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
uysha [10]
3 years ago
9

PLEASE HELP ASAP!! CORRECT ANSWER ONLY PLEASE!!

Mathematics
2 answers:
STALIN [3.7K]3 years ago
8 0
-9x + 4y = 55. –------------- (1)

-11x + 7y = 82. ---------------(2)

Multiply (1) with 7 and (2) with 4. we get

-63x + 28y = 385 ----------(3)
-44x + 28y = 328 ----------(4)

Subtract (4) from (3). you will get

-19x = 57
=> x = 57/(-19)
=> x = -3

Put value of x in (1)
-9×(-3) + 4y = 55

=> 27 + 4y = 55

=> 4y = 55 - 27

=> 4y = 28

=> y = 28/4 = 7

\boxed{ \textbf{\huge{x = -3, y = 7}}}
Katarina [22]3 years ago
5 0

(x, y) → (- 3, 7)

Using the method of elimination. That is manipulate the equations so that the coefficients of one of the variables are equal then add/subtract to eliminate it and solve for the other variable.

-9x + 4y = 55 → (1)

-11x + 7y = 82 → (2)

eliminating the terms in x

multiply equation (1) by 11

-99x+ 44y = 605 → (3)

multiply equation (2) by (- 9)

99x - 63y = - 738 → (4)

add (3) and (4) to eliminate x

- 19y = - 133

divide both sides by (- 19)

y = \frac{- 133}{- 19} = 7

substitute y = 7 into (1)

- 9x + 28 = 55

- 9x = 55 - 28 = 27

x = \frac{27}{- 9} = - 3

solution to system = (- 3, 7)


You might be interested in
Solve the Equation p+5/8=15/16?
Sphinxa [80]
So the first thing you want to do when faced with two fractions with different denominators (when subtracting or adding) is to make the denominators the same. So for this equation they would turn out to be p+10/16=15/16 (because 16 is the lowest common denominator, 8 times two) so then you want to subtract 10/16 from 15/16 to isolate the variable (p) which would get: 
p=5/16
This is the final answer because it cannot be simplified.
Hope this helps!
6 0
4 years ago
If f(x)=2x-1 And g(x) =3x which statement is true
alisha [4.7K]
I cant see any statements
6 0
3 years ago
Jasper has an annual salary of $71000 and his company pays him twice a month. What is the gross income per paycheck that Jasper
Sliva [168]

Answer:

$2,958.33

Step-by-step explanation:

Jasper's annual salary is $71000.

Considering that a year has 12 months and that he gets a paycheck twice each month, the total number of paychecks (P) Jasper gets each year is:

P = 12*2 = 24

To define Jasper's gross income per paycheck (I), simply divide his annual salary by the number of paychecks in a year:

I=\frac{\$ 71,000}{24} \\I=\$ 2,958.33

Jasper's gross income per paycheck is $2,958.33.

3 0
3 years ago
If ABC forms a linear pair with CBD, use the Linear Pair Postulate to determine the value of x
arsen [322]
There you go any questions?

7 0
3 years ago
Help me please. im failing
Inessa05 [86]

Answer:

Area = 31.5 units^2

Step-by-step explanation:

7 x 3 = 21

Area of triangle is (height x base) / 2

(3 x 7) / 2 = 10.5

21 + 10.5 = 31.5

5 0
3 years ago
Read 2 more answers
Other questions:
  • Great Gummies wants to see if their new candy is enjoyed more by high school or middle school students. They decide to visit one
    7·2 answers
  • Virginia bought 18 packs of envelopes for $2 each and 15 packs of thank you cards for $4 each . if she gives the cashier $100, h
    10·1 answer
  • Graph the function y = 8 –. Which is the best approximation of a point on the function? (4.4, 3.421) (4.6, 4.232) (5.2, 4.025) (
    8·1 answer
  • according to the law of conservation of energy, when a car uses 10,000J chemical energy from gasoline, how much energy will be t
    10·1 answer
  • Anna,Vickie, and Luanna are sisters. Anna is 3 years older thank Vickie, and Luanna is 2 years younger than Vickie. Use v for Vi
    12·1 answer
  • On a coordinate plane, a line goes through (0, negative 1) and (3, 1). A point is at (negative 3, 0).
    7·2 answers
  • I need to simply answer
    9·1 answer
  • 23 points!If the length of the pool is 14 1/2 feet,the width is 6 1/2, and the depth is 6 1/2 feet, what is the volume of the po
    7·2 answers
  • The diameter of a tire is 2.5 ft. Use this measurement to answer parts a and b. Show all work to receive full credit.
    7·1 answer
  • X^2-x-56=0 <br> How do you use the zero product property to solve this?
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!