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
devlian [24]
3 years ago
13

4x + 5y = 22 7x - 3y = -32

Mathematics
1 answer:
lana66690 [7]3 years ago
3 0

Answer:

x = -2

y = 6

Step-by-step explanation:

i multiplied the 1st equation by 3 and the 2nd by 5 to get the y-terms to zero out

   12x + 15y = 66

+  <u>35x - 15y = -160</u>

   47x = -94

x = -94/47

x = -2

substitute -2 for 'x' to solve for 'y':

4(-2) + 5y = 22

-8 + 5y = 22

5y = 30

y = 6

   

You might be interested in
A bag of oranges weighs 5 1/4 pounds. how much do (1 &amp; 1/2) bags weigh
siniylev [52]
One bag is 5 1/4 pounds so you need to multiply that by 1 1/2 or 3/2 as an improper fraction

21/4 x 3/2 =63/8   change that to a proper fraction to get 7 7/8 lbs
5 0
3 years ago
Read 2 more answers
Describe how the graph of y = 2x is the same and different from the graph of y = 2x - 7 explain or show your reasoning
Bas_tet [7]

Answer:

They are the same because they have the same slope but are different because they have different y intercepts.

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
A lie-detector works correctly with 80% probability when the person is lying, and with 90% probability when the person is not. A
muminat

Answer:

the time percentage is 17%

Step-by-step explanation:

The computation of the time percenatge in the case when the detector lie and done with the mistake is as follows:

L denotes the event  in which a person is lying.

NL denotes the event in which a person is not lying.

C denotes the event in which that lie detector works correctly

NC denotes the event in which  lie detector is not working correctly

Now

P(C|L) =0.8

And,

P(NC|L) is

=1 - .8

= 0.2

P(C|NL) =0.9

P(NC|NL) is

= 1 -.9

=.1

P(L) = 0.7

P(NL) is

= 1 - .7

= .3

Now

P(NC) =P(NC|L) × P(L) + P(NC|NL) × P(NL)

=. 2 × .7 + .1 ×.3

=. 14+.03

= 0.17

Hence, the time percentage is 17%

8 0
3 years ago
Gabrielle's age is two times Mikhail's age. The sum of of their age is 66. What is Milkhail's age?
stealth61 [152]
Wouldn't mikhail be 22?

if mikhail's age = 22 and gabrielle is twice that then gabrielle = 44

22
+44
_____
66
7 0
3 years ago
What are the coordinates for (6,5) and hypotenuse 3.
galina1969 [7]

Answer:

the distance formula is used to find the distance between two points in the plane. The Pythagorean Theorem, a2+b2=c2 a 2 + b 2 = c 2 , is based on a right triangle where a and b are the lengths of the legs adjacent to the right angle, and c is the length of the hypotenuse.

Step-by-step explanation:

4 0
3 years ago
Other questions:
  • Writing equation in slope intercept form
    12·1 answer
  • 3. Convert 0.000072 to scientific notation.
    12·1 answer
  • Round to the nearest tenth 43
    13·2 answers
  • The numbers of birds Jim spots on different days during a
    15·2 answers
  • Given that angle 1 is a complement of angle 2 and that m angle 2 = 8 degrees , find m angle 1 . A.72° B.82° C.100° D.172°
    12·1 answer
  • Hey please help if u can!
    14·2 answers
  • Find the 73rd of the sequence -1, 5, 11,...
    8·1 answer
  • The cost of 7 chairs is equal to the cost of 2 tables. If the cost of 6 chairs and 5 tables is Rs.10,575, find the cost of 12 ch
    10·1 answer
  • Please help me!! i have no clue what i am doing on this one.
    11·2 answers
  • What’s 9+10. V. B B B B.
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!