of the following is NOT equal to 3/4<br> a.<br> a: (0)<br> b. 123<br> c. oo
    11·2 answers
  • You have a choice to invest in one of three different college funds to save up for college. You need to save at least $14,000 fo
    12·1 answer
  • Please help :)
    12·1 answer
  • Harriet has £600.
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!