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
liubo4ka [24]
2 years ago
5

10x + 7y = –8 7x + 7y = –14

Mathematics
1 answer:
Georgia [21]2 years ago
4 0

Answer:

(2, - 4 )

Step-by-step explanation:

Given the 2 equations

10x + 7y = - 8 → (1)

7x + 7y = - 14 → (2)

Subtract (2) from (1) term by term to eliminate y

(10x - 7x) + (7y - 7y) = - 8 - (- 14) , that is

3x = 6 ( divide both sides by 3 )

x = 2

Substitute x = 2 into either of the 2 equations and solve for y

Substituting into (1)

10(2) + 7y = - 8

20 + 7y = - 8 ( subtract 20 from both sides )

7y = - 28 ( divide both sides by 7 )

y = - 4

solution to the system of equations is (2, - 4 )

You might be interested in
If earth equals 120 pounds and Venus equals 109.2 pounds. Write a proportion relating the weights of earth=90pounds, what does.
Cerrena [4.2K]
I have no clue what this answer is but I hope you find it out
4 0
3 years ago
∠1 ​ and ∠2 are supplementary. ∠1=124°∠2=(2x+4)° Select from the drop down menu to correctly answer the question.
Alex_Xolod [135]
Remark
Supplementary angles add up to 180o. 

Givens
<1 = 124
<2 = 2x + 4

I imagine you are looking for either x or <2. 

Equation
<1 + <2 = 180          Substitute the givens
124 + 2x + 4 = 180  Collect like terms on the left.
128 + 2x = 180         Subtract 128 from both sides
2x = 180 - 128          Collect like terms on the right   
2x = 52                     divide by 2
x = 52/2
x = 26 <<<<<<<<< answer

<1 = 124
<2 = 2x + 4 = 2*26 + 4
<2 = 52 + 4
<2 = 56  <<<<<<<< answer

We need choices if you want an exact answer.

3 0
3 years ago
Please help with this, i tried to solve for x, and it didnt give me any of those answers
Firdavs [7]
I hope this helps you




4.1+4. (-x)+2x=3.x+3.1



4-4x+2x=3x+3


-2x-3x=3-4


-5x= -1


x=1/5
3 0
2 years ago
If two trucks leave a given city on highways making an angle of 132 degrees with one another, traveling at 45 and 55 miles per h
Law Incorporation [45]

Answer:

183 miles to the nearest mile.

Step-by-step explanation:

Distance =Speed X Time

Distance of Truck B from point A=45 X2 =90 miles

Distance of Truck C from point A=55 X2 =110 miles

Angles between them, BAC=132°

We want to find the Distance BC denoted by a between the trucks.

Using Cosine Rule,

a²=b²+c²-2bcCos A

=90²+110²-(2X90X110XCos132°)

=33448.79

a=√33448.79

BC=182.89 miles

The distance between the trucks is 183 miles to the nearest mile.

3 0
3 years ago
Read 2 more answers
If vs = 12 then ut = 12 18 24
evablogger [386]
Ut=12=vs 
hope this somewhat helps because i really don't understand what this means
4 0
3 years ago
Read 2 more answers
Other questions:
  • Each year Maria’s salary increases by the same amount of money. In her first year, Maria earned $27,000. In her seventh year, Ma
    14·1 answer
  • A construnction company charges $15 per hour for debris removal, plus a one-time fee for the use of a trash dumpster. The total
    14·2 answers
  • On a recent survey, 40% of those surveyed indicated that they preferred walking to running. If 540 people preferred walking, how
    7·1 answer
  • I need help with this equation 20 points help quick
    13·1 answer
  • Plz help me plzzzzzz 64=8c
    7·2 answers
  • Find the area of the shaded polygons:
    7·1 answer
  • I need help with geometry
    15·1 answer
  • IF SOLVED I WILL CORRECTLY ILL GIVE 5 STARS AND BRAINIEST Which of the following describes a correct method
    7·1 answer
  • What are the coordinates of the circumcenter of ABC
    12·1 answer
  • ANSWER THESE QUESTIONS FOR 70 POINTS I NEED THESE PLEASE
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!