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
Elza [17]
3 years ago
12

X-4y=7 -6x-3y=12 how do i solve by substitution​

Mathematics
1 answer:
Dafna1 [17]3 years ago
3 0

Answer:

x = 15

y = 2

Step-by-step explanation:

X-4y=7 | ×6 |

-6x-3y=12 | ×1 |

6x - 24y = 42

-6x - 3y = 12

___________+

27y = 54

y = 54/27

y = 2

x - 4y = 7

x - 4(2) = 7

x - 8 = 7

x = 7 + 8

x = 15

You might be interested in
WILL GIVE BRAINLIEST
frez [133]

Answer:

She will make a profit of one dollar because the cost of operation and production is 203 dollars in total and selling 17 necklaces she will make 204 dollars

Edit: b) She will need to sell exactly seventeen necklaces

Step-by-step explanation: Hope this helps!

5 0
3 years ago
E The shadow of the moon during a solar eclipse travels 2300 miles in 1 hour. In the first 20 minutes, the shadow traveled $766\
Reika [66]

Answer:

c3po 1049596979ebsbsnwnanxbxjxo o ocjsbzbxbbxh h h.

8 0
2 years ago
In a singing contest, about 1/20 of the finalists came from Austin, Texas, and about 3/20 came from the state of Texas. What fra
Pie
It is d 1/3
That I saw the answer for your question
6 0
3 years ago
Helen draws three parallelograms. In each figure, she measures a pair of angles, as shown.
kakasveta [241]

Answer:

<em>D. In a parallelogram, opposite angles are congruent.</em>

Step-by-step explanation:

In each case, she measures two opposite angles, and they are congruent.

D. In a parallelogram, opposite angles are congruent.

6 0
3 years ago
Read 2 more answers
Ranking correct answer brainliest :)
MrRa [10]

Answer:

115

Step-by-step explanation:

angle DEF is an inscribed angle and arc DF is the arc it intercepts

if you didn't know an inscribed angle is equal to half the measure of the arc it intercepts

Hence angle DEF = 1/2 of arc DF

If arc DF = 230 then angle DEF = half of 230 or 230/2

230/2=115

Hence angle DEF = 115

8 0
2 years ago
Other questions:
  • What is 3,567,194 rounded
    13·1 answer
  • A sailboat’s sail has three sides that are all the same length. Each side measures x−10 units. The sail’s perimeter is 63 units.
    15·1 answer
  • GIVING BRAINLIEST what is 97 - 56 + 12
    12·2 answers
  • Help fast worth 10points
    15·1 answer
  • Ryan runs 3 miles in 28 minutes. at the same rate, how many miles would he run in 42 minutes?
    6·1 answer
  • 2.24 equal in real life
    13·1 answer
  • 2 pounds of grapes can make of a jar of grape jelly. How many
    8·1 answer
  • . What is the solution of the system of equations 3x + 2y = 4 and -2x + 2y = 24? *
    11·1 answer
  • Are these lines parallel or perpendicular? 2y=-3x=5 and y=3/2-6
    12·1 answer
  • Question 10 of 10
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!